Features:
OOTDTY  
SM4P 400mA output current 7.4V 3.7V output
Automatically adapt to USB input power, quickly and stably recharge the battery.
USB SM-4P plug for Li-ion battery electric car boat USB charging cable
Please check the correct Positive/Negtative connection between the and your batteries.
The intelligent load identification chip blocks excessive current and from entering and protects the device from damage.

Specifications:
Item: USB Li-ion Battery Charging Cable
Input 5V
Output 7.4V 3.7V
Output Current: 400mA
Adapter Length：Approx 63mm/2.47in

Package Includes:
1 Battery

Note:
Before place an order, please confirm the positive and negative terminals of the battery plug.
Please allow 0-1cm error due to manual measurement. plz make sure you do not mind before you bid.
Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!