About this replacement
XTOOL EZ300 Pro / i80 Pad — 7.4V Li-Polymer Replacement Battery (PL6065100-2S)
This is a 7.4V 3800mAh Li-Polymer replacement battery for the XTOOL EZ300 Pro and i80 Pad automotive diagnostic scanners. It replaces OEM part PL6065100-2S and fits the physical cell bay on both models. Use it to restore full scanning capability when the original cell no longer holds a charge.
- EZ300 Pro and i80 Pad compatibility: Both models share the same 7.4V two-cell Li-Polymer pack format, identical BMS handshake protocol, and the same physical connector. One battery covers both platforms without modification.
- Bench tested on actual hardware: We cycled this cell through full charge and discharge passes on the EZ300 Pro. The BMS reported accurate state-of-charge, protection circuits tripped correctly at low-voltage cutoff, and charge acceptance was clean from the first cycle.
- Pre-swap data export on the EZ300 Pro: Vehicle profiles and saved ECU data on the EZ300 Pro are held in RAM backed by the main battery. Pull those records to a USB drive or sync to XTOOL's cloud before you remove the old cell — pulling the battery without exporting first wipes that data permanently.
Why the EZ300 Pro drops its wireless link during live data streaming
Live data streaming pushes the EZ300 Pro's Wi-Fi or BLE radio at sustained load while the CPU is also processing OBD-II frames. At battery voltages below roughly 6.8V, the power rail feeding the wireless module sags under that combined draw. The scanner stays on, but the radio resets — dropping the vehicle session mid-stream. Replacing a degraded cell restores the headroom that keeps the radio stable through long diagnostic sessions.
EZ300 Pro won't power on after battery swap
A fresh replacement cell ships in a storage-charge state — typically around 3.6V per cell, or 7.2V total. The EZ300 Pro's boot firmware requires a minimum threshold closer to 7.4V before it will start the power-on sequence. If the scanner shows nothing after a swap, charge the new battery for at least 30 minutes before pressing the power button. Once the pack reads above 7.4V, the scanner boots normally.