Nitecore F2 Flexible Power Bank Smart Battery Charger - DS
Nitecore F2 Flexible Power Bank is compatible with cylinder rechargeable Li-ion batteries of various sizes. Featuring an upgraded 3.0 Micro-B charging port, the F2 greatly improves the charging efficiency. Without an external power source, F2 can charge an external device connected to its USB output port with the large capacity battery in its slot. The ideal charger to bring on long travel and outdoor trips.
Cheapest I can find. Just got this email from shopping square and bought one. It takes different batteriea but I bought it for my spare 18650 batteries which will double up as a nice small power bank
carefull at checkout they put an extra $1.95 postage insurance on just before payment which needs to be removed
Geez I wouldn't want to be taking that through airport security with my surname!