Rechargeable 18650 battery box case Waterproof Battery Box for Bike Light bicycle lamp power bank box for phones + 4 x 18650 4200MAH battery

Tip:
 . The battery box is suitable for use in 18650 (3.7 V rechargeable lithium battery, battery pack inside to prevent overcharge discharge protection circuit regardless of the board or the battery can use the board!Battery installation note was negative direction
. When to recharge the battery pack batteries need to be 8.4 V charger output terminal is connected to the battery compartment DC round mouth can be charged!
. Battery pack round mouth connect the headlights use 8.4 V, can be output or input;USB port is only suitable for 5 v output, can charge the battery for mobile phone and other digital products!

1.over-charger protection voltage--8.4v
2.over-discharge protection vovtager--5.0v

Package includes:
 

1 PC battery box

1 PC charger

4 PCS 18650 battery