Deye BOS-GM5.1 Solar Battery

1. Scalable Storage for Bigger Loads

1. Australian and international listings show the BOS-G series is designed so 3–12 BOS-GM5.1 modules can be connected in series, giving system capacities from about 15.36 kWh up to 61.44 kWh with high-voltage operation. 

   What that means for you:

   • Start with three modules if you just want a solid home system

      

   • Step up to eight, ten or twelve modules for larger homes, shops or offices

      

   • Expand over time as more loads appear – EV chargers, extra air-con, fridges, machinery, etc.

      

   You’re not stuck with a one-size-fits-all battery – the rack can be built to match your actual demand.

2. More Use of Your Own Solar, Less Bought From the Grid

With a high-voltage rack full of BOS-GM5.1 modules:

• Daytime surplus solar charges the battery bank
  
  
• You can run evening and overnight loads from stored solar instead of buying as much from the grid
  
  
• On cloudy days, the extra capacity helps smooth things out so you’re not bouncing back to full grid use immediately
  
  

Paired with the right Deye hybrid inverter, this is especially useful for busy homes, rural properties and small commercial sites where the evening and weekend loads are heavy. 

3. Long Life, Safe LiFePO₄ Chemistry

The model comes with: 

• LiFePO₄ (LFP) cells – cobalt-free, stable chemistry
  
  
• ≥ 6000 cycles at 90% depth of discharge under test conditions
  
  
• Low self-discharge and no memory effect
  
  

In everyday terms:

• The chemistry has an excellent safety record in home and commercial battery systems
  
  
• It’s designed to be charged and discharged every day for many years
  
  
• With a 10-year warranty from Australian suppliers, it’s clearly intended as a long-term part of your energy setup
  
  

4. Intelligent BMS and Inverter-Friendly Comms

The BOS-GM5.1 includes an integrated Battery Management System (BMS) and supports CAN 2.0 and RS485 communication, as shown in Deye’s BOS-G documentation and international listings. 

Benefits for you:

• The battery modules talk to the Deye high-voltage box and inverter, so charge, discharge and protection are all coordinated
  
  
• The BMS provides over-charge, over-discharge, over-current and temperature protection, and balances cells for longer life
  
  
• System status can be monitored via the inverter platform, not just at the rack
  
  

That means a BOS-GM rack doesn’t just hold energy – it’s actively managed for safety and performance.

5. Tidy Indoor Rack Install (IP20)

Deye’s BOS-G datasheet describes the BOS-GM5.1 as a 19″ embedded rack module, IP20 rated, with a compact footprint (~440 × 570 × 133 mm). 

What you’ll notice:

• The modules slide into a rack or cabinet, giving a clean “server-rack” style look
  
  
• It’s meant for indoor use – plant rooms, electrical rooms, comms rooms and similar
  
  
• Everything stays in one tidy spot instead of multiple batteries around the building
  
  

BSC Renewables will locate the rack where it’s accessible, compliant and out of general traffic.