Tear down of a retail store power bank

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Would an Xtar SP1 and a 26650 battery make a good version of a cell phone/Ipad charger?

Test/Review of Charger Xtar SP1

Charger Xtar SP1 [image] [image] [image] Xtar makes many good chargers, this one is a single channel charger with 3 currents, 3 voltages and able to handle batteries up to 26650 size. This makes it useable for most LiIon batteries on the market, except the smaller ones. It does also have a usb output, making it possible to charge a phone or other usb equipment from it. [image] [image] [image] The charger comes in a cardboard box with lots of specifications and batteries sizes liste…