Gama Sonic GS-94C-D Compatible Battery 3.2V 7200mAh LiFePO4

Gama Sonic GS-94C-D — 3.2V LiFePO4 Replacement Battery (GS32V60)

This is a 3.2V LiFePO4 rechargeable battery rated at 7200mAh (23.04Wh), built to replace the original cell in the Gama Sonic GS-94C-D solar light. It stores energy captured by the solar panel during daylight and delivers that power to the LED array after dark. When the original cell no longer holds a charge, this replacement restores normal operation.

• GS-94C-D solar light compatibility: The GS-94C-D uses a single LiFePO4 cell at 3.2V nominal. LiFePO4 chemistry suits solar applications because the flat discharge curve keeps LED output consistent as the cell drains, unlike Li-ion which dims progressively from full to empty.
• Bench tested on actual hardware: We cycled this cell through solar-simulated charge and full LED-load discharge. The BMS maintained stable output through the discharge curve and cut off cleanly at the low-voltage threshold without requiring manual reset.
• Panel angle at installation: Mount the panel so it faces direct sunlight — LiFePO4 cells have a minimum input threshold the BMS must see before accepting a charge. Ambient or indirect light typically delivers insufficient current to cross that threshold, so the cell will not charge even on a bright overcast day.

Why the GS-94C-D stops charging after a short stretch of cloudy weather

LiFePO4 cells can enter a deep-discharge state if the solar panel fails to deliver enough current over several overcast days while the LED load continues drawing power each night. Once the cell voltage drops below roughly 2.5V, the BMS locks out charging to protect the cell. A small solar panel — typically outputting 100–300mA in full sun — cannot recover a deeply discharged LiFePO4 cell on its own. In that state, the battery needs replacement rather than further solar exposure.

Light dims significantly partway through the night even after a full sunny day

This symptom usually means the cell is partially charged, not that it is faulty. A 7200mAh LiFePO4 cell requires sustained, direct solar input — panel shading from a nearby fence, tree, or roofline during peak hours can cut charging current by 50% or more. Check that no shadow crosses the panel between 10am and 2pm, when solar irradiance is highest. If full direct-sun days still produce early dimming, verify the panel surface is clean, as dust and bird debris reduce output measurably.