Apple iPad Pro 9.7 A1664 Replacement Battery 3.82V 7300mAh

Apple iPad Pro 9.7 — 3.82V Li-Polymer Replacement Battery (A1664)

This is a 3.82V, 7300mAh lithium-polymer battery for the Apple iPad Pro 9.7. It fits models A1673 and A1675 alongside the primary A1664 designation. Install it when the original cell no longer holds a usable charge or has swollen and needs safe removal.

• iPad Pro 9.7 model variants: The A1673, A1675, and A1664 board numbers cover the Wi-Fi and Wi-Fi + Cellular versions of the iPad Pro 9.7. All three share the same battery connector, voltage rail, and BMS handshake, so one cell covers the full 9.7-inch Pro lineup from this generation.
• Bench tested on actual hardware: We ran this cell on an A1664 unit and confirmed the BMS accepted the charge cycle without a low-voltage rejection flag. The charge IC brought the cell up from a resting state cleanly, and the protection circuit held within the expected cutoff window on a full discharge pass.
• Post-swap fuel gauge reset: After fitting this battery, run one full discharge to automatic shutoff, then charge uninterrupted to 100% before unplugging. The fuel gauge IC was calibrated to the old cell — skipping this step leaves it reading against wrong baseline data, producing incorrect percentage readings from day one.

iPad Pro 9.7 shutting down at 15–25% remaining

The iPad Pro 9.7 pulls simultaneous load from the Retina display backlight, Wi-Fi radio, and Apple A9X processor during active use. Under that combined draw, a freshly installed cell can hit a brief voltage sag that crosses the BMS undervoltage threshold — even though the reported percentage still reads above zero. The shutdown is a protection-circuit response, not a faulty cell. One full discharge and recharge cycle recalibrates the fuel gauge IC against the new cell's actual voltage curve and eliminates most unexpected cutoffs at this range.

Fast charging unavailable after battery swap on iPad Pro 9.7

If the device reverts to standard 5W charging after a battery replacement, the USB-PD negotiation layer needs a completed charge cycle to re-establish communication with the charge IC. Connect the iPad to a USB-PD charger rated at 18W or higher and allow it to charge from a low state fully to 100% without interruption. On the next charge session, USB-PD should negotiate correctly and resume faster input. If the issue persists after two full cycles, verify the charge port flex cable is seated correctly, as a loose connector mimics a USB-PD handshake failure.