Xtar PB2S Charger & Power Bank: Review/Test 

USA - amzn.to/3DGd6vr Amazon UK - amzn.to/2LwMVvJ
Xtar updated their PB2 power bank with the PB2S, this new "improved" model have a larger display, it can also show the battery/input/output voltage, and can take larger 20/21700 cells in addition to
18650's (including protected cells)
I test the PB2S to see how it performs, and where it falls short
Sample supplied via Xtar for unbiased testing and review