HIGH QUALITY: The batteries holder is waterproof and durable, which can ensure a long time use.
EASY TO USE: This batteries box house can be packed into 4×18650 batteries and combined them to bicycle lights powered.
WITH PHONE CHARGING FUNCTION: With the phone charging function. With a power display function. You can use two or four 18650 lithium battery.
WITH DC CONNECTOR INPUT: With DC connector input, the output voltage of 8.4V. USB connector output voltage 5V, current 2A.
GUARANTEE: If you are not satisfied with our product you received, you can send emails to us at any time. We will reply you instantly and help you solve your problem.