topic Re: S21+ battery problems in Solutions & Tips

S21+ battery problems

luke77777 — Wed, 18 Mar 2026 23:54:38 GMT

Just bought it 4 months ago battery only lasts 2 hours under heavy use battery health is still at 95% could anyone give me some tips

Re: S21+ battery problems

RedDogRabbit — Thu, 19 Mar 2026 00:26:49 GMT

Visit Mobile Klinik and get the battery replaced.

The S21 series was released 5 years ago, so I'm not surprised that the battery is starting to fail.

Re: Re: S21+ battery problems

luke77777 — Thu, 19 Mar 2026 01:59:46 GMT

There like 70 bucks😭

Re: S21+ battery problems

Haisley — Thu, 19 Mar 2026 12:09:04 GMT

Hi luke77777,

Let’s go through a few troubleshooting steps that may help improve performance:

Check Background Apps: Go to Settings > Battery and Device Care to see which apps are consuming the most power. Closing or limiting background activity can make a big difference.

Optimize Settings: Lower screen brightness or enable Adaptive Brightness. Turning on Adaptive Power Saving can also help extend usage.

Update Software: Ensure your device is running the latest One UI and security updates, as these often include battery optimizations.

Charging Habits: Since you’ve mostly charged at 95%, that’s good practice. Try to avoid draining the battery completely, as partial charges tend to preserve health.

Safe Mode Test: Booting into Safe Mode can help determine if a third-party app is causing excessive drain.

For additional guidance, please refer to Samsung Canada’s official support page on battery performance and troubleshooting: samsung.com/ca/support/mobile-devices/what-to-do-when-your-samsung-galaxy-device-battery-drains-faster/

If the issue persists after these steps, we recommend visiting a Samsung Authorized Service Center for a full diagnostic.

Re: S21+ battery problems

RedDogRabbit — Thu, 19 Mar 2026 20:34:32 GMT

While there are a few things that can be done to maximize the battery, it's still a 5 year old device, and if it still has the original battery, it's days are numbered.. 5 years is longer than the battery can be expected to last.

Re: S21+ battery problems

Haisley — Fri, 20 Mar 2026 13:00:29 GMT

Thanks for informing, RedDogRabbit