XTOOL TP150 TPMS Diagnostic Scanner Replacement Battery 3.7V 2600mAh

XTOOL TP150 / A30 PRO Diagnostic Scanner — 3.7V Li-Polymer Replacement Battery (KPL604193)

This 3.7V 2600mAh Li-Polymer battery replaces part number KPL604193 in the XTOOL TP150 TPMS Diagnostic Tool and A30 PRO Diagnostic Scan Tool. Both are handheld automotive scanners used to read, diagnose, and reset tire pressure monitoring system sensors across a wide range of vehicles. Dimensions are 94.50 × 39.70 × 5.50mm — confirm these against your existing cell before ordering.

• TP150 and A30 PRO compatibility: Both models run the same 3.7V power rail and use an identical physical cell format with the same BMS handshake protocol, which is why they share one part number. The connector pinout and protection circuit board are matched to KPL604193 from the factory.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the TP150 platform. The BMS accepted the cell without fault codes, the protection circuit tripped correctly at low-voltage cutoff, and the scanner reached full operating voltage without requiring a manual reset.
• Pre-swap data export on XTOOL scanners: The TP150 and A30 PRO store vehicle profiles and TPMS sensor records in memory that loses power the moment the battery is disconnected. Export all saved sensor data and vehicle profiles to the companion app or a PC before pulling the old cell — there is no recovery path once the battery is out.

Why the TP150 won't boot after a battery swap

A fresh Li-Polymer cell ships at storage charge, typically around 3.6–3.7V, which sits right at or below the TP150's minimum boot threshold. The scanner's boot sequence draws a short high-current spike that the BMS may flag as an undervoltage event, causing an immediate shutdown before the home screen loads. This is not a faulty battery or a compatibility issue — it is the protection circuit doing its job. Charge the replacement cell fully to 4.2V through the scanner before attempting to use it.

Bluetooth link dropping mid-TPMS session

When a degraded battery sags below roughly 3.5V under load, the TP150's Bluetooth radio is one of the first subsystems to lose stable voltage. The scanner may still show a partial charge indicator on screen while the wireless link to the TPMS sensor drops repeatedly. The display driver operates at a lower voltage threshold than the radio, so the screen staying on is not a reliable sign that the battery has enough headroom. If the link drops consistently during sensor reads, check battery voltage under load — anything below 3.5V mid-session points to a cell that needs replacement.