FIRSTXIU Power Case 6x21700 Battery Holder Detachable Designs With High Efficiency Charging Digital Display Screen Shell

Tip: 21700 batteries is not included in the package, you need to purchase separately. Once the positive and negatives terminals of the battery is reversed, there is risk of the motherboards and protective board burning out and causing a Please pay attention to the direction of the positive and negatives poles. Due to detachable designs, the structural designs is currently not foolproof. Can only use the 21700 battery of which positive electrode is flat top. easy assembly with our 21700 battery case, designs to accommodate 6batteries for most power storage and featuring PD100w super fast charging capabilities.