USB Powerbank for 307090 battery
Description
Hello everyone, I have lots of 307090 batteries which can be mostly found in Chinese cheap tablets. So I decided to use them with a power bank. This design can hold up to 5 batteries and using cheap power bank diy module sale on Aliexpress. <p><a href="https://www.aliexpress.com/item/4000006694424.html">Battery</a></p> <p><a href="https://www.aliexpress.com/item/4001150931579.html/">Diy Charger</a></p>
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