AGM Glory G1 SE Replacement Battery 3.8V 6200mAh Li-Polymer

AGM Glory G1 SE — 3.8V Li-Polymer Replacement Battery (1ICP/10/60/70)

This is a 3.8V, 6200mAh Li-Polymer battery for the AGM Glory G1 SE, Glory Pro, and Glory G1 rugged smartphones. It replaces OEM part number 1ICP/10/60/70. Capacity figure is taken from the product specification — 23.56Wh.

• Glory G1 SE, Glory Pro, and Glory G1 compatibility: These three models share the same battery bay dimensions, 3.8V nominal voltage rail, and BMS handshake protocol. The connector pinout is identical across the trio, so one cell covers all three without modification.
• Bench tested on actual hardware: We cycled this cell through a full discharge and charge sequence on the Glory G1 SE. The BMS accepted charge current on the first connection, completed a full cycle without thermal cutoff, and the fuel gauge IC reached 100% without interruption.
• First-cycle fast charge tip for rugged AGM units: On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC recalibrate against the new cell's discharge curve before high-current fast charging pushes current into an uncalibrated cell.

Why the Glory G1 SE reports wrong battery percentage after a cell swap

The fuel gauge IC on AGM rugged phones stores a discharge curve from the original cell. When you swap in a new cell, the IC is still reading against that old curve — so the percentage displayed does not match actual charge state. This mismatch is most visible at the top and bottom of the range, where the old curve diverges most from the new cell's characteristics. One full discharge down to automatic shutdown, followed by a full uninterrupted charge to 100%, resets the coulomb counter reference. After that cycle, percentage accuracy tightens noticeably.

Sudden shutdown at 20–30% on the replacement cell

This is a voltage cliff failure — under modem transmission load or peak screen brightness, the new cell cannot hold voltage above the BMS cutoff threshold, even though the fuel gauge still shows charge remaining. The root cause is the fuel gauge IC reading a calibration curve that does not match the new cell, so it reports 25% when actual usable capacity is already exhausted. Run one complete discharge cycle without fast charging — let the phone shut down naturally, then charge uninterrupted to 100%. After that, the coulomb counter recalibrates and the shutdown threshold aligns with the real voltage floor of the new cell, typically around 3.2–3.3V under load.