A faulty battery calibration attempt can cause a Google Pixel 10a to charge only until 86% before getting stuck. One user reported that after using a specific script for calibration, the device showed 18% when the software read 3884 mV. This error contradicts common advice that charging to 100% is necessary for successful calibration.
Failed calibration and system bugs
I find that improper calibration attempts often lead to more frustration than relief. A user attempting a calibration script found their phone could not reach a full charge, even after restarting the device, wiping battery stats, or wiping Dalvik. These users also tried recharging the phone without the battery inserted, but these methods failed to fix the 86% limit.
The March 2026 update introduced a significant idle drain bug that affects the Pixel 10a and other models from the Pixel 6 series through the Pixel 10 lineup. This bug prevents the CPU from entering "Deep Doze," which is Android’s low-power idle state. A process loop fires four times per second, keeping high-performance cores active. This issue persists even when you use airplane mode. Approximately 76 percent of over 2,600 respondents in an Android Authority survey reported faster drain following the March update.
| Feature | Impact of March Update Bug |
|---|---|
| Idle Power State | Prevents "Deep Doze" entry |
| CPU Activity | Persistent process loop |
| Connectivity | Modem activates repeatedly |
| Affected Models | Pixel 6 through Pixel 10 |
Effective workarounds for battery drain
You should focus on reducing secondary power consumption while waiting for a Google fix. Turning off the Always-on Display helps because the idle drain adds extra load to an already leaky baseline. You can also switch from 5G to LTE in areas with weak signals to stop the radio from increasing power to maintain a connection.
| Setting Path | Action |
|---|---|
| Settings > Battery > Battery Saver | Limit background activity |
| Settings > Display > Dark Theme | Use OLED power savings |
| Settings > Battery > Adaptive Battery | Enable usage pattern learning |
Enable Extreme Battery Saver to restrict most background processes during severe drain. If you need to perform a factory reset to resolve software glitches, ensure your phone has at least 50% charge or stays plugged into a power source. A low battery might interrupt the reset and cause errors. Will the June Android 17 release finally resolve the driver conflict?
