About this replacement
Apple MacBook Air 11" A1465 Mid-2013 — 7.6V Li-Polymer Replacement Battery (A1495)
This is a 7.6V, 5100mAh (38.76Wh) lithium-polymer battery for the Apple MacBook Air 11-inch A1465, Mid-2013 models. It fits both the Core i5 1.3GHz and Core i7 1.7GHz variants, including MD711LL/A. OEM part numbers A1495 and 020-8084-A both apply to this cell.
- A1465 Mid-2013 compatibility: The Core i5 and Core i7 Mid-2013 A1465 boards share the same connector pinout, voltage rail, and BMS handshake protocol. Both pull from this same cell without modification.
- Bench tested on actual hardware: We ran this cell through charge-discharge cycles on an A1465 board. The BMS negotiated correctly, SMC recognised the battery, and charge current stabilised at the expected rate through each phase.
- SMC learn cycle after install: After fitting, run the MacBook down to automatic hibernate cutoff, then charge uninterrupted to 100% without interruption. This resets the SMC battery learn cycle and clears the inaccurate health warning that appears after every cell swap.
Why macOS reports poor battery health immediately after a cell swap
The MacBook Air's SMC and macOS store cycle count and health data from the previous cell in EEPROM. When a new cell is installed, that stored data does not match the fresh chemistry, so macOS flags the battery as degraded or unknown before any cycles have run. This is a data mismatch, not a fault with the replacement cell. Running one full discharge-to-hibernate and then an uninterrupted full charge gives the SMC enough data to rewrite its baseline and return an accurate health reading.
MacBook shuts down at 20–30% charge shown on the status bar
This happens when the fuel gauge IC has not yet calibrated against the new cell's actual discharge curve. The percentage shown reflects the old cell's voltage map, so the system hits a voltage cliff — where the cell can no longer sustain the combined CPU and display load — well before the gauge reaches zero. The fix is the same SMC learn cycle: discharge fully to hibernate, then charge to 100% without interruption. After two to three full cycles, the fuel gauge IC recalibrates and the shutdowns stop.