Re: Oscilloscoope ZOYI ZT-703S
Postat: 11 oktober 2025, 09:18:58
För övrigt bör ni nog slå en flukt på denna tråd. https://www.eevblog.com/forum/testgear/ ... -charging/
Svenskt forum för elektroniksnack.
https://elektronikforumet.com/forum/
Antingen mäter ni på olika sätt eller så har ni olika batterier (märket är detsamma).I went through those heated YANNAI 3400mAh batteries that came with XEAST and ZOTEK.
There was something strange in their protection circuit. The capacity test reject them below 1A current. I took off the protection circuit. There were no opposing charge and discharge protection fets, but only one fet.
Tested capacity on the cell was 1100mAh.
When I took off the last protective sleeve, a completely rusty cell was revealed.
If you have the slightest doubt about the battery, replace it with a better protected one.