Deye BOS-G Pro — Modular High-Voltage Battery System
A rack-mounted, stackable LiFePO4 battery platform (5.12 kWh per module) built for commercial and light-industrial self-consumption systems.
Key Specifications
- Stackable 5.12 kWh modules — from 5 per stack (25.6 kWh installed, 23.04 kWh usable); maximum and compatibility per inverter and Deye's list
- Dedicated BOS-G-PDU-2 BMS per stack for balancing, protection, and inverter communication
- Two rack sizes (13-layer / 9-layer) to match available plant-room space
- LiFePO4 chemistry — ~6,000 cycles at 90% DoD, 10-year warranty
The BOS-G-Pack5.1 is the base building block of Deye's BOS-G Pro energy storage line: a single 5.12 kWh, 51.2 V LiFePO4 module rated at 100 Ah. Rather than sizing a battery bank around one large, fixed-capacity unit, the BOS-G Pro architecture is built to be stacked — starting from 5 modules per stack (25.6 kWh installed, of which 23.04 kWh is usable at 90% depth of discharge), with the maximum number of modules and compatibility depending on the inverter and Deye's compatibility list — all from the same base component, which keeps spare parts and service simple regardless of the final system size.
Each stack is paired with a BOS-G-PDU-2 battery management unit, which handles cell balancing, protection, and communication between the battery stack and the Deye hybrid inverter — a battery module by itself is only cells; the PDU is what makes the stack safe to operate and lets the inverter see it as a single coherent battery.
The modules mount into one of two rack sizes: the 3U-HRACK-2G (13-layer cabinet, holding up to 12 modules plus the PDU) for larger installations, or the compact 3U-LRACK-2G (9-layer, up to 8 modules plus PDU) where floor space is tighter. Both are standard rack form factors designed for plant rooms and dedicated battery enclosures rather than a garage wall mount.
LiFePO4 chemistry is chosen specifically for this scale of system for its thermal stability and long service life — Deye rates the BOS-G Pro module for roughly 6,000 charge/discharge cycles at 90% depth of discharge, backed by a 10-year warranty.
Key Specifications — BOS-G-Pack5.1
- Capacity
- 5.12 kWh
- Nominal Voltage
- 51.2 V
- Rated Capacity
- 100 Ah
- Chemistry
- LiFePO4
- Cycle Life
- 6000 cycles
- Depth of Discharge
- 90%
- Warranty
- 10 years
Specifications are taken from the manufacturers' published datasheets (Deye, LONGi, JinkoSolar, LuxpowerTek) and may be updated by the manufacturer without notice.