Discover Energy Lithium-Ion Battery, 48 volts, 6650 watt-hour capacity. Xanbus enabled model.
The last year has seen the arrival lithium ion battery technology to the solar electric industry. Using drastically different chemistry and architecture than traditional battery types; lithium ion batteries provide for a deeper depth of discharge and longer lifespan, all in a smaller package. Unlike previous battery types, where a set of batteries is charged and discharged as a single unit, lithium ion batteries require management on a Per Cell basis, often managed by an integrated Battery Management System that is built into the battery. With lower internal resistance than traditional batteries, Li-Ion batteries can be charged and discharged at much higher rates (higher amperages) than normal without suffering any ill effects.
The 42-48-6650 is a single 48 volt battery, with a rated storage capacity of 6,650 watt-hours. Mulitple batteries, up to 10 max, can be tied in parallel for higher capacity battery banks.
The on board Battery Management System (BMS) monitors cell and battery voltage, battery current, temperature, and state of charge. The BMS also performs balancing of the individual cells, micro-managing the charging of each cell individually. The BMS sounds a buzzer when fault limits are reached, reports a fault, and then will shut the battery down after a delay of 120 seconds.
Voltage on Li-Ion batteries holds steady over a wide state of charge, allowing the system to operate at a healthy battery voltage even when the batteries are heavily discharged down to a state of 20% or lower; allowing for a greater amount of usable power in a given package.
The Li-Ion batteries have a narrower temperature operating range, and are best used in environments at typical room temperatures. Backwoods does NOT recommend using this type of battery in a cold environment.
Discover is currently undergong cycle life evaluation of their Li-Ion products. A standard test period lasts 2-3 years, cycling the test bed at different charge/discharge rates. Their heaviest testing shows encouraging results with batteries retaining near full capacity after over 2000 cycles. Expectations are for cycle lifes of 3000 or more; but have NOT been validated at this stage of the process. These results are considered preliminary, and are not supported claims at this time.
Charge Temperature: 32F to 113F
Discharge Temperature: -4F to 122F
Optimized Temperature: 59F to 77F
Nominal Voltage: 51.2 volts
Charge Voltage: 54.4 volts
Maximum Voltage: 59.2 volts
Minimum Voltage: 44.8 volts
Nominal Capacity: 130 Ah
Bulk Current: 0.5C or 65 amps recommended, or 130 amps maximum
Dimensions: 18.5"L x 13.3"W x 14.7"H
Weights 192 lbs
Cell Chemistry LiFePO4
UN 38.3 shipping certified
UL 2271, 1973, and IEC 62133 all pending
Schneider meets Discover
Schneider Electric has been working with Discover Energy to build the functionality needed to utilize lithium ion into their existing Conext SW and XWPlus product lines. Their close work specifically with Discover has created a solution that allows the Discover batteries (44- and 42- series) to communicate directly with the Schneider Xanbus used by the Schneider products. The batteries become an integrated component of the SW and XWPlus systems, self-configuring battery charge parameters, and providing the high degree of control and monitoring needed by the lithium ion batteries. Given our track record with Schneider products, and Discover's history as a battery manufacturer; Backwoods has chosen this solution as our first offering into the Li-Ion field.
Integration of the Discover and Schneider products does require a Bridging Adapter to handle the proper communications. Sold and sourced seprately at this time, please call Backwoods for recommendations.
* Please note: This item must ship via truck freight. We're happy to give you a shipping quote for your order ahead of time. Just give us a call at (208) 263-4290. Or if you'd prefer to order online, follow the normal checkout procedure and we will contact you within 1 business day with the cost for shipping these items. If you do not wish to pay the additional costs, we will cancel your order. If you accept, we will charge the additional shipping as a separate transaction. Please read our Shipping Policies for more information.
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model 42-48-6650 SKU B-DI-LI-42-48