AUTOKEYSPROTOOL CK-100 Replacement Battery 3.7V 2900mAh

AUTOKEYSPROTOOL CK-100 — 3.7V Li-Polymer Replacement Battery (755060PVT)

This 3.7V 2900mAh Li-Polymer battery replaces the original 755060PVT cell in the AUTOKEYSPROTOOL CK-100 automotive diagnostic scanner. The CK-100 is a handheld device used for vehicle key programming and diagnostic sessions. This replacement restores full power capacity when the original cell degrades or fails.

• CK-100 fit confirmed: The CK-100 uses a single-cell Li-Polymer pack with a specific BMS handshake tied to the 755060PVT form factor. The 62.50 × 50.00 × 8.00mm cell seats directly into the original battery bay without modification. The BMS communicates charge state to the scanner's firmware over the same connector pinout as the factory cell.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the CK-100 platform and confirmed BMS recognition, stable voltage delivery during active OBD communication, and correct charge termination at full capacity.
• Data export before swap: Export all saved vehicle profiles and session logs before removing the original battery. Vehicle data on the CK-100 is stored in RAM backed by the main cell — once power drops completely, that data is gone and cannot be recovered from the battery itself.

BMS boot threshold on the CK-100 after a new cell install

Li-Polymer cells ship at a storage charge of around 30–50%, which sits below the CK-100's minimum boot voltage in some firmware versions. The scanner's BMS checks cell voltage before enabling the power rail to the main board. If the cell voltage is too low, the unit appears completely dead — no screen, no response. Connect the CK-100 to its charger for at least 20–30 minutes before pressing power on a freshly installed cell.

Wireless connection dropping mid-diagnostic session

The CK-100's Bluetooth or wireless module draws a short current spike when maintaining an active vehicle link. As the battery ages and internal resistance rises, the cell voltage sags under that load — enough for the wireless subsystem to drop out even when the battery indicator still shows charge. If sessions disconnect repeatedly while battery shows mid-range, the original cell has degraded beyond usable capacity. A fresh 755060PVT cell eliminates the voltage sag — confirm the replacement reads 3.7V nominal under load before closing the case.