Deep Cycle Batteries and Battery Chargers


BATTERY CHARGERS

A battery charger converts AC power from the generator or from the power company into low voltage DC to charge a battery. The ability to charge batteries from these sources during poor solar weather avoids battery damage from extended periods of severe discharge.

Some small AC generators have a built-in DC battery charge feature of only 3 to 10 amps. To be effective, one or more 30 to 100 ampere battery chargers should be connected to your AC generator and can charge while the generator runs a washing machine or well pump, making the best use of costly generator time. 

 GENERATOR REQUIRED: Battery chargers need a full sine wave 120 volts AC to give their rated amount of charge. Most under $2500 also have low peak voltage causing many chargers to give only a fraction of their claimed charge rate. This may be cured with our 10% voltage boost transformer. Some generators can be adjusted for slightly higher speed to maintain 120 volts to compensate. Allow minimum generator size of 1 KW (1 kilowatt) per 30-amp 12-volt charger.  Beware low cost 120/240 volt generators with only half rated wattage on each 120 volt circuit. Trace inverter-chargers that are not true sine wave need a 6 KW or larger generator. EXCEPTION: We recommend Electronic Inverter-based variable speed generators like the Honda EM5000i or the EU3000 and Yamaha 2800I which operate battery chargers up to 100 amperes/ 12 volts (50 amperes/24 volts) at full charge rate. Also see the GEN-TEST volt & frequency meter for generators. 

CHARGER SIZE & TYPE: Compatibility of generator and charger can be a big problem. Battery chargers of 30 to 150 amperes built into True Sinewave  "standby" inverter-chargers, and the separate electronic battery chargers below work well with nearly any generator. The Electronic Inverter-based generators, described above work well with nearly any charger. 

Maximum charger amps should be about 10% of the battery amp hour rating. Charging too fast can damage batteries. A 440 amp hour battery works well with a 40 ampere charger. Charge rate should taper to a much lower rate as the battery becomes fully charged. Several chargers can be used together to increase charge rate and reduce charge time, if the battery size and rating of the generator allow. NOTE: Many automotive chargers list a high "boost" 200 amp or higher short term engine start surge, but this setting CANNOT function for charging home power batteries.   For more, see The Battery Book.


TRUECHARGE 2 ELECTRONIC 12 volt BATTERY CHARGER
by XANTREX

BEST CHARGER working from generator power source.

Microprocessor controlled, 40 amp continuous duty, multi-stage battery charger (12 volt only)

2.8" high x 6.7" wide x 9.8" long
Weight 4.8 pounds

90-265 Vac 47-63Hz

TRUECHARGE 2 is a high reliability 40 amp electronic battery charger for deep cycle batteries. Switch settings give correct charge for wet, gel cell, absorbed glass mat or lead-calcium batteries. Selectable 2 or 3 stage charging where 3 stage includes float charge. Manual equalize charge button. Manual or automatic temperature compensation. Optional temperature sensing probe to correct charge voltage for actual battery temperature.

Flooded Bulk voltage setting: 14.4; Equalize voltage: 16.0

External 60 amp fuse or circuit breaker required. AC plug not included and must be purchased locally if you want to plug into an outlet.

Certified for ignition protection and FCC15B radio interference.

This charger has full 40 amp output even with low cost generators, an important quality if your generator cost under $2500.  Backwoods comparison tested all our battery chargers with several generators. Most chargers performed as promised with the big Kohler 10 kilowatt generator, but most gave less than half the charge with the Honda 3500 generator. Those that delivered full rated power even with the smaller generator were true sine wave inverter-chargers and this TrueCharge 2. As with all battery chargers, as battery voltage increases it is not unusual to witness a decrease in charging current. Two year warranty.

Item Code/Description Additional
Shipping
Price Buy Now

BC-TRUECHARGE 2

$14 $360

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BC-Truecharge 2 Temp Sensor: 32' temperature sensing probe corrects charge voltage

  $40

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BC- Truecharge 2 Remote: remote control panel with 20' of comm cable

  $86

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IOTA 12 VOLT 55 AMP and 24 VOLT 25 and 40 AMP CHARGER

Iota Engineering uses advanced switch mode technology in the production of this highly sophisticated electronic battery charger. The DLS series converter efficiently charges batteries with its full rated output. It then maintains the batteries by only putting into the battery bank what is required to maintain the selected voltage set point. Short circuit, overload, and thermally protected. These chargers do not have a float feature.

Historically, low and transient AC line voltage was a major cause of battery charge failure. The DLS series is protected against low line voltage as well as spikes coming from your AC power source. It also meets FCC criteria for minimizing radio and television equipment interference.

TWO year warranty

Model DLS5512 is a 740 watt power supply. It can deliver a 55 amp maximum charge at 12 volts, fully automatic. Backwoods maximizes the voltage set points at either 14.8 or 15.4 volts (we can lower these set points if your system requires lower settings). These set points are user selectable via simple plug-in jack.  As with all battery chargers, as battery voltage increases it is not unusual to witness a decrease in charging current.
 

Model DLS2524 is a 675 watt power supply. It can deliver a 25 amp maximum charge at 24 volts (equal to a 50 amp/12 volt charger). Fully automatic.  Backwoods maximizes the voltage set points at either 29.2 or 30.4. These set points are user selectable via a simple plug-in jack.  As with all battery chargers, as battery voltage increases it is not unusual to witness a decrease in charging current.

Model DLS4024 is a 1100 watt power supply. It can deliver a 40 amp maximum charge at 24 volts (equal to a 80 amp/12 volt charger). Fully automatic.  Backwoods maximizes the voltage set points at either 29.2 or 30.4. These set points are user selectable via a simple plug-in jack.  As with all battery chargers, as battery voltage increases it is not unusual to witness a decrease in charging current. 120v 20 amp outlet required for this charger. This outlet will have one vertical and one horizontal spade receptacle as well as the standard ground prong receptacle.

7 x 6.5 x 3.5 inches. Weight 5.5 pounds.

Item Code/Description Additional
Shipping
Price Buy Now

BC-IOTA 5512

$17 $208

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BC-IOTA 2524

$17 $250

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BC-IOTA 4024...120v 20 amp outlet required

$17 $395

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BATTERIES

BATTERY CARE is your main responsibility with home made electricity. This is the one part of your power system likely to be harmed by neglect or misuse. Lead-acid batteries, the standard in home energy, should not discharge more than 50%. Ideally, they should be recharged to 100% promptly. They can be damaged by undercharging, continued overcharging, or contamination. Do not store batteries without periodic recharging. Continual self discharge when not in use can ruin even a brand new set of batteries.  The Battery Book (E-BATTERY, $10) is an easy guide to getting the most life from batteries.

Sizing of 1000 to 2000 amp-hour 12 volt (or 1/2 that in 24 volt; 1/4 that in 48 volt) battery bank is desirable because a larger bank can accept faster charging by generator and give high power discharge for inverter surge without strain. In northern areas short on winter sunshine, more reserve before running down to the 50% level is also a benefit. Use our catalog's 6 introductory examples as a guide to battery size, or call for advice. In sunny southwest, less battery capacity is needed. 

DEEP CYCLE lead acid batteries have thicker plates and lead-antimony support grids for years of over 50% deep cycle charge and discharge. Golf cart batteries and the "L-16" industrial batteries are the most common. Surplus industrial batteries may be deep cycle lead-antimony, or pure lead, or may be shallow cycle lead calcium construction.

Auto batteries are shallow cycle only. Cat, automobile, and truck batteries are NOT deep cycle and will not last long in home power systems. These have thinner plates and lead-calcium grids designed for less than 20% discharge and immediate recharge. If an industrial lead-calcium battery is well oversized so that normal cycling uses only the top 20% of battery capacity, lead calcium cells can be used. 

RV/MARINE  This common 12 volt battery is designed about half way between a deep cycle and a shallow cycle, and has medium length of life.

SEALED BATTERIES  Gel or AGM (absorbed glass mat) types damage easily from overcharge, and so should be used with a 3 stage charge control. Sealed batteries can be excellent deep cycle alternative energy batteries, cleaner and safer, but only if charging is precisely controlled. Since water cannot be replaced and hydrometer testing is not possible, they are considered special purpose batteries. 

NICKEL CADMIUM (ALKALINE) BATTERIES: Unlike lead, deep discharge and failure to recharge do not shorten battery life. However, surplus batteries are often overpriced and defective. Cost is much higher than lead acid. Voltage swings higher when charging and lower when using. Charge efficiency (energy charged in versus energy returned to you) is very low. Disposal and recycling can be difficult and costly. Be cautious of buying used alkaline batteries.


Backwoods Solar Stocks TROJAN BATTERIES

In our opinion, the best deep cycle battery in this class available for our off-grid systems!

TROJAN T-105 always in stock to pick up at Backwoods Solar.
TROJAN L-16 RE and L-16 2v orders to pick up here should call at least a week ahead.

FREE PICK UP in OTHER AREAS:  Batteries ordered from this website can be picked up at Trojan dealers in much of the U.S. Usually with no shipping charges or tax. Call for arrangements. Shipping wet batteries is rarely necessary. 

TROJAN T-105 BATTERIES
NEW 225 AMP-HOUR RATING

Electric Vehicle or Golf Cart Batteries are easier to lift at 65 pounds each, size 10" x 7" x 11". These are a popular and economical battery for home power systems. This mass produced consumer battery has the best price per amp-hour of any quality battery.

Each battery is 6 volts, made of three 2-volt cells in one unit. Six-volt batteries are series connected in pairs for 12 volts, or in strings of four batteries for 24 volts, or 8 to make 48 volts. Then several of these series strings may be parallel connected to add more ampere-hour capacity. Each series string is rated 225 ampere hours, so two strings are 450 Ampere-Hours, 3 are 675 A.H., 4 are 900 A.H., 5 are 1125 A.H., etc. Interconnect diagrams are supplied. Life expectancy is 4 to 6 years. 12 month warranty. 

FREE ACCESSORIES included with Trojan batteries are the Battery Book, and a plastic hydrometer. Distant customers call for pick-up locations near you, usually at no shipping cost.

Item Code/Description Additional
Shipping
Price Buy Now

B-T105: Trojan T-105 (one year warranty) Batteries & accessories

CALL $168 Ea

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B-T105-RE: This "RE" model has a 2 year full warranty, plus 3 more years prorated. 65 lbs; 10 3/8" x 7 1/8" x 11 3/4" tall; 6v 225 ah
Trojan T-105-RE Batteries & accessories

CALL $189 Ea

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Order your choice of battery interconnect cables.

Due to the global lead market, battery prices may differ throughout the country and prices are subject to change without notice!

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TROJAN L-16 RE-B and L-16 2 volt High Capacity BATTERIES
NEW CAPACITY RATINGs-- NOW 370 AMP-HOURS for the RE and 1110 AMP-HOURS for the 2 volt.

 Trojan offers a free replacement warranty for the first two years of service and an additional five year, pro-rated warranty on the L16RE-B and L16 2 volt batteries for renewable energy systems (assuming Trojan defined, proper care)!!

Trojan L-16RE-B is a 370 amp hour industrial size 6 volt battery weighing 118 pounds. The L16 2 volt is a 1110 amp hour industrial size 2 volt battery weighing 118 pounds as well. Lifting handles are included. They are 30% taller than auto or golf cart batteries, 12" x 7" x 18 inches tall, so they take less floor space for a given battery capacity. Typical life is 8 - 11 years. L16 RE-B and 2 volt are High Capacity models in a red ribbed case with two handles, Trojan's best: Not the industry "standard" L-16 model which has less capacity and less longevity. Both Trojans have a reputation of reliability in home power systems.  2 year full warranty plus 5 more years prorated warranty on the L16 RE-B and 2 volt.

The L16 RE-B battery is 6 volts, made of three 2-volt cells wired in series in one unit. Six-volt batteries are series connected in pairs for 12 volts, or in strings of four batteries for 24 volts or 8 to make 48 volts. Then several series strings may be parallel connected to add more ampere-hour capacity. Interconnect diagrams are supplied. Each 12 or 24 volt series string of L16 RE-B is rated 370 Ampere Hours, so two strings are 740 Ampere-Hours, 3 are 1110 A. H.... etc.

The L16 2 volt battery is 2 volts, made of three 2-volt cells wired in parallel in one unit.  2 volt batteries are series connected in groups of six for 12 volts, or in groups of twelve batteries for 24 volts or twenty four to make 48 volts. Then several series strings may be parallel connected to add more ampere-hour capacity. Interconnect diagrams are supplied. Each 12 or 24 volt series string of L16 2 volt is rated 1110 Ampere Hours, so two strings are 2220 Ampere-Hours, 3 are 3330 A. H.... etc.

FREE ACCESSORIES included with batteries: the Battery Book, and a Hyrdrometer2  plastic hydrometer. Distant customers call for pick-up locations near you, usually at no shipping cost.

B- L16RE-B: Trojan L-16RE 6 VOLT; 370 ah batteries & accessories EACH:  $394

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B- L16 2 VOLT: Trojan L-16 2 VOLT; 1110 ah batteries & accessories EACH:  $380

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Call at least 1 week ahead to pickup L-16HC batteries at Backwoods.

TROJAN INDUSTRIAL BATTERIES

4V Battery                    6V Battery

Trojan’s Industrial line of batteries is comprised of removable 2-volt cells bundled in a secondary containment case to form single, high-capacity 4-volt and 6-volt battery solutions. Components of the individual cells are assembled in a rugged polypropylene housing designed to protect the internal plates from potential damage that may be caused during transport and installation.
The removable 2-volt cells are easier to maintain and replace while the combined insulation of the dual container construction provides added protection against extreme temperatures. Trojan designed its Industrial line of batteries with stability in mind. Molded into the case design are dual handles that enable easy movement during transport and installation.

MODEL VOLTS Ah-
20 Hr
L W H LBS Buy Now
B-IND23-4V 4 1233 23.375 10.25 24 370 $1,105
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B-IND29-4V 4 1570 26.6875 10.25 24 465 $1,335
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B-IND13-6V 6 673 23.375 10.25 24 315 $1,040
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B-IND17-6V 6 897 26.6875 10.25 24 415 $1,175
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Order your choice of battery interconnect cables.

Due to the global lead market, battery prices may differ throughout the country and prices are subject to change without notice!

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SOLAR-ONE BATTERIES WITH HuP TECHNOLOGY

HuP® (High Utilization Positive) was created in response to another need. Patented in 1982, its original objective was to meet tough new environmental standards, and help eliminate lead dust from the battery manufacturing plant. But it was discovered during initial
testing that HuP® also exhibited cycling capabilities well in excess of conventional batteries.
The next step in the evolution process was into Renewable Energy service where the Solar-One® battery with HuP® technology has been powering off grid homes for over 13 years while being charged from clean Energy produced by Solar Modules that turn sunlight in to electricity, Wind machines that tap a valuable resource or Micro Hydro generators that convert falling water into usable energy.
Along with outstanding support you also receive an installation and maintenance manual written for Renewable Energy users by Renewable Energy users. You also receive the manufacturers written warranty. No other battery in the Renewable Energy industry offers the technology, quality, warranty, support, and value of the Solar-One®.
The Solar-One® warranty is a full ten year manufacturers warranty and is very simple. If the battery fails to deliver 80% of it’s capacity in the first year, any defective cells will be replaced by EnerSys including the shipping costs. For the next 6 years any defective
cells will be replaced by EnerSys, but the consumer will pay the shipping costs. The last 3 years of the warranty you will be offered a substantial discount on the purchase of a new Solar-One® battery of equal or greater value. All batteries ship truck freight.

FULL LINE OF SOLARONE BATTERIES AVAILABLE

Item# Description Buy Now
B-HP6-85-17-12 HuP Solar One 12V, 845Ah Battery $2,995
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B-HP6-85-21-12 HuP Solar One 12V, 1055Ah Battery $3,490
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B-HP6-85-33-12 HuP Solar One 12V, 1690Ah Battery $5,245
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B-HP6-85-17-24 HuP Solar One 24V, 845Ah Battery $5,990
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B-HP6-85-21-24 HuP Solar One 24V, 1055Ah Battery $6,980
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B-HP6-85-33-24 HuP Solar One 24V, 1690Ah Battery $10,490
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B-HP6-85-17-48 HuP Solar One 48V, 845Ah Battery $11,980
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B-HP6-85-21-48 HuP Solar One 48V, 1055Ah Battery $13,960
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B-HP6-85-33-48 HuP Solar One 48V, 1690Ah Battery $20,980
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SURRETTE HEAVY DUTY INDUSTRIAL BATTERIES


This new generation, deep cycle, flooded lead acid battery offers high capacity and heavy duty plate grids which resist positive plate breakdown. The plates are double insulated with glass mat and polyethelyne envelope, eliminating the possibility of separator misalignment, cracked separators, and shorting.

Each 2 volt cell is built into its own lightweight container made of durable polypropylene. The cells are then assembled into a tough outer container with a removable lid. Even if this outer container cracked, acid spills are prevented and the battery still operates. The individual cells are bolted together allowing the battery to be disassembled and the cells individually removed for easy on-site installation. Free battery book and Hydrometer included with each purchase.

Rated at 3200 Cycles at a 50% Depth of Discharge. B-S models have a 2 year free replacement, 7 year pro-rated. KS, CS & YS Models 10 year warranty: three years full warranty; and then seven years pro-rated warranty.

Model

Volts

Amp-
 H
rs

Length

Width

Height

Lbs

Price

Buy Now
B-S1380
(does not come
with cables)
2 1050 13.13 7.13 16.75 115 $378 Add this item to the shopping cart
B-S530
(does not come
with cables)
6 400 12.5 7.13 16.75 117 $374 Add this item to the shopping cart

 B-2-KS-33PS

2

 1766

 13.75

 8.32

 24.82

 208

 $915

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 B-2-YS-31PS

2

2430

15.5

9.25

31.63

286

 $1275

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 B-4-KS-21PS

4

 1104

 15.75

 9.38

 24.75

 267

 $1145

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 B-4-KS-25PS

4

 1350

 15.75

 10.63

 24.75

 315

 $1432

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 B-6-CS-21PS

6

 683

 22.00

 8.25

 18.25

 271

 $1115

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B-6-CS-25PS 6 820 22.25 8.25 18.25 318 $1285 Add this item to the shopping cart

 B-8-CS-17PS

8

546

 28.25

8.25

 18.25

294

 $1235

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 B-8-CS-25PS

8

 820

 28.25

 11.25

 18.25

 424

 $1700

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FREIGHT to be determined. Call for a freight quote.  Please allow 4-6 weeks for delivery. 2/0 Battery interconnect cables included for all but the B-S1380 & B-S530 with each order!! If heavier gauge is needed, please specify beforehand so that we can quote pricing.

Due to the global lead market, battery prices may differ throughout the country and prices are subject to change without notice!


DEKA L-16 FLOODED BATTERY

One of the highest performing L-16 flooded batteries on the market. They have flag terminals and a heavy duty plastic case. All MK batteries are made in the USA. Due to the fact that MK has their own recycling process, lead smelter, and beginning to end manufacturing process their prices are much more reasonable and steady. We are a direct distributor of all MK batteries, including the popular Unigy high capacity line. VERY reasonable freight quotes available on any quantity.
 

Data Sheet Available Here
 

Model Volts Amp-
 H
rs
Length Width Height Lbs Price Buy Now
B-DK-L16LTP 6 370 11.75 7. 17.3 113 $335 Add this item to the shopping cart

 


CONCORDE ABSORBED GLASS MAT 
SEALED BATTERIES

Completely sealed valve regulated Absorbed Glass Mat (AGM) battery. Non-spillable and maintenance free, never requires watering. No gas, it is all recombined within the battery. Exterior stays clean and safe. AGM has no problems like gel batteries separating from plates. Can be transported safely by air or any other means, and is exempted from DOT hazardous material category. No UN labels required for international air shipping. Recyclable anywhere that processes automobile batteries. See a report on these in Home Power Magazine issue 75 page 88. Sealed batteries require 3 stage charge control set exactly to manufacturer's instruction, and NO equalize charging. 12 month warranty after install, or 18 months from date of purchase. Order interconnect cables separately. Expected life is 5 years at 30% depth of discharge.

Item Code/Description Additional
Shipping
Price Buy Now

B-2580L: 12 volt,  21" x 11" x 10"; 162 lbs; 255Ah

FREIGHT $742

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B-2120L: 12 volt,  21" x 9" x 10.5" 135 lbs; 210Ah

FREIGHT $622

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B-1080: 12 volt, 12.9" x 6.75" x 8.96"; 70 lbs; 108Ah $50 for a single $339 Add this item to the shopping cart
B-890: 12 volt, 12.9" x 6.75" x 8.96"; 62 lbs; 89Ah $50 for a single $308 Add this item to the shopping cart

B-2240: 6 volt,  10.5" x 7" x 11"; 68 lbs; 220Ah

$50 ea $346

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B-4050HT: 6 volt, 11.64" x 6.95" x 15.73"; 120 lbs; 405Ah FREIGHT $663 Add this item to the shopping cart
B-9150: 2 volt, 10.28" x 7.06" x 13"; 94 lbs; 915 Ah FREIGHT $464 Add this item to the shopping cart

Call for truck freight shipping on batteries where no shipping is listed.

Due to the global lead market, battery prices may differ throughout the country and prices are subject to change without notice!

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DEKA GEL & AGM BATTERIES

The Deka Solar series of batteries is designed to offer
reliable, maintenance-free back-up power for grid-tied
backup or remote access renewable energy applications
where minimum maintenance is desirable. Deka gel and
AGM batteries are the industry standard in grid-tied backup power, with reliable performance. The quality of their products is recognized worldwide and has met the global requirements of ISO 9001 and ISO/TS 16949 certification standards. Deka is also a leader in innovative recycling and has met global environmental requirements of ISO 14001 certification standards. Deka makes recycling your battery convenient with a network of factory warehouses located throughout the United States and Canada that will return your battery for proper recycling. 2 year full replacement on monobloc GEL and 1 year on monobloc AGM batteries.

We are a direct distributor for MK Battery, please call if you are interested in the Unigy & Unigy II product line or any battery not listed here.

 All batteries ship truck freight, or may be available for pick-up in limited locations. Free shipping on orders over $2500 to a commercial address with dock.

Item Code Description Price Buy Now
B-DK-8G30H GEL; 12 volt, 12.94” x 6.75” x 9.75”; 70 lbs; 97.6 Ah $279 Add this item to the shopping cart
B-DK-8G4DLTP GEL; 12 volt, 20.75” x 8.5” x 10”; 127 lbs; 183 Ah $569 Add this item to the shopping cart
B-DK-8G8DLTP GEL; 12 volt, 20.75” x 11” x 10”; 157 lbs; 225 Ah $693 Add this item to the shopping cart
B-DK-8GGC2 GEL; 6 volt, 10.25” x 7.13” x 10.88”; 69 lbs; 180 Ah $305 Add this item to the shopping cart
B-DK-8A27 AGM; 12 volt, 12.75” x 6.75” x 9.88”; 63 lbs; 92 AH $235 Add this item to the shopping cart
B-DK-8A4DLTP AGM; 12 volt, 20.75” x 8.5” x 10”; 129 lbs; 198Ah $523 Add this item to the shopping cart
B-DK-8A8DLTP AGM; 12 volt, 20.75” x 11” x 10”; 161 lbs; 245Ah $619 Add this item to the shopping cart
B-DK-8AGC2 AGM; 6 volt, 10.25” x 7.13” x 10.88”; 68 lbs; 190 Ah $267 Add this item to the shopping cart

 


BATTERY ACCESSORIES

HYDROMETER is the lowest price, most direct and reliable indicator of battery state of charge. We give one free with each battery purchase. Includes battery record sheet and instructions.

 

 

 

0-HYDROMETER 1: (pictured on left) Basic model: free with battery purchase  $20 

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0-HYDROMETER 2: (pictured on right) our most accurate. 1.100 to 1.325 in 0.05 increments and now temperature compensated!! $56

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BATTERY LIFE SAVER DE-SULFATOR

Three year warranty (only one per battery bank!) This pulse style conditioner delivers a square wave frequency signal to each crystal of lead sulfate causing it to convert back
into lead and sulfuric acid thus dissolving the crystal! The end result: Extended Battery Life! Use only on batteries that are severely depleted and beyond their warranty period. 4.5 x 2.25 x2.0 11.4 oz

Tom Kingsland, a Backwoods employee, tested this device on his 6 year old Trojan T-105 battery bank and witnessed impressive results. Please call and ask Tom to discuss his test results.

Simple installation with two battery clips: one for your Battery (+) and one for the Battery (-). The reverse polarity protected, potted electronics are set on an anodized aluminum heat sink.
4.5" wide x 2.25" deep x 2.0" high.  11.4 ounces  

B-BLS12 for 12v systems draws 250 ma maximum: duty cycle 50%:  $98

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B-BLS24 for 24v systems draws 250 ma maximum: duty cycle 50%:  $98 

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B-BLS48 for 48v systems draws 500 ma maximum: duty cycle 50%:  $98 

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WATER MISER BATTERY CAP

The Water Miser Battery Cap is designed to reduce battery maintenance by decreasing the frequency with which distilled water needs to be added to each cell and also alleviates some of the minute electrolyte mist which can settle atop a battery. Each cap has condensing pellets within its flip top lid which capture and return electrolyte droplets into each cell as battery charging takes place. This process does NOT eliminate the need to add distilled water!

Each battery cell needs one Water Miser Cap which will replace the original cell's cap.

B-WATER MISER CAP:  $6 per cap

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BATTERY LUGS fits on 5/16 battery bolt or 3/8 meter shunt bolt. Allen screws clamp one or two wires up to 2/0 size, or many smaller wires down to 14 gauge. With allen wrench.
 


O-AU 4/0 Single Lug: $7 Add this item to the shopping cart

0 - AU 2/0 Dual Lug:  $4

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BATTERY TERMINAL COATING Keeps vapors, atomized battery acid, and air off battery terminals, bolts, and wire ends. 3 ounce bottle with applicator does all your battery bank and auto batteries too.
 

O-BAT COAT:  $12

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BATTERY INTERCONNECT CABLES


To connect individual batteries together. Total load divides equally among battery strings in parallel so 2 gauge may be adequate within each series string. Heavier 2/0 is for connections between ends of series strings. Heaviest 4/0 Shunt Cable connects battery negative to meter shunt, or for longer cable between shelves or rows of batteries.  Eyelet lugs on both ends as pictured. Eyelet lug on each end as pictured. For larger gauge10 foot cables, see inverter battery cables.

O-BIC-2: 2 gauge copper, 15" with 5/16" holes, for Trojan batteries:  $10

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O-BIC-2/0: 2/0 heavier gauge copper, 16" with 3/8" bolt holes:  $15

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O-SHUNT CABLE 2/0:  2/0  copper, 24" with 3/8" bolt holes:  $19

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O-SHUNT CABLE 4/0:  4/0  copper, 24" with 3/8 bolt holes:  $26

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O-SHUNT CABLE 4/0:  4/0  copper, 36" with 3/8 bolt holes:  $36

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SHIPPING ON BATTERY CABLES TO BE DETERMINED

Minimum shipping $12 per whole order covers all items with no shipping listed

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BATTERY BOX VENT FAN

Ready made 12, 24, or 48 volt fan in pipe sections with back draft damper for easy  installation in your battery vent pipe. The automatic switch below will control a 12 or 24 volt fan. 12 and 24 volt models go in 2 inch PVC pipe. The 48 volt model has a 2 inch inlet and a 3 inch outlet pipe socket.

2 year warranty.


 

O-PWRVENT 12 volt:  $74

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O-PWRVENT 24 volt:  $74

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O-PWRVENT 48 volt:  $98

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AUTOMATIC CONTROL FOR 12 or 24 VOLT BATTERY FAN

Voltage controlled automatic switch runs DC vent fan when battery is at or above gassing voltage (14.0 and 28.0 volts). Holds fan on for 30 minutes after voltage drops these levels, then shuts down. Green LED shows when fan is operating. Draws no current when off; 125 ma when on. 50 amp capability. RED LED for over temp or low battery voltage.  Fan not included. Same control for 12 or 24V. Not Adjustable. Limited lifetime warranty.

O-VENTCONTROL: 12/24V:  $84

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LOW COST BATTERY VENT BRUSHLESS FAN

4-5/8" square brushless motors use little power. Can be
installed on battery box or in vent pipe. Auxiliary relay option
for Outback inverters can start and stop these based on battery
voltage, or connect to the 12 volt control shown above for
any 12 v system. Rated 40 to 90 cfm. Power draw varies with
model & voltage: usually 4 - 9 watts.

A-MUFFAN 12:  $15 Add this item to the shopping cart
A-MUFFAN 24:  $15 Add this item to the shopping cart
A-MUFFAN 48: $15 Add this item to the shopping cart
A-FANGUARD: Screw-on guard to protect from fan blades $3 Add this item to the shopping cart


BATTERY BOOK FOR YOUR PV HOME   by New England Solar

This booklet covers lead acid batteries like Trojan T-105 or L-16HC. Interconnecting, care and testing, hydrometers, voltage readings, and battery equalizing explained. We give this book free with each battery sale. 22 pages, 8˝ x 11"

E-BATTERY:  $10 Add this item to the shopping cart

Minimum shipping $12 per whole order covers all items with no shipping listed

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Hours: Mon. thru Fri.
8 to 5 Pacific Time.
Visiting Hours: M-F 1:00-4:00 PM  
Phone: 208-263-4290
24 Hr. Fax: 208-265-4788
Email: info@backwoodssolar.com
Backwoods Solar Electric Systems
1589 Rapid Lightning Creek Rd
Sandpoint, Idaho 83864 USA