Product Review

You can choose any capacity 18650 batteries as supplying power for your bike light headlamp according to the case, just put 4 or 6pc 18650 3.7v batteries into the case according to the "+" and "-" marked inside, then screw case cover, a great batteries pack power bank for your Bike light Headlamp is ready! So easy and so convenient!
- Bike light Headlight Safety Battery Pack Case with DC and USB interface.
- Great for DIY a 18650 batteries pack power bank for your bike light headlamp.
- Feature:
- Material: Durable Plastic, Light Weight, Waterproof and with Led indicator light for Power Status.
- Case Size:9x 6.7x 4.8CM
- With DC and USB interface: DC interface is for connecting 8.4V Bike light, USB interface suitable for connecting 4.2v Bike light head lamp, or charge cell phone.

- Over-charge protection voltage:8.4 V
- Over-discharge protection voltage: 5 V
- Over-discharge protection current: 9 A
- Standby current: 10A
- DC output voltage : 8.4V
- USB output standard voltage: 5 V±0.2
- USB max output: 2000MA

- Package includes:
- 1x Black Case with DC and USB interface for DIY bike light batteries power back.
- 1x Black Strap.
- Note: No batteries and charger included.