About this replacement
Apple iPad Pro 11-inch (2nd Gen) — 3.82V Li-Polymer Replacement Battery (A2387)
This is a 3.82V, 10500mAh (40.11Wh) Li-Polymer battery for the Apple iPad Pro 11-inch 2nd generation. It fits models A2378, A2379, A2461, and A2462, among others. The original Apple part number for this cell is A2387.
- A2378 / A2379 / A2461 / A2462 platform fit: These models share the same battery footprint, connector pinout, and BMS handshake protocol. The 3.82V nominal rail matches the charge IC specification across all four variants, so one cell covers the full 2nd-gen 11-inch lineup without modification.
- Bench tested on actual hardware: We ran this battery through charge and discharge cycles on an iPad Pro 11-inch 2nd-gen unit. The BMS accepted the first charge cycle cleanly, charge IC handshake completed without error flags, and the cell held voltage within spec across display and CPU load.
- Fuel gauge recalibration after swap: After installation, run one full discharge to automatic shutoff, then charge uninterrupted to 100%. This resets the fuel gauge IC calibration against the new cell and corrects the inaccurate percentage reading that almost always appears immediately after a battery swap.
Tablet shutting down at 15–25% remaining after battery replacement
This happens because the fuel gauge IC is still calibrated to the voltage curve of the old, degraded cell. When the new cell hits the voltage range the IC previously associated with empty, it triggers a shutdown — even though actual capacity remains. The combined load of the ProMotion display and Wi-Fi creates a brief voltage sag that pushes the reading past the IC's cutoff threshold. Run one full discharge to automatic shutoff followed by an uninterrupted charge to 100% and the shutdowns stop.
Fast charging not available after battery swap
iPadOS requires one complete accepted charge cycle before it fully negotiates USB-PD fast charging on a new cell. Until that cycle completes, the charge IC defaults to a conservative current limit. Connect to the original Apple 20W or 30W USB-C adapter and let the device charge from near zero to 100% without interruption. After that single cycle, USB-PD negotiation resumes at the full rate.