i alredy taken it apart, when i check the voltage of the battery it shows around 3,6 v, battery alredy shows 0% so idk if 3,6 v is result of battry having no charge left or broken battery, if i can somhow diagnose problem further, i can do it, i just dont know how or where and what i can check.
crwdns2934109:0crwdne2934109:0
Hey @jan54210!
Okay, so your Redmi 10 shows 3.6V battery voltage but won't charge and stays at 0%. You've taken it apart - good start. This is actually a common issue and there are a few things to check:
3.6V is basically a dead Li-ion battery. Normal range is 3.7-4.2V. Below 3.6V, the Battery Management System (BMS) often refuses to charge because it thinks the battery is damaged.
What to check/diagnose:
1. Charging Port/Board
Since the battery voltage is present (3.6V) but not charging, the issue is likely the charging circuit on the motherboard or the charging port flex cable:
2. Charging IC/PMIC
The Power Management IC might be faulty. Common symptoms:
3. Battery BMS Protection
The battery's internal protection circuit might have locked out because voltage dropped too low. You can try:
4. Battery Connector/Flex
Check the battery connector on the motherboard - any corrosion or bent pins will prevent charging.
If you have access to a variable power supply:
This can "wake up" the battery's BMS if it's in protection mode.
Based on Redmi 10 common issues - it's usually the charging port flex cable or the PMIC (charging IC) on the motherboard. Check those first before replacing the battery.
Let me know if you need further Help.
Best Wishes
Marvin
crwdns2934105:0crwdne2934105:0
1. but how exactly, where to put probes to check those, i think i got the charging port cause i saw 5 v,when plugged (idk if i checked in correct place),no visible corrosion, idk whe to put probes to check flow, 2. phone dosn recognise charger, voltage present (i checked in the same placee as before) its still 3,6 v 3. i dont know how to do it (video link would be helpful) 4. no corrosion visable. on a motherboard i see, little dots where i think purpose of are to put pobes in, when i check in diffrent combinations i see 3,6 or 3,4 v, i dont know if this information helps but im doing my best here, from eqiupment i have buisness toolkit, heating mat, the tool that blows hot air up to 450C (idk english name for it), and soldering iron, i dont have variable power supply, but if you have or know any good one you can tell me cause i plan to buy one in the future
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