sea jump 2PCS 3.7V 3000mAh Li-ion battery with JST Plug and USB Charging Cable Suitable for HJ819 DE819 RC Ship Huina 1337 1338 1516 1517 1552 1554 1558 RC Engineering Vehicle Drifting Car Truck Off-road Racing Car 

Voltage: 3.7V; Capacity: 3000mAh
Product Weight: 48g (1PCS)
Product Size: 2.60 * 0.71 inches
Package included: 2PCS battery, 2PCS USB Charging Cable 

Battery configuration: 1S
Discharge rate: 15C
Discharge connector: JST-2P plug
Charging interface: JST-2P plug 
Charger Introduction
Product Name: 3.7V USB Smart Charger
Input parameters: DC 5V 2-3A
Output parameters: DC 3.7V 500mA
Plug model: Two pin balanced charging plug
Applicable battery: 1S 3.7V lithium battery Li PO/Li ion
Charging indicator:
When the charging cable is connected to the power supply and the battery is charged, the red charging indicator light remains on and the fully charged red light goes out. 

Battery prevention measures:
1. Turn off the device when the battery is low to avoid deep discharge.
2.When not in use, be sure to disconnect the battery from the device.
3. Do not use or charge the battery if it swells, swells, leaks, overheats, or experiences any other abnormal phenomena.
4. Do not disassemble, puncture, impact or damage the battery. Do not ignite the battery.
5. Do not overcharge the battery. Improper use, such as short circuits or overcharging, may lead to explosions or fires.