SAMSUNG GALAXY
How to limit charging to 80% on a Samsung Galaxy phone
In short
Open Settings, Battery, Battery protection and switch it on. Choose Maximum and drag the slider to the level where charging should stop, for example 80%. Basic instead stops at 100% and only starts charging again when the battery drops to 95%.
Lithium-ion batteries wear faster when they sit at 100% for hours, for example overnight or on a desk charger all day. One UI can stop charging early so the battery keeps more of its capacity over the years.
5 of 6 steps show a real screenshot from our Galaxy S26.
Steps
- 1
Open Battery
Open Settings and tap Battery.
- 2
Open Battery protection
Scroll down the Battery page and tap Battery protection. It sits below Power saving and Background usage limits. On our Galaxy S26 it read Basic.
- 3
Switch Battery protection on
Tap the top switch so it shows On. The options below become available.
- 4
Choose Basic or Maximum
Basic: when the battery reaches 100%, charging stops until the level drops to 95%, then starts again. Maximum: charging stops at a level you set. Pick Maximum for a real limit.
- 5
Set the limit
With Maximum selected, the page says Your battery will stop charging when it reaches 80%, and the slider offers 80%, 85%, 90% and 95%. Drag it to the level you want. Samsung names 80%, 85% and 90% as levels that help reduce battery wear.
- 6
Check Sleep time protection
Further down, Sleep time protection stops charging at 80% while you sleep and finishes to 100% just before you wake up. Leave it on if you need a full battery in the morning; switch it off for a strict limit overnight. Samsung says it learns your sleep times over about 2 weeks.
If you do not see this option
- There is no Maximum or Basic choice Samsung says the three options (Basic, Adaptive and Maximum) came with One UI 6.1. On older software the only option is a fixed limit of 85%. Source: Galaxy Battery protection feature in One UI 6.1
- You also see Adaptive Samsung says Adaptive uses Maximum while you sleep and switches to Basic before you wake, based on your usage. It may not work well with irregular sleep. Source: Galaxy Battery protection feature in One UI 6.1
- You cannot pick the limit Samsung says choosing the Maximum limit (80, 85, 90 or 95%) came with One UI 7.0. Older software only offers a fixed limit. Source: Protect your battery for longer and safer use (Battery protection)
- You want a quick switch for it Samsung says you can add Battery protection to the quick panel: swipe down from the top right, tap the Edit icon, Add a control, and Battery protection under System apps. Source: Protect your battery for longer and safer use (Battery protection)
If this does not work
- Basic still lets it reach 100% Samsung says Basic stops at 100% and starts again at 95%. Maximum stops at the level you set; Samsung names 80%, 85% and 90% as levels that reduce wear.
- It charged to 100% overnight anyway Samsung says Sleep time protection tops the battery up to 100% just before you get up. For a strict limit every night, choose Maximum.
- It went back to Basic Samsung says Sleep time protection can switch to Basic if you turn off Customisation Service consent, or in multi-user mode.
- The level dips below the limit? Samsung says the battery may drop about 2% below the Maximum limit before charging resumes, and that this is not an error.
- It drains a little on a wireless pad? Samsung says a wireless or low-output charger may not keep up with what the phone uses, so the battery can drain slightly while plugged in.
Good to know
Before a long day when you need every percent, choose Basic, which Samsung says charges to 100%.
Charging settings, on the same Battery page, holds the Fast charging switch.
If the battery runs down too fast as well: Samsung Galaxy battery draining fast? 6 fixes.
About this guide
- Device
- Android
- Shown on
- Samsung Galaxy S26 (SM-S942N, Korean model), One UI 9.0, Android 17 (build CP2A.260605.016.S942NKSU5BZJB)
- App
- Settings
- Path
- Settings › Battery › Battery protection
- Real screenshots
- 5 of 6 steps
- Checked
- November 2026
- Sources
- 3 official, linked below
The screenshots are from a Samsung Galaxy S26 with One UI 9.0 and Android 17, in Dark mode. Samsung says the names of menus and how things work can change with the phone and software version. We picked Maximum for one picture and set it back to Basic. There was no Adaptive option on our S26.
Sources
Links checked November 2026. Menus and features can change with updates.What to do next
Make your Galaxy battery last Step 5 of 6
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