Google Pixel 4a (4G) battery details are as follows (not to be confused with the Pixel 4a 5G, which has a larger ~3885 mAh battery).
The Pixel 4a uses a non-removable lithium-polymer (Li-Po) battery with a typical capacity of 3140 mAh (rated/minimum often listed around 3080 mAh). It is designed for all-day use under normal conditions and pairs with Google's Adaptive Battery feature, which learns your app usage patterns and restricts power to infrequently used apps to extend runtime.
The phone supports wired fast charging only (no wireless charging). It ships with (or is compatible with) an 18 W USB-C Power Delivery (PD 2.0) charger. Real-world tests (e.g., GSMArena) showed roughly 45% charge in 30 minutes and a full charge in about 1 hour 37 minutes with the included charger.
In early 2025, Google released a software update as part of the Pixel 4a Battery Performance Program. On some devices (primarily those with certain Lishen battery cells), the update reduced usable capacity and charging performance for safety reasons related to potential overheating/fire risk. Affected users were offered free battery replacements or other options (the program had a registration window). Devices with Amperex (ATL) batteries were generally unaffected. Check Google's official support pages for eligibility if you still use a Pixel 4a.
These are the original factory specifications. Actual battery health and runtime depend on age, usage, temperature, software version, and whether any safety update has been applied.
| Specification | Detail |
|---|---|
| Type | Li-Po (Lithium-Polymer) |
| Capacity | 3140 mAh (typical) |
| Removable | No |
| Charging | 18 W wired, USB PD 2.0 |
| Wireless charging | No |
| Port | USB Type-C |
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