High Capacity 21700 Rechargeable PowerBanks Case LCD Display Two USB Port Charging Box Battery Holder

for various occasions, easy to carry and install Builts in protections circuit to overcharging, overdischarging, and short circuiting of the battery, improving usage high-strength or other materials, with good wear resistance and impacts resistance Not welding: Users do not need to welding, simply insert and use, reducing assembly difficulty Easy to replace: Simply install the battery into the slot of the kits and connectings the connectors of the kits correctly to build a complete powerbank