Product Overview
The BSL RE4 is a 39kWh, 307.2V high voltage lithium battery pack from the BSLBATT ESS-BATT RE Series. Designed for indoor commercial and industrial energy storage, it combines 4 LiFePO4 battery modules in a stacked assembly for use with a suitably matched high voltage inverter or power conversion system.
Key Features
- 39kWh rated system energy provides storage for commercial solar and backup power applications.
- 4 modular battery packs, each rated at 76.8V and 9.75kWh, form a 307.2V nominal battery system.
- Intelligent battery management provides overvoltage, overtemperature and short-circuit protection.
- 127A rated charge/discharge current, with the BMS adjusting current according to temperature, cell voltage and state of charge.
- CAN communication supports integration with documented compatible equipment.
- Natural cooling and built-in module fire protection support the indoor energy storage design.
- Manufacturer-rated cycle life of more than 6,000 cycles at 80% depth of discharge and 25°C.
Applications
- Commercial and industrial solar energy storage.
- Business backup power systems using a compatible high voltage inverter.
- Engineered energy storage projects requiring a 268.8–336V battery operating range.
Why Choose This Product?
The RE4 combines 39kWh of lithium iron phosphate storage with a modular stacked layout and integrated battery management. It is a practical option for projects that require a defined high voltage battery capacity and indoor installation, with inverter selection based on the full operating voltage range and the approved communication protocol.
Important Notes
- This is a high voltage battery system. It must not be connected to a 48V or 51.2V low voltage battery input.
- The installer must verify the exact inverter model, battery voltage window, current limits, CAN protocol and approved compatibility before installation. A shared CAN connection alone does not confirm compatibility.
- IP20 rating: install indoors in an appropriate protected location.
- Installation must be carried out by a qualified electrician and supported by a valid South African Certificate of Compliance (CoC).
- The limited manufacturer warranty is 10 years or 6,000 cycles at 80% depth of discharge, whichever comes first. Operation within specified limits and the manufacturer's full warranty terms are required.
- The manufacturer's temperature range does not override BMS restrictions; charge and discharge limits remain subject to operating conditions.
- External inverter equipment, installation and site-specific protection must be specified separately.
- Arrange suitable handling equipment and confirm floor loading for the 390kg assembly.
Resources
Technical Specifications
| Specification |
Detail |
| Brand |
BSLBATT |
| Model |
ESS-BATT RE4 |
| Supplier Product Code |
BSL-HV-CP-24-P4 |
| Product Type |
High voltage lithium battery pack |
| Cell Chemistry |
Lithium Iron Phosphate (LiFePO4) |
| Number of Battery Modules |
4 |
| System Rated Energy |
39kWh |
| System Rated Voltage |
307.2V |
| Operating Voltage Range |
268.8V – 336V |
| Cell Capacity |
3.2V / 127Ah |
| Module Configuration |
1P24S |
| Module Rated Voltage |
76.8V |
| Module Rated Energy |
9.75kWh |
| Rated Charge/Discharge Current |
127A; BMS derating according to temperature, cell voltage and state of charge |
| Cooling Method |
Natural cooling |
| Cycle Life |
>6,000 cycles at 80% depth of discharge and 25°C |
| Communication Protocol |
CAN |
| IP Rating |
IP20 |
| Installation Environment |
Indoor |
| Operating Temperature |
−20°C to 55°C |
| Storage Temperature |
0°C to 35°C |
| Operating Humidity |
10%–90% RH, non-condensing |
| Maximum Altitude |
3,000m |
| Fire Protection |
Built into each battery module |
| Dimensions (W × D × H) |
764 × 740 × 1005mm (±5mm) |
| Weight |
390kg (±3%) |
| Module Dimensions (W × D × H) |
740 × 645 × 135mm (±5mm) |
| Module Weight |
70kg (±3%) |
| Warranty |
10-year limited manufacturer warranty or 6,000 cycles at 80% depth of discharge, whichever comes first; conditions apply |
