Product Overview
The BSL RE9 is a 87.8kWh, 691.2V high voltage lithium battery pack from the BSLBATT ESS-BATT RE Series. Designed for indoor commercial and industrial energy storage, it combines 9 LiFePO4 battery modules in a stacked assembly for use with a suitably matched high voltage inverter or power conversion system.
Key Features
- 87.8kWh rated system energy provides storage for commercial solar and backup power applications.
- 9 modular battery packs, each rated at 76.8V and 9.75kWh, form a 691.2V 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 604.8–756V battery operating range.
Why Choose This Product?
The RE9 combines 87.8kWh 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 730kg assembly.
Resources
Technical Specifications
| Specification | Detail |
|---|---|
| Brand | BSLBATT |
| Model | ESS-BATT RE9 |
| Supplier Product Code | BSL-HV-CP-24-P9 |
| Product Type | High voltage lithium battery pack |
| Cell Chemistry | Lithium Iron Phosphate (LiFePO4) |
| Number of Battery Modules | 9 |
| System Rated Energy | 87.8kWh |
| System Rated Voltage | 691.2V |
| Operating Voltage Range | 604.8V – 756V |
| 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 × 1740mm (±5mm) |
| Weight | 730kg (±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 |
Important:
All solar products, power systems, water heating and gas products and their components must be installed by appropriately qualified personnel. All installations must adhere to local wiring regulations and standards. Sustainable Online will not be held liable for any product malfunctions as a result of incorrectly installed systems.

