About this replacement
Apple iPad Pro 12.9-inch 1st Gen — 3.73V Li-Polymer Replacement Battery (6712-6700)
This is a 3.73V, 8820mAh (32.9Wh) lithium-polymer battery for the Apple iPad Pro 12.9-inch first generation, released in 2015. It fits models 1823, A1474, A1475, and A1476, among others. Part number 6712-6700 matches the original cell form factor and connector.
- iPad Pro 12.9-inch 1st Gen platform: These models share the same 3.73V cell architecture, connector orientation, and BMS handshake protocol — the charge IC on the logic board negotiates directly with the battery's protection circuit, so voltage and communication specs must match exactly.
- Bench tested on actual hardware: We cycled this cell through charge and discharge on an iPad Pro 12.9-inch board. The BMS accepted the cell without fault codes, and the charge IC completed a full CC/CV cycle without interruption.
- Fuel gauge calibration after install: After fitting this battery, run the iPad down to automatic shutoff under normal use, then charge uninterrupted to 100%. This forces the fuel gauge IC to re-calibrate against the new cell's actual capacity curve and corrects the percentage drift that appears immediately after a swap.
iPad Pro 12.9-inch shutting down at 15–25% remaining
The 12.9-inch display, combined with active WiFi and background app refresh, creates a combined load spike that the fuel gauge IC reads as a voltage cliff. When the gauge — still calibrated to the old cell — sees voltage drop sharply under that load, it triggers a protective shutdown even though charge remains. This is not a cell fault. Run one full discharge-to-shutoff cycle followed by an uninterrupted charge to 100%, and the gauge recalibrates to the new cell's actual voltage curve. After that cycle, shutdowns at 15–25% should stop.
Fast charging unavailable after battery swap
The iPad Pro 12.9-inch uses USB-PD negotiation to enable fast charge — the charge IC checks for a successful prior charge cycle before the device requests higher wattage from the adapter. Immediately after a battery swap, the IC has no cycle history for the new cell and defaults to standard 5V charging. Complete one full charge cycle from low to 100% without interruption. After that cycle, connect a USB-PD compliant adapter and the device will re-negotiate for the higher voltage rail.