Meditch G3H Compatible Battery 11.1V 2600mAh Li-ion

Meditch G3H — 11.1V Li-ion Replacement Battery

This is an 11.1V 2600mAh (28.86Wh) Li-ion replacement battery for the Meditch G3H portable diagnostic instrument. It fits directly into the G3H battery bay and restores power after the original cell has degraded through repeated charge cycles. Voltage and capacity match the G3H power rail requirements.

• G3H platform fit: The G3H draws a stable low-to-mid current profile during diagnostic sessions. This replacement matches the original 11.1V three-cell configuration, so the device charge IC and BMS handshake proceed without a chemistry mismatch flag.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a controlled load bench. The BMS passed overcurrent and undervoltage cutoff thresholds correctly, and the protection circuit disengaged cleanly at full charge termination voltage.
• Power-on self-test protocol: After installing this battery, let the G3H complete its full startup sequence without interruption. Medical devices run a BMS verification check at boot — cutting power during this window triggers a false battery fault that sticks until the next clean reboot.

Why the G3H reports a battery fault after a confirmed full charge

The G3H BMS stores a learned capacity profile from the previous cell. When a new cell is installed, the BMS compares the incoming charge curve against that stored baseline. A fresh Li-ion cell charges slightly differently in its first cycle — the internal resistance is higher and the charge acceptance curve is steeper — so the BMS can flag it as out-of-spec. Running one complete charge-to-discharge-to-charge cycle resets the learned profile. After that cycle, the fault clears and the battery indicator reads normally.

Charge indicator stuck below 100% on the first charge

On the first charge, the G3H charge IC applies a conservative current limit to an unrecognised cell. This is intentional — the IC holds back until it verifies the cell's temperature response and voltage rise rate. The display can show 90–95% for an extended period before the final top-up stage begins. Do not interrupt the charge. Let the cycle complete fully; the indicator will reach 100% once the IC confirms the cell is within safe termination parameters.