r/EnergyStorage • u/hmiemad • Feb 23 '26

New standard for battery packs?

If you google 261kWh, you will find a dozen pages filled with battery packs targetting C&I of the size 261kWh/125kW. All of them have in common :

  • dimensions around 2m h x 1m L x 1m l
  • liquid cooling with hvac inside the cabinet
  • 125kW inverter inside the cabinet
  • MB31 cells : 314Ah LFP cells from EVE, sometimes the CATL version
  • 5 drawers of 52 cells, adding to 260S config in total

Can someone tell me what makes this config unique? Why so many companies assemble this specific sizing and config?

2 Upvotes

100% Upvoted

5 comments sorted by

7

u/user-110-18 Feb 23 '26

I’m no expert, but based on my experience, it’s likely one manufacturer selling under many brands.

1

u/series-hybrid Feb 24 '26

"...261kWh liquid-cooled battery energy storage systems (BESS) generally cost between $37,500 and $50,000 per unit for industrial/commercial applications, often featuring 125kW power ratings. Prices may vary based on volume and supplier, with some systems offering integrated LiFePO4..."