Hello,
everyone, I am looking for a power bank since my iphone was always dead which lead me lose contact with my friends. On the other hand, i have many rather resource-intensive digital devices which the battery life will be worth much, well, the thing is, i am wondering if there are some power banks which accept different battery cells replaced like 1 cell, 2 cell, 3 cell so i can decide the capacity by myself. Is it a weird idea? I find one by google in this website
www.koeok.com, the power bank can also work with iPod series, Walkmans, digital cameras, portable game consoles, and other devices compatible with computer USB power supplies, above all, this product sold in different capacity from 2600mah to 10800mah. However, somewhat less than that, there is minimum order limits. Any other ebay or amazon shops can recommend to me? I can't get any purchase on there.