for the safety of your earbuds must have charge control, new model earbuds need charge controller

@@fenlxx821 The lithium-ion battery in the charging case typically 3.7V is normally boosted to 5V using a DC-DC converter IC. This voltage is then used by a linear charger in the earbud for battery charging. However, even as the earbud battery voltage rises during charging, it always remains lower than 5V. important is how to locate polarity + and -

@lienchen12 the problem is that I can't locate + and -, because the multimeter always show zero in these specifics earphones

@@fenlxx821 look for the sign ( - or + ) on the left side of digital multi meter, if shows nothing.. that’s positive, if shows on left side screen - , it means your test probe was on the wrong side of + and -

@@fenlxx821 don’t worry about the zero volts,

@@lienchen12 I think one of the earphones is shorted, but that was my mistake... I must have reversed the polarity. So sad! Lien, can I ask for your help? A friend is going to china next month and would like to buy just one side of the realme buds air 5 pro earphones... I saw that there are replacement parts for these earphones on the official realme website in China, but I didn't find any link to make the purchase... It's very difficult for me because I don't understand Chinese. So... Can you help me finding a link where I can buy just one of the earphones (the one on the right side) in your country? Thank you in advance for all your help

check my latest upload i have made 2 earbuds charging together

kzfaq.info/get/bejne/ht1laNSAv7_caGQ.html

kzfaq.info/get/bejne/eMxonLuH29vFZIk.html

@@lienchen12 thank you!! I will be doing this soon to charge some of the headphones I lost a case to.

@@strelkomania ur welcome

any size, actually when the wire inserted to terminal connector you can retract or adjust to connect earbuds charging hole’s, thank you for watching..

yes you can to supply the board

old or broken earbuds case, i took the board the charge controller, i use solid wires and 3.7 volts battery

Ok thanks

to turn off ( long press until lights off ) any kind of earbuds unused, scrap, or you can buy the cheaper one. the voltage is the same, you can use it just follow my video, thanks for watching..

DC 5 volts, use digital multi-tester to locate + and -

lithium battery 3.7 volts, any watts

@@lienchen12 thanks bro♥️

@@dxthorgming5656 welcome bro

How did you find the +ve and -ve side of earbuds

@@tushalshaw1137 use digital multi meter

english please

use digital multi-tester to locate the positive and negative

i can make a video for that and you can follow it

@@lienchen12 will u make it for me for oppo enco buds 2 charging case

@@VijayKumar-nb4px kzfaq.info/get/bejne/Z5qRZ5qnlajDYoE.html

@@VijayKumar-nb4px in my video tutorial you can use power bank to charge your oppo enco buds2, just watch that link

@@lienchen12 thank you bro

2 solid wires, terminal connector, small magnet

All items name

@@lienchen12 thx bro 😊

@@onlybholeyji5822 just follow my video tutorial i have already description there