Charge Controls and Accessories


POWER ROOM EQUIPMENT

IN THE POWER ROOM, electricity from the solar array first passes through a charge controller, then through a fuse or circuit breaker disconnect device to the battery. From the battery, power goes through fuses or circuit breakers to any DC circuits in the house, and also goes through a large main fuse or breaker to the inverter/charger for producing 120 volts AC. Meters show power coming in from solar, wind or hydro, show battery condition and show how much power is being used in the house. This equipment mounts on the wall of a utility room, near the battery. The installer wires everything together into a functioning power system, in one of three ways.

COMPONENTS: In smaller power systems for cabins and recreational vehicles like examples #1 & #2, components are few and may be assembled individually by the installer. Solar charge control and inverter each connect to the batteries through their own cables with appropriate fuse in each cable.  Charge controls are explained and listed following the powercenters shown below. See Fuses and Hardware, and Meters for more information to round out these systems.

POWERCENTER Kit: A single box contains all DC circuit breakers, fuses, shunts and easy connection points for the cables from solar modules, battery, hydro or windmill, DC loads, remote meters and the inverter. The charge control and inverter often attach directly to the powercenter box, forming a single integrated unit. This saves having to find, buy, and assemble all the hardware separately. You get a simplified standard design which saves labor and time installing. The result is a safe, clean looking battery room. Powercenter components are UL approved, meet National Electric Code and are the simplest way to pass an electrical inspection. 

INTEGRATED POWER SYSTEM: Easiest of all, choose the fully integrated Outback FLEXWARE 500 power system. This ships as one unit, pre-assembled on a single mounting plate. Included are all matched components including a charge controller and 2,000 to 7,200 watt inverter combinations. You just connect your solar array, batteries, generator and house wiring.

CHARGE CONTROLS 
AS SEPARATE COMPONENTS


HOW TO SELECT A CHARGE CONTROL
Charge controllers regulate the output of solar modules, wind generators and hydroelectric generators to prevent overcharging of the battery. When battery voltage rises to a preset maximum, where the battery is completely charged, the control automatically reduces or stops the solar charge. Some charge controllers are that simple, but most include some other features like volt & amp meters, voltage conversion, low battery load disconnect or night light timer.
TRADING - UP
If you outgrow the capacity of a smaller charge control, you can trade it in for a larger
control at Backwoods, if it was originally purchased from us within a reasonable amount of time.
VOLT AND AMPERE RATING OF THE CONTROL
Select a control able to handle a little more than the amperes your solar modules are
rated to generate. Though solar modules don’t usually produce more than their rated
amperes, they can momentarily produce 15% more on cold bright days. The electric code
recommends leaving a 25% margin, that is, for a 47 amp solar array use a 60 amp control
rather than a 50 amp control. And if you plan future expansion of your solar array, allow a lot more headroom to accommodate the added panels. Be sure the model you choose is designed for your battery voltage: 12, 24 or 48 volts. A given control will handle twice as many solar modules watts in a 24 volt system as in a 12 volt. Maximum power point tracking “Boost” and voltage converting controllers are rated for the boosted output to the battery, not the slightly lower solar input amperes.
FEATURES
Since a battery voltmeter and solar amp meter are needed to show that the battery is
really getting charged, most controllers have those meters built in or optional. We always recommend a control with built-in amp meters and volt meters. User-adjustable battery voltage set points is a feature of most controllers, so voltage can be set exactly for your battery type, temperature and age.
Battery Temperature Sensor is available for some to automatically adjust charge voltage for batteries exposed to large temperature changes.
Automatic or Manual equalization, used on flooded batteries gives an occasional overcharge to restore all cells to 100%. The equalization feature is not used on sealed AGM and Gel batteries.


HOW A CHARGE CONTROL WORKS

SERIES CHARGE CONTROLLERS – Connected between the charging source
and the battery. Pulse width modulation (PWM), used in all modern charge controllers uses 3-stages of operation to give the most charging possible for the day.
BULK charge is the first stage, where the maximum power available from the charging
source is fed to the battery until it reaches a preset voltage.
ABSORPTION is the second stage charge where the maximum battery voltage is held
by reducing the charge current just enough to never exceed the target voltage. Reduced
current is done by high speed on and off pulsing, where the controlling "on" time versus
the "off" time of each pulse determines the average charge current. During this stage of
charging there will be some bubbling, or gassing of the battery electrolyte. This is necessary to maintain the health of flooded batteries.
FLOAT is a third stage where battery voltage is reduced after charge is complete. This
avoids excessive evaporating of battery water and benefits battery life. When sealed,
maintenance-free, AGM or gel type batteries are used, voltage set-points are lower to
prevent gassing of the battery.

DIVERSION CHARGE CONTROL – connected between a battery and dump
load. Diversion charge Controllers are typically used when the charging source cannot be
disconnected from the battery, such as wind generators or hydroelectric chargers.
Diversion controllers do not cut off current from the charging source at all. When the
battery charges to the maximum set voltage, the diversion controller connects a “dump
load”such as ceramic air heating resistors or water heating elements to the battery to
dissipate the energy coming from the charging source. The controller adjusts its consumption rate to offset the excess charging exactly, and keep the battery voltage at, and never exceeding, the preset maximum voltage. If you use a windmill that does not have its own charge control, or use hydroelectric generating, a diversion control must be used, since those generators can be damaged if their charge is not absorbed in the batteries at all times. One diversion control handles a combination of solar, hydro and wind, so long as the total amps charge from all of them taken together is within its amp capacity.


Maximum Power Point Tracking

HOW MAXIMUM POWER POINT TRACKING WORKS


MPPT charge controllers employ DC to DC conversion, which allows the solar array
voltage to be higher that the voltage required to charge the batteries. Many years ago solar modules were designed to charge 12 volt batteries. These solar modules were built with 36 cells in series to have a peak power voltage of 16- 18 volts. Two of these modules could be wired in series to charge a 24 volt battery and four could be wired in series for a 48 volt battery. Modules with 72 cells were also available for 24 volt charging. When all modules were made this way, the simple PWM charge controllers described previously worked fine. As grid connected solar became the prominent use for solar modules, cost became the most important factor in module design. This lead to larger 60 cell modules, manufactured in a convenient size that could be carried by one person. These modules have a voltage too high for 12 volt battery charging and too low for 24 volt battery charging and are usually wired in series to get approximately 400 volts DC which is easy to convert to 240 volts AC for connection to the utility grid.
36 cell modules are available with power outputs up to 135 watts and 72 cell modules are available with power outputs up to 190 watts. These modules cost more per watt, but can be used with lower cost PWM charge controllers. It makes economic sense to use these modules on systems that required less than 700 watts. If the power required is greater than 700 watts, the cost savings on the solar modules and the wire between the modules and the batteries to pay the added cost of a MPPT charge controller.
MPPT charge controllers from Schneider (formerly Xantrex), Outback, Morningstar and
Midnite Solar can operate with a maximum input voltage from a solar array of 150 volts,
which can be used with three 60 cell modules in series. Other models from Midnite Solar
can be used with arrays up to 250 volts allowing the use of six 60 cell modules in series.
An added advantage us using a higher voltage solar array made from modules wired in
series is that much smaller wire can be used between the solar array and the charge controller without significant power loss. Every time you double the voltage in a wire, you can carry 4 times as much wattage with the same loss. This saving increases tremendously when you go from 15 volts in a wire to 150 volts.
When choosing an MPPT charge controller, the amp rating of the controller is the
maximum amperage that it can supply to the battery being charged. To find this amperage, add the wattage of all modules in the array and divide by the battery voltage. For example, six 240 watt modules have a total wattage of 1440 watts. If you are charging a 12 volt battery, the charge controller amps required is 120 amps (1440 / 12 = 120). In this case you would need controllers with 60 amp or greater rating. If you were charging a 24 volt battery, only one 60 amp charge controller would be required. If you are using a 48 volt battery you could have an array of 2800 watts and still use a single 60 amp charge controller.

Return to the top


XANTREX C-35, C-40 and C-60 CONTROLS

C-35  35 Amps; 12 or 24 volt
C-40  40 Amps; 12, 24, 48 volt
C-60  60 Amps; 12 or 24 volt

3-stage voltage control

Series for Solar 
or Diversion for Hydro or Wind

2 year warranty
Size 9" x 5" x 2"
Built in terminals accept wire size up to 2 gauge

CONSTANT CHARGE VOLTAGE: Most advanced control method has 3 stages: full solar charge to Bulk Voltage you set as maximum, then tapers off charge in Absorption mode, just enough to keep batteries at, but not exceeding, the bulk voltage you set. After one hour at bulk voltage, a lower Float Voltage takes effect to prevent overcharge. 

DIVERSION CONTROL: XANTREX C35, C40 & C60 can be used as diversion control for wind or hydro. To set up as diversion control, order air or water heat diversion resistors.

BATTERY  EQUALIZATION: Higher voltage automatically equalizes batteries once a month, or can be started manually anytime, or disabled for sealed batteries.

OPTIONAL DIGITAL DISPLAY of both charge amps and battery volts, plus counts amp-hours of charge since last reset. Highly recommended.

C-35DD Charge Control & Digital Display:  $209
(ship $12)
Add this item to the shopping cart
C-40DD Charge Control & Digital Display:  $244
(ship $12)
Add this item to the shopping cart
C-60DD Charge Control & Digital Display:  $279
(ship $12)
Add this item to the shopping cart

Any of the above are available without digital display, deduct $99

I-TEMP Optional plug in battery temperature sensor................ $29  Add this item to the shopping cart
C-40R/50 Remote Digital Display with 50' cable:................ $115 Add this item to the shopping cart
C- 40R/100 Remote Digital Display with 100' cable:.................. $135 Add this item to the shopping cart

XW MPPT60 & MPP80 CHARGE CONTROLLER

For 12, 24, 36, 48, or 60 volt battery banks

THE SCHNEIDER XW MPPT60 (pictured) has a two or three stage charging process, with manual equalization to maximize system performance and maintain expected battery life.
With Maximum Power Point Tracking (MPPT) to deliver the maximum available power from a PV array to a battery bank. Controller has a configurable auxiliary power output Easy to read, two-line, 16- character liquid crystal display (LCD) and four buttons for configuration and system monitoring in stand-alone applications.
A provided Battery Temperature Sensor (BTS) provides automatic temperature-compensated battery charging. The charge controller is able to communicate its settings and activity to other Xanbus-enabled devices.

THE SCHNEIDER XWMPPT80 is the first PV battery charger to use DC input voltages up to 600V. This significantly decreases the current needed in the array to reduce wiring gauges and costs, increase string sizing of the array, and give you the ability to place the array farther from the battery bank. A PV array combiner isn’t required for many installations, please check with us. It can be used with PV arrays with voltages ranging from 195 to 550 VDC and can support an output of up to 80 amps into the battery for battery voltages of 24 or 48 VDC. The PV open circuit voltage must not exceed 600 VDC.
Has a configurable auxiliary output to drive a relay for load control or to turn on devices
such as a vent fan or indicator alarm Auxiliary output can be configured to perform only
one function at a time. Built in PV ground fault protection allows code-compliant installation without the need for additional ground fault protection. Standby and night-time power draws less than one watt.

Item Number Description Shipping Buy Now
C-XWMPPT60 Xantrex 60A, MPPT Charge Controller $20 $585.00
Add this item to the shopping cart
C-XWMPPT80 Xantrex 80A, 600VDC MPPT Charge Controller $20 $1,360
Add this item to the shopping cart

 Return to the top


OUTBACK CHARGE CONTROL-- FM60 and FM80

Maximum Power Point Tracking
To Boost Solar Amps
For 12 Through 48 Volt Batteries

Can also charge 12 or 24 volt Battery
from up to 72 Volt PV Array; not to exceed 150v open circuit

 

 

 

Outback FM60
14.5" x 6" x 6"
12 pounds
5 year Warranty

 

 

 

 

Outback
FM80
16.25" x
6" x 6"
5 year
Warranty
 

 

Outback MATE
Accessory

Multi-stage charging: Bulk, Absorption, Float, and Equalize.
60 amps of DC output current to charge batteries at 12, 24, 32, 36, 48, 54, or 60 volts DC. Regulation voltage is adjustable from 13 to 80 volts DC.

Maximum Power Point Tracking Since the control can boost output current, solar input equal to 48 amps of charging is maximum recommended for the FM60 (maximum rated output: 60 amps) and 64 amps for the FM80 (maximum rated output: 80 amps).

Use higher voltage PV array with lower battery voltage -like charging a 24 volt battery with a 48 volt PV array- reduces wire size and power loss, while increasing the distance possible from the PV array to battery. Accepts any array voltage up to 72 nominal volts and matches to any lower battery up to 48 volts.

The four-line 80 character, backlit LCD display standard on the Outback FM60 and FM80 displays the PV system's performance. It is also used for easy programming and monitoring of the system's operation. Terminals accept up to 4 gauge wire.

Outback MATE system controller, optional accessory, connects to the FM60 as a remote control. MATE duplicates the built-in control panel that comes with the FM60 and FM80. MATE can also program and remote control Outback inverters, from a location 300 feet distant. MATE includes a RS232 computer port for data logging.

ADDITIONAL SPECIFICATIONS FOR SIZING YOUR SYSTEM

OUTBACK 60A Charge Controller
MAX INPUT WATTAGE OF ARRAY-
12v Battery = 800 watts Max
24V Battery = 1600 watts Max
48V Battery = 3200 watts Max

Outback 80A Charge Controller
MAX INPUT WATTAGE OF ARRAY-
12v Battery = 1250 watts Max
24V Battery = 2500 watts Max
48V Battery = 5000 watts Max

Item Code/Description Additional
Shipping
Price Buy Now
C-FM60 Outback Charge Control $20 $610 Add this item to the shopping cart
C-FM80 Outback Charge Control $20 $700 Add this item to the shopping cart
C-OBMATE System Controller   $295 Add this item to the shopping cart
C-OBTEMP Compensates charge voltage for battery temperature   $29 Add this item to the shopping cart


MIDNITE CLASSIC MPPT CHARGE CONTROLLER

The MidNite Classic charge controller maximizes the flexibility and features available in a charge controller. At this time, the Classic is the only MPPT charge controller that features arc fault detection, a new 2011 NEC code requirement. These controllers also feature ground fault protection so that a separate GFP breaker assembly is not necessary. This allows for more breaker space in your DC box. There are three models
available that accommodate solar arrays up to 150, 200, or 250VDC of operating voltage.
MPPT modes with user adjustable power curves for solar, wind or hydro are built in, along with a learning mode for selfoptimization. No hub is required for stacking multiple units. They have two auxiliary outputs, a dry contact relay and a 12V
output.
Each model comes with optional snap-on covers and hole plugs for sealing openings in dusty or salt-air environments, using them in this manner reduces output by about 20%.

 

 

Item Code/Description Additional
Shipping
Price Buy Now
C-MID-MPPT150: 150V Midnite MPPT Charge Controller $20 $765 Add this item to the shopping cart
C-MID-MPPT-200: 200V Midnite MPPT Charge Controller $20 $810 Add this item to the shopping cart
C-MID-MPPT-250: 250V Midnite MPPT Charge Controller $20 $855 Add this item to the shopping cart
C-MID-BTS: Battery Temperature Sensor   $25 Add this item to the shopping cart

Return to the top


MORNINGSTAR TRISTAR MPPT CHARGE CONTROLLERS

Morningstar’s TriStar MPPT solar controller with TrakStar Technology™ is an advanced maximum power point tracking (MPPT) battery charger for off-grid photovoltaic (PV) systems up to 3kW. Both controllers can be used with arrays with a maximum open circuit voltage of 150 VDC and charge batteries between 8 and 72 VDC. A remote temperature sensor is included.

The controller provides the industry’s highest peak efficiency of 99% and significantly less power loss compared to other MPPT controllers. The TriStar MPPT features a smart tracking algorithm that maximizes the energy harvest from the PV by rapidly finding the solar array peak power point with extremely fast sweeping of the entire I-V curve. This product is the first PV controller to include on-board Ethernet for a fully web-enabled interface and includes up to 200 days of data logging. Optional TriStar meter and remote provide detailed operating data, alarms and faults and three LED’s display system status.

Additional networking options are available. The MeterHub allows multiple Morningstar
products to communicate over a Meterbus network to enable multiple controllers to share a single TriStar meter and display both single controller data as well as aggregated data for the entire system.

Weighs 9.2 lbs, dimensions are 11.4” x 5.1” x 5.6”. 5-year warranty. ETL Listed to UL
1741.

ADDITIONAL SPECIFICATIONS FOR SIZING YOUR SYSTEM

TriStar 45A Charge Controller
MAX INPUT WATTAGE OF ARRAY-
12v Battery = 600 watts Max
24V Battery = 1200 watts Max
48V Battery = 2400 watts Max

TriStar 60A Charge Controller
MAX INPUT WATTAGE OF ARRAY-
12v Battery = 800 watts Max
24V Battery = 1600 watts Max
48V Battery = 3200 watts Max

Item Code Description Shipping Buy Now
C-TSMPPT45 45A TriStar MPPT Charge Control $14 $458Add this item to the shopping cart
C-TSMPPT60 60A TriStar MPPT Charge Control $20 $578.00Add this item to the shopping cart
C-TRISTARDD C-TRISTAR Digital Display   $95.00Add this item to the shopping cart
C-TRISTARRD C-TRISTAR Remote Display   $125.00Add this item to the shopping cart
C-TSHUB1 MeterHub: Communications Network Hub   $98.00Add this item to the shopping cart
C-TSRSC1 Communications Adapter- enables networking capability by converting a controller or inverters RS-232 port to a standard RS-485 serial connector. The RSC-1 may be used with any Morningstar controller or inverter already equipped with an RS-232 port   $62.00Add this item to the shopping cart

 


MORNINGSTAR TRISTAR PWM CHARGE CONTROLLERS
45 and 60 amp models for 12, 24, and 48 volt Systems

T
HREE-FUNCTION SOLAR CONTROLLER      

Morningstar’s TriStar Controller is a three-function controller that provides reliable solar battery charging, load control or diversion regulation. The controller operates in one of these modes at a time and two or more controllers may be used to provide multiple functions.  The Controller is UL listed and has a 5 year warranty.

Key Features and Benefits

  • Large heat sink and conservative design enables operating at full ratings to 45°C. No need to de-rate.

  • RS-232 connects to a personal computer for custom settings, data logging and remote monitoring and control.

  • DIP switch provides user with a choice of 7 different digital presets and custom settings via RS-232.

  • Fully protected against reverse polarity, short circuit, overcurrent, high temperature, and overvoltage.

  • Larger power terminals and conduit knockouts . Extra space for wire turns. Fits on power panels.

  • Connecting battery sense wires and optional remote temperature sensor will improve control accuracy. Constant voltage series PWM algorithm increases battery capacity and life.

  • 3 LED’s to indicate status, faults and alarms. Optional meter displays extensive system and controller information, automatic self-test and reset capabilities. Meter connection via RJ-11 phone jack.

  • Pushbutton provides manual reset and stop/start battery equalization or load disconnect.

Item Code/Description Additional
Shipping
Price Buy Now
C-TRISTAR 45: 45 amp controller $14 $165 Add this item to the shopping cart
C-TRISTAR 60: 60 amp controller $14 $210 Add this item to the shopping cart
C-TRISTAR Digital Display   $95 Add this item to the shopping cart
C-TRISTAR Remote Display   $125 Add this item to the shopping cart
C-TRISTAR RTS: remote temperature sensor   $30 Add this item to the shopping cart


SOLAR BOOST 2000E
25 Amp, 12 Volt Charge Control for Cabin or RV
Boost PV charging Amps like larger Solar Boost Controls

Maximum Power Point Tracking converts the extra voltage in a solar module to increased charging amps. Offers the same current boost and meter as the larger Solar Boost models above, but only for 12 volt solar with a 12 volt battery. Solar current boost in highest in cold weather when batteries are low, and that is also the time that many of us really need the advantage.

Two stage control, does bulk charge and absorption, but no "float" stage. Output can be adjusted from 13 to 15 volts manually.

Flat metal panel mounts flush in recreational vehicle cabinet or use the optional wall surface mounting box for a small home system. Battery equalize function by a manual equalize button. Screw terminals for 10 gauge wire. Optional terminal block splices to wire up to 4 gauge. 4.6"H x 6.4"W

C-BS 2000E: 25 amp RV/Home Control....$250 (shipping $10) Add this item to the shopping cart
C-BS 2000BOX: Wall mount box for 2000 control...$35 Add this item to the shopping cart
C-BSE TEMP: Battery temperature Sensor for all the above...$35 Add this item to the shopping cart
O-BLOCK: Terminal block connects control to larger wires...$9 Add this item to the shopping cart

 

SCI MARK 22
22
AMP 12 VOLT FOR RV AND CABIN

UNFORTUNATELY, THIS ITEM HAS BEEN DISCONTINUED. We are looking for a replacement and hope to have something comparable soon!

THE BEST...
...IN SOLID-STATE SOLAR REGULATORS

The Specialty Concepts Inc MARK Series™ of charge regulators provides the user with all necessary information to monitor the operation of their solar system. Whether in an RV, a home, or other application, the MARK Series™ provides a good-looking, user-friendly and convenient unit. 12 volt,  22 amp capacities.

Features:

  • Digital display offers Battery Voltage, PV Current, and Charge Set Point

  • User adjustable Voltage set point

  • Reverse Leakage Protection

  • Overcurrent and Incorrect Wiring Protection

  • Charge stops when battery reaches 14.4 volts, user adjustable.

  • Charging resumes when voltages fall to 13.4 volts.

  • Entirely solid state. Shunt control method short-circuits solar input to stop charge.

  • Warranty is 5 years.

All on a flat panel to flush mount in a square cut out on an RV cabinet.  Screw terminals accept 10 gauge wire directly, or optional terminal block anchors large solar and battery cables up to 4 gauge with easy screwdriver connections, O-BLOCK.

7 1/2"W x 4 1/4"H x 2 1/4"D

C-MARK 22: Mark 22 Charge Control...$108 (shipping $10)

DISCONTINUED

O-BLOCK: Terminal block connects control to larger wires...$9 Add this item to the shopping cart

 

XANTREX 12 AMP CHARGE CONTROL
12 VOLT ONLY

High Quality, Special Features for small cabin, rentals, sign lighting, RV & Marine. Simple. No Meters. 4" x 6" x 1.5"

Includes a TIMER for Sign/ Anchor/ Night Lights

Early Warning, then Disconnect of DC loads if Low Battery Voltage

Quality, Constant Voltage, pulse width modulated charge control with many unique features. Ideal for small solar powered ski cabins, rentals and boats, as well as sign lighting projects and sealed battery systems.

Charge Control has 3 stage charging with bulk charge adjustable from 13 to 17 volts, float charge adjustable from 12.5 to 14.5. Removable knobs on adjuster.

Low Voltage Disconnect cuts off 12 amp DC load circuit if battery voltage gets too low. Adjustable cut-off and reconnect volts, removable adjustment knobs. Load flash on-off warning period prior to disconnect, then disconnect 5 minutes later unless loads have been reduced. Manual reset button allows one 10 minute grace period for operation of DC loads after disconnect. Flash and grace period reset can be disabled and a 2 minute delays acts on low voltage disconnect to avoid tripping on surges.

Night Light Timer for sign lighting, anchor light, etc... Turns light on at dark, and turns light off after run duration from 2 to 8 hours adjustable, or at dawn. Cancels if low voltage disconnect point is reached.

Automatic Equalization increases the charge by one volt above normal for two hours every 30 days, for immediately following any low battery disconnect. Can be disabled if sealed batteries are used.

Accepts solar and battery wires up to 10 gauge. Two year warranty.

C-C12: 12 Amp Charge Control... $110 (shipping $10) Add this item to the shopping cart
I- TEMP Optional plug in battery temperature sensor................ $29  Add this item to the shopping cart
O-BLOCK: Terminal block connects control to larger wires...$9  Add this item to the shopping cart

Return to the top


MORNINGSTAR SUNGUARD
4.5 AMP CONSTANT VOLTAGE CHARGE CONTROL

No Meters, 12 Volt Only. Five year Warranty

Very Small charge control for a single panel and small battery. Constant voltage, pulse width modulation. Regulates to constant 14.1 volts with temperature compensation. Six milliampere internal power consumption. No meter included, so these are the best for fence chargers, small boats, radio repeater sites and other small unattended projects. Has wire leads, 2 solar, 2 battery. Not recommended for residential power system, because adding appropriate meters brings total cost higher than other small residential controls. Epoxy potted and sealed. 1 1/2" x 2" x 2 1/2".

C-SUNGUARD: 12 Volt only, factory set to 14.1 voltage...$33 Add this item to the shopping cart
O-BLOCK: Terminal block connects control to larger wires...$9  Add this item to the shopping cart

 

MORNINGSTAR SUNSAVER

The SunSaver is a very reliable small charge controller, Constant voltage pulse width modulation charging is a proven advance compared to the common on/off PV regulators. SunSavers are modifiable for sealed or flooded batteries. A rugged anodized aluminum case and epoxy encapsulated electronics enhance durability and longevity. A temperature compensation sensor in the charge controller varies full charge voltage with temperature. May be used in parallel for higher current. They have LED charging and load control indicators in Low Voltage Disconnect (LVD) models. 5-year warranty. Made in the USA. Dimensions: 6" x 2.2" x 1.3"

Item Code Description Price Buy Now
C-SS-10L-12 12V, 10A charging with LVD $63 Add this item to the shopping cart
C-SS-10L-24 24V, 10A charging with LVD $69 Add this item to the shopping cart
C-SS-20L-12 12V, 20A charging with LVD $85 Add this item to the shopping cart
C-SS-20L-24 24V, 20A charging with LVD $90 Add this item to the shopping cart


LOADS FOR DIVERSION CONTROL

         Air Heater Diversion (NEW)               Water Load                                       

When diversion control is needed for hydro, wind, or a combination with solar, use these heater loads with a diversion capable charge control. Controls that can operate as diversion type are Xantrex C-Series Controls (C35, C40, C60) and Morningstar Tristar 45 and 60 Controls.

DIVERSION never disconnects the charge source from the battery. The control connects to the battery and "absorbs" or "burns off" exactly enough power to offset any excess charging. The load dissipates the surplus power into heated air or water. Diversion heat loads should be selected for at least as many amps as all charging sources combined, but must be several amps LESS than maximum amp rating of the control to be used. A load that accepts more amps than the control can handle may cause the control to shut down.

Item # Description Additional Shipping Buy Now
AIR HEATER DIVERSION LOAD boxes as pictured with connection terminals
C-HL-12V 45A, 12V, 675W $14 $126
Add this item to the shopping cart
C-HL-24V 35A, 24V, 1000W $14 $136
Add this item to the shopping cart
C-HL-48V NEW VERSION:
36A, 48V, 2160W
$14 $199
Add this item to the shopping cart

Budget Ceramic Resistor 300 Watt, 0.5 or 1 Ohm

One is a 15 amp, 12 volt load. Two parallel connected for 30 amps, 12 volt. Two in series connected for 15 amp, 24 volt; two pairs 30 amp, 24 volt.

Make your own mount from shelf brackets...................$40 Add this item to the shopping cart

Water Heater Load with 1" male thread

15 volt- 30 or 60 amp; OR 30 volt 30 amp..................$125 Add this item to the shopping cart
30 volt- 24 or 48 amp: OR 60 volt 24 amp..................$175 Add this item to the shopping cart

Fits most standard hot water tanks with screw-in element.

Adapter for square flange type water tank....................$28 Add this item to the shopping cart

Minimum shipping $10 per whole order covers all items with no shipping listed

Return to the top

 

 
 
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