Lenovo Tab P11 Pro L22D2P31 Compatible Battery 3.87V 8000mAh

Lenovo Tab P11 Pro (TB-J706 / TB132F) — 3.87V Li-Polymer Replacement Battery (L22D2P31)

This is a 3.87V, 8000mAh Li-Polymer battery that replaces part number L22D2P31 in the Lenovo Tab P11 Pro tablet. It fits models TB-J706 and TB132F — the 11.5-inch Android tablet used for productivity, streaming, and document work. Install this when the original cell no longer holds a usable charge through a normal day.

• TB-J706 and TB132F fit confirmed: Both variants run the same 3.87V power rail and use the same L22D2P31 connector pinout. The BMS handshake protocol is identical across the two board revisions, so one cell covers both.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a TB132F board. The BMS accepted the cell without error flags, protection thresholds tripped correctly at the low-voltage cutoff, and the charge IC reported full capacity without fault codes.
• Fuel gauge reset after installation: After fitting this battery, run one full discharge to automatic shutoff, then charge uninterrupted to 100% without using the tablet. This gives the fuel gauge IC a clean reference point against the new cell and corrects the percentage drift that almost always appears after a swap.

Tab P11 Pro shutting down at 15–25% remaining

This happens because the OLED display and active WiFi together pull enough current to create a sharp voltage drop in the cell — a voltage cliff the BMS reads as empty. Aged original cells hit this cliff early because internal resistance has risen, making the sag worse under combined load. A new cell has lower internal resistance, so the voltage stays higher under the same draw. After one full discharge-recharge calibration cycle, the fuel gauge maps the actual capacity curve and the premature shutdowns stop.

Fast charging unavailable after battery replacement

Some Tab P11 Pro units show fast charge as unavailable or grayed out immediately after a battery swap. The USB-PD negotiation layer waits for one completed charge cycle before re-enabling higher wattage delivery on a new cell — this is a firmware-level safeguard, not a fault. Plug in the original charger, let it run from low to full without interruption, and fast charge availability returns on the next session. Do not switch chargers mid-cycle during this first run.