User Guide for EG4 ELECTRONICS models including: EG4-Indoor-All-Weather-280Ah-Battery, Indoor and All Weather 280Ah Battery, All Weather 280Ah Battery, Weather 280Ah Battery, 280Ah Battery
EG4 WallMount All Weather 280Ah Battery & WallMount Indoor 280Ah Battery. NOTE: A monthly maintenance routine should be performed to ensure the SOC.
EG4 wall mount batts (4) go from 54% SOC to 0% at night when set to go down to 30% | DIY Solar Power Forum
EG4 WallMount Indoor 280Ah Lithium Battery - EG4 Electronics
EG4® INDOOR & ALL WEATHER 280AH BATTERY SOC RECALIBRATION GUIDE PURPOSE For use after a Battery Management System's (BMS) Printed Circuit Board (PCB) replacement has been completed. The new BMS PCB will not accurately know the battery cell pack it is managing. Due to this new learning curve, the BMS will need to learn the cell pack's State of Health % (SOH = Total Remaining Capacity) and the State of Charge % (SOC = Actual Remaining Capacity). SOC% drift is a natural occurrence that can occur over time if the battery is never Top Balanced or Bottom Balanced. TOP BALANCING The EG4-LL line of batteries will automatically recalibrate the SOC to 100% whenever one cell has reached the Cell Overvoltage Alarm at 3.7V while charging. To ensure this happens, use a DC charger that is SAFE to use with Lithium-Ion batteries, or specifically a LiFePO4 (Lithium Ferrous Phosphate) battery charger. Apply a 57.0VDC charging voltage at 140A. This will ensure a safe power threshold for the battery to reach the Cell Overvoltage Alarm at 3.7V. Once this alarm occurs, the SOC will round to 100%. BOTTOM BALANCING The EG4-LL line of batteries will automatically recalibrate the SOC to 0% whenever one cell has reached the Cell Undervoltage alarm at 2.5VDC. To ensure this happens, use a 48VDC load bank or inverter. Apply a 140A discharge current to the individual battery. This will ensure a safe power threshold for the battery to reach the Cell Undervoltage alarm at 2.5VDC. Once this alarm occurs, the SOC will round down to 0%. BATTERY COMPATIBILITY EG4® WallMount All Weather 280Ah Battery & WallMount Indoor 280Ah Battery. NOTE: A monthly maintenance routine should be performed to ensure the SOC recalibration remains accurate. It is recommended to perform the recalibration once a month to ensure the battery bank remains calibrated. ©2025 EG4® ELECTRONICS, LLC. ALL RIGHTS RESERVED. VERSION 1.0 | INFORMATION SUBJECT TO CHANGE WITHOUT NOTICE.Adobe PDF Library 25.1.204