BSLBATT HV Pack 127Ah

The BSLBATT HV Pack 127Ah, part of the ESS-BATT RE Series, is a modular high-voltage lithium battery system designed for commercial and industrial (C&I) energy storage.

Each battery module provides 9.75kWh of storage, with stack configurations ranging from 39kWh to 107.3kWh. Up to five battery clusters can be connected in parallel, expanding total storage capacity to 536.5kWh for larger installations.

The HV Pack 127Ah supports integration with a range of high-voltage inverters, including selected models from Sunsynk, ATESS, GoodWe and Solis, with additional matched systems from Deye and MEGAREVO.

The 127Ah HV Pack combines lithium battery technology with an intelligent BMS and integrated safety features to support reliable, long-term operation in indoor C&I installations

Key Specifications

  • Cell Capacity: 3.2V / 127Ah
  • Module Capacity: 9.75kWh
  • System Capacity: 39kWh – 107.3kWh per stack
  • System Rated Voltage: 307.2V – 844.8V
  • Rated Charge/Discharge Current: 127A (subject to BMS derating)
  • Maximum Discharge Rate: 1C
  • Cycle Life: Over 6,000 cycles at 80% DoD (25°C)
  • Cooling Method: Natural Cooling
  • Communication: CAN
  • Operating Temperature: -20°C to +55°C
  • Ingress Protection: IP20
  • Warranty: 10-year limited manufacturer warranty

Product Benefits

  • Choose from eight stack configurations ranging from 39kWh to 107.3kWh, with the option to connect multiple clusters in parallel as storage requirements increase.
  • Supports up to 1C discharge for applications requiring high power output.
  • The battery technology delivers over 6,000 cycles at 80% depth of discharge. Supporting long-term daily operation.
  • Vertical stacking architecture reduces installation footprint.
  • The BMS monitors battery operation and provides overvoltage, overtemperature, and short-circuit protection, supported by built-in pack fire protection.
  • CAN communication supports integration with compatible energy management and inverter systems.
  • Operates without active cooling fans in the battery modules, reducing moving parts and maintenance requirements.



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