The rechargeable waterproof 18650 battery case is special designed for cycling bike light headlight, with DC and USB interface.

Features:
Can put 4*18650 batteries in to power bicycle lights.
Easy to use, you can use two or four 18650 lithium battery.
With DC connector input, the output voltage of 8.4V._
USB connector output voltage 5V, charge cell phone in emergency.
3 Blue Indicators showing the batteries power status.
Made of high grade ABS,_ lightweight, waterproof and sturdy.
Strap to ensure installtion more convienent and faster

Specifications:
Main material: plastic
Waterproof grade: IP67_
Input voltage: 8.4V, 2000mAh
Output 1: 8.4V DC
Output 2: 5V, 100mA USB
Cable: 600mm
Item size: 100 * 50 * 50mm / 3.94 * 1.97 * 1.97in
Package size: 110 * 50 * 50mm / 4.33 * 1.97 * 1.97in
Item weight: 180g / 6.35ounces
Package weight: 200g / 7.05ounces

Note:_
Only a case is included in the package, NO batteries.

Package List:
1 * Battery Pack Case