The S0-20 battery, after being fully charged, powers 3~4 hours of talk time and 30~40 hours of standby time. The actual battery time depends on your usage, but if the battery runs out significantly faster (such as after a couple of minutes of talk), there might be an issue with the S0-20 firmware or the battery. Follow these steps:
- Upgrade S0-20 firmware to the latest version.
- If the firmware upgrade does not work or the firmware has already been upgraded, the battery might be the problem.