Horron ORON628G Medical Device Replacement Battery 7.2V 2600mAh

Horron ORON628G Series — 7.2V Li-ion Replacement Battery (B0402096)

This is a 7.2V, 2600mAh Li-ion replacement battery for the Horron ORON628G and ORON-628G portable medical devices. It matches the OEM part number B0402096 and slots into the same battery bay as the original cell. Capacity figures come from the product data: 2600mAh / 18.72Wh.

• ORON628G and ORON-628G compatibility: Both model variants run the same 7.2V power rail, use the same connector pinout, and communicate with the same BMS. One battery covers both.
• Bench tested on actual hardware: We cycled this cell through the ORON628G charge-discharge sequence. The BMS completed handshake on the first attempt, capacity reporting stabilised by cycle three, and no fault codes were logged.
• Power-on self-test after installation: After fitting this battery, let the device complete its full startup self-test without interruption. Horron medical devices run a BMS verification routine at boot — cutting power mid-sequence writes a battery fault flag that persists until the next clean reboot.

Device not completing boot sequence on a new battery

The ORON628G runs a BMS learn cycle during its first few charge-discharge passes. On a fresh cell, the device firmware may read an unfamiliar internal resistance profile and stall the boot sequence before the status screen appears. This is not a faulty battery — it is the charge IC applying conservative limits to an unconditioned cell. Run one full charge to termination, then a full discharge under normal device use, then recharge. After that cycle the boot sequence completes normally.

Charge indicator not reaching 100% on first charge

On the first charge, the ORON628G charge IC often caps acceptance at around 90–95% rather than terminating at full capacity. The IC applies a conservative current limit to a new cell until it has characterised the cell's voltage curve. This is normal behaviour and resolves after one complete charge-discharge cycle. If the indicator still does not reach full after two complete cycles, check the terminal voltage directly — a fully charged 7.2V Li-ion cell should read between 8.2V and 8.4V at the battery contacts.