Gama Sonic GS-97F-GE LiFePO4 Replacement Battery 3.2V 3600mAh

Gama Sonic GS-97F-GE / GS-97N / GS-104 — 3.2V LiFePO4 Replacement Battery (XML-323-GS)

This 3.2V, 3600mAh LiFePO4 cell replaces the original rechargeable battery in Gama Sonic solar light fixtures including the GS-97F-GE, GS-97N, GS-104, and GS-103. It stores the charge captured by the fixture's solar panel during the day and powers the light through the night. Capacity is 3600mAh (11.52Wh) — use the figure from the product data, not estimates from third-party sources.

• GS-97F-GE, GS-97N, GS-104, and GS-103 compatibility: These fixtures share the same battery bay dimensions, 3.2V voltage rail, and BMS handshake protocol. The XML-323-GS cell fits all of them without modification to the holder or wiring harness.
• Bench tested on actual hardware: We cycled this cell through full solar-simulated charge and discharge runs. The BMS held the charge cutoff at the correct upper voltage and protected the cell against over-discharge at the low-voltage threshold — both critical for outdoor fixtures left unattended through seasonal changes.
• Panel angle before installation: Adjust the solar panel face to point directly at the sun's path — not just skyward. The fixture's BMS has a minimum input threshold; indirect or partial-shade light generates insufficient current to trigger charging, even on a bright day. Get the angle right before assuming the battery is at fault.

Why the GS-97F-GE dims or shuts off before dawn

LiFePO4 cells in solar fixtures operate on a fixed discharge curve. If the panel didn't push enough current during the day — due to cloud cover, shading, or a poor angle — the cell starts the night at 70–80% capacity instead of full. The fixture's controller doesn't know this; it drives the LED at normal output until the cell voltage drops below the cutoff threshold, then the light shuts off. Replacing a degraded cell that can no longer hold 3600mAh is the fix, but first confirm the panel is actually delivering adequate charge current.

New battery installed but the light still won't turn on at night

A fresh LiFePO4 cell ships at a storage voltage — typically around 3.0V — which may sit below the controller's operating threshold. The fixture needs a full daytime charge cycle before it will activate the LED output circuit. Place the unit in direct sunlight for a full day, then check at dusk. If the light still doesn't activate, measure the cell voltage with a multimeter: a healthy, charged LiFePO4 cell should read between 3.2V and 3.35V.