DIY Power bank that was too ambitious

#powerbank #diyelectronics #batterypack
This is another power bank that I have put together recently. Uses 2x 21700 cells that is supposed to deliver whopping 45 watts. Has a color LCD that shows very detailed information. But does it deliver? Is there any caveats?

DIY powerbank kit in the video:
https://www.aliexpress.com/item/1005005928381060.html

* Recently, AliExpress stopped selling some rechargeable batteries and related items to Korea. It might be available in other places, but I cannot guarantee.

My first power bank video: the yellow one
https://youtu.be/dVXSpkpmYhk

Second power bank with 4x 18650
https://youtu.be/FWwu-2AEPzk