powerbank Replaceable magazine charging bank Ultra-thin compact portable21700 battery large capacity

Separate mobile power supply, experience module change battery, it is a charger, it is also a power battery: combined is a super charging treasure. Battery, it's up to you! Compatible with 99% flat head 21700 lithium battery. Capacity you say, a single battery 5000 MA, 68 grams, can be taken on trains, planes. 22.5W super fast charge, 30 minutes to fill half, MAX output, say goodbye to low speed slow charge. Safe fast charge without damage to the machine.