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15kWh Lithium Powerwall Battery Emergency Power Supply for Homes | BSLBATT

15kWh Battery Bank

The BSLBATT B-LFP-15PW is a fully integrated energy storage and management solution for 15 kWh batteries. Up to 16 units can be used together for additional capacity. The PowerWall Series has been designed for trouble-free mounting and is easy to connect with other system components. Home battery storage systems capture and store electricity from solar panels or the grid.
  • B-LFP-15PW
Cycle Life:
Design Liffe:

Product Description


15 kWh BSLBATT Lithium Powerwall Battery


Energy Storage System(ESS) stores electric energy and utilize them for later consumption. It is purposed to improve energy efficiency, by enhancing the quality of renewable energy that results stabilization of power supply system. BSLBATT Lithium provides most optimal energy solution for the users using our state-of-the-art energy storage system with a long lifespan and a top-notch quality. 

15 kwh lithium battery

battery powered homes


The BMS provides relay and analogue outputs and CAN Bus for independent control of (and communication with) the inverters and solar charge controllers through a multi core cable and Ethernet cable respectively. Charge and discharge current limits and state of charge values are some of the important parameters transmitted by the BMS. The Lite is configured prior to delivery for the applicable inverter brand.


When paired with solar, the BSLBATT lithium Power wall is the perfect way to automatically save money while paying the lowest possible cost for your energy.




Our intelligent software combines weather, utility rate, and historical solar production and energy consumption data to continually drive energy efficiency and improve system performance to meet your specifically tailored goals.


Lithium Iron Phosphate batteries might seem expensive when compared to lead acid batteries, but this is not true. A proper scenario comparison will reveal that the purchase costs are very similar and any marginal premium for a LiFePO4 battery is more than compensated for by longer life, and a very high efficiency. The high efficiency means that far less energy is wasted and that the solar array can be 30% smaller to achieve the same results. In general - because of the high DoD capability and high efficiency the ampere hour rating of a BSLBATT Lithium Battery need only be 35% of a lead acid battery to give the same useful output - this is important when comparing costs between the two technologies.

Compact, Integrated and Attractive:

The BSLBATT (LiFePO4) Home and Business batteries range covers the varying needs of home owners and small to medium business premises with models ranging from the B-LFP-2.5PW to the largest B-LFP-20PW. The “Home” models are wall mounted offering the ultimate in space saving. All models are integrated with the necessary Battery Management System (BMS) and control circuitry to protect the pack and interface with the seperately supplied external inverter/charge units. The standard enclosure is powder coated in white.

Power Interface:

Suitably sized positive and negative cables are provided for connecting the 48V DC cables to the inverter and solar charge controller. The DC circuit is protected with a shunt trip circuit breaker.

Product Highlights

● Non-Toxic & Non-Hazardous Cobalt-Free LFP Chemistry

● High safety battery design

● No Heat Generation, Mitigation, Thermal Monitoring or Toxic Cooling

● Wall mounted all-in-one format

● Includes battery unit, mounting brackets and screws, battery interconnect cables, and box removal handles

● Fast Charge & Discharge Rates

● Long cycle life (≥ 6000 cycles @ 80%)

● Advanced High/Low temperature cycle performance

● Seamless Integration with All Industry Standard Inverter/Charge Controllers

● Built-In Safety – BMS with Breaker On/Off Switch for Shipping & Installation

● Intelligent LED & LCD display

● Supports up to 16 PowerWall battery modules in parallel.



Model                                             BSLBATT B-LFP Battery BANK

          Electrical Characteristics

Nominal Voltage 51.2V(16series)
Nominal Capacity 100Ah/200Ah/300Ah
Energy 5120kWh/10240kWh/15360Wh
Internal Resistance ≤60mΩ
Cycle Life ≥6000 cycles @ 80% DOD, 25, 0.5C ≥5000 cycles @ 80% DOD, 40, 0.5C
Design Life ≥10 years
Months Self Discharge ≤2%@25
Effificiency of Charge ≥98%
Effificiency of Discharge ≥100% @ 0.2C ≥96% @ 1C



Charge Cut-off Voltage 54.0V±0.1V
Charge Mode 1C to 54.0V, then 54.0V charge current to  0.02C (CC/CV)
Charge Current 100A
Max. Charge Current 130A
Charge Cut-off Voltage 54V±0.2V(Floating charge voltage)


Max Charge Current 100A (Continuous)
Peak Discharge Current (<3 secs) 110/300A
Discharge Cut-off Voltage 38V±0.2V


Charge Temperature 0~60℃ (Under 0 extra heating mechanism)
Discharge Temperature -20~60℃ (Under 0work with reduced capacity)
Storage Temperature -40~55 @ 60%±25% relative humidity
Water Dust Resistance Ip21 (The battery cabinet supports Ip55)



Maximum Configuration 16 batteries in parallel
Case Iron (Insulation painting)
Dimensions 770*470*120/175 mm
Weight 45/80KG
Protocol (optional) RS232-PC RS485(B)-PC RS485(A)-Inverter CANBUS-Inverter


SOC Light 6 * LED
Display Screen LCD(Optional)
Limit charge current 20A

Strong & Durable Structure

BSLBATT Wall-mounted home lithium battery adopts the patented rhombus 18650 LiFePO4 cells. The whole internal assembly from cells, modules, BMS to components are screw fastening that presenting utmost safety and reliability.

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15kwh battery bank

                                   Performance Characteristics

Powerwall Long Life
Powerwall Different current
Powerwall Charging
powerwall storage

You can use the B-LFP-15PW to protect your home by:

Battery Backup – A simple, robust option for using clean energy to keep a building powered during power outage.

Self-Supply – Obtain energy independence by storing excess solar energy for later use

Time-of-Use – Store off-peak grid power for use when utilities charge the highest rates.

Demand Charge Curtailment – Reduce the demand charge for businesses

Off-grid – Use renewable energy to power your home during the day light, and stored excess energy for the night.


“BSLBATT batteries eliminated the most difficult challenges we face when building microgrids in remote tropical locations. The batteries are much easier to transport and they have a good chance of lasting the entire 20 years. This means BSLBATT batteries generally pay for themselves in under 4 years!”