On supported realme phones, realme UI shows a Maximum capacity figure on its Battery health page, and realme is unusually clear about what the readings mean. The same page holds Charging Limit and Smart charging. Here is how to check your battery, how to read the result and how to set up charging protection.
Check Maximum capacity in realme UI
- Open Settings.
- Tap Battery.
- Tap Battery health.
- Read Maximum capacity.
Maximum capacity is what your battery can hold today compared with when it was new. realme lists models that support the readout, including the realme 11 Pro+, GT 6, GT 6T, GT 7 Pro, GT7, GT7T, GT8 Pro, C73 5G, 15x 5G, P4 Power 5G and NARZO 80 Lite 5G. Other models may show it after an update, but if your phone has no Battery health page or no Maximum capacity line, it does not support the readout.
What the readings mean
- 80% or higher: no prompt. The battery is in normal condition.
- Below 80%: realme says the battery's health has dropped significantly and battery life will drop significantly too. It recommends a check or replacement at a realme service center.
- Calculating: the phone needs more use before it can show a value. Keep using and charging it normally.
- Data acquisition failed: the phone cannot read the battery information. realme says this can mean an abnormal battery contact or a non-official battery, and recommends a service center visit.
On realme UI 6.0, Battery Health 2.0 adds a Learn More option when health is below 80%, with more technical information about the battery. For how to decide on a replacement, read when to replace a phone battery.
We could not find official confirmation that realme UI shows a lifetime charge cycle count. See our cycle count guide for what cycles mean and how to track them.
Turn on Charging Limit (realme UI 6.0)
- Open Settings > Battery > Battery health.
- Turn on Charging Limit.
- Charging now stops at 80%.
realme UI 6.0 also adds battery expansion prevention: if the phone stays on the charger for a very long time, such as 7 or 14 days in a row, it reminds you to turn on the limit and caps charging at 80%. To lift that cap, unplug the phone and leave it unplugged for an hour.
Use Smart charging or Optimized night charging
If you charge overnight but want 100% when you wake, use realme's night charging protection instead of a hard limit:
- realme UI 5.0, 6.0 and 7.0: Settings > Battery > Battery health > Smart charging (also called Wise charging). It pauses at 80% during long charging sessions and resumes before you usually unplug.
- realme UI 4.0: search Settings for Optimized night charging. It holds the charge at 80% overnight and completes it to 100% by morning.
Both reduce the hours the battery spends at 100%, one of the main causes of wear. Read our calm answer on overnight charging for when it matters most.
Why the number can change
Maximum capacity is an estimate the phone builds up from how the battery charges and discharges, so it is normal for it to move a point or two over a few weeks, and to show Calculating on a new phone or after a reset. A slow, steady fall over months is normal ageing. A sudden big drop, or a phone that dies early while still showing a high figure, is worth a service center check. Heat speeds up the fall more than anything else: a phone that often charges hot, or sits at 100% in a warm car, will lose capacity faster than one kept cool and between about 20 and 80%.
Charge cycles also matter. One cycle is 100% of capacity used in total, so two charges from 50 to 100% count as one. Most phone batteries are rated to keep around 80% of their capacity for several hundred to over a thousand cycles, which is why realme's 80% line is where many owners start to notice shorter battery life.
Codes and diagnostics
Lists of realme secret codes include *#899# (an engineering and after-sales test mode that can include battery and charger hardware checks on some models), *#800# (feedback and logs) and *#6776# (software version). realme does not document any of them as a battery health check, and they vary by model and realme UI version. For a capacity figure, the Battery health page is the reliable option.
Tips for a healthy realme battery
- Turn on Charging Limit if 80% lasts your day. Read the 20-80 rule.
- Avoid gaming while fast charging, which stacks two heat sources. See why your phone gets hot while charging.
- Use an official charger and battery. realme notes a non-official battery can stop the health readout working.
How bCare helps on realme
Not every realme shows Maximum capacity, and the ones that do show a single number. bCare's battery health score measures your battery's real capacity in mAh during normal 20 to 80% charges, compares it with the design capacity, and shows charge cycles and a 14-day trend on any realme or NARZO phone. If your model has no Charging Limit, the 80% charge alarm rings when you reach 80%, and the overheat alert warns you when the battery runs hot.