u/Iamlisten1ng

Any using LiFePO4 inverter/UPS? Need.a 2KWB/1500W power backup solution.

Any using LiFePO4 inverter/UPS? Need.a 2KWB/1500W power backup solution.

TL;DR - Need closed loop LiFePO4 2000WH/1500w inverter/UPS solution under ₹60K. Can;t find anything. Seeking advice.

I need a LifePO4 based 2KWH/1500w power backup solution with a max budget of ₹60K.

I've read closed loop systems, where BMS share SOC (state of charge), voltages, temps, etc with the inverter, are better, but I can’t find a single product with confirmed technical proof of BMS→inverter closed‑loop data flow. Some provide wifi and bluetooth connectivity but it says nothing between battery and inverter data sharing

Not able to decide what to buy. I'd appreciate any advise.

I've looked at:

  • In build battery
    • Su-vastika ESS/UPS 2500 - Has wifi, but not sure if BSM actually connected to inverter
    • Electrent ESS 2500 - couple of posts of positive feedback and low noise
    • Genus MaxiLion 2400VA - bad feedback on amazon, very loud
    • Microtek i‑LITHIUM 1500 SW - underpowered
    • UTL Gamma+ LiON 1200 - underpowered
    • Ecoflow Delta & River series - underpowered
  • Evaluated LifePO4 compatible UPS’ from almost all brands available in india, none of them have a CAM or RS485 port. at least in the budget I’m looking at.

Closed-Loop: BMS shares real-time telemetry (battery state of charge, temp and voltage) with the inverter, usually over RS485 or CAN, enabling dynamic charge and discharge adjustments that guarantee optimal battery health and safety without relying on blind, static voltage thresholds.

Open-Loop: The inverter lacks active communication with the BMS, strictly depending on hardcoded voltage parameters to estimate battery status, resulting in imprecise power management that cannot dynamically adapt to real-world capacity or temperature changes.

Ref: https://intelligentcontrols.io/blogs/technical-articles/battery-communication-closed-loop-vs-open-loop-communications

u/Iamlisten1ng — 6 days ago