sea jump 4PCS 3.7V 500mah Lipo Battery with 4in1 Charger Suitable for D20 Mini Drone Folding Quadcopter Spare Parts

Voltage: 3.7V; Capacity: 500mAh
Product Weight: 21g (1PCS)
Product Size: 68*23*11mm / 2.68*0.9*0.43in
Package included: 4PCS battery, 1PCS 4in1 charger

Battery configuration: 1S
Discharge rate: 25C

ntroduction to Chargers
Product Name: USB Smart Charger (1-to-4 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 and the battery is connected for charging, the red charging indicator light remains on and the red light goes off when fully charged.

Battery precautions:
1. Turn off the device when the battery level is low to avoid deep discharge.
2. Be sure to disconnect the battery from the device when not in use.
3. If the battery is bloated, swollen, leaking, overheated or any other abnormal phenomenon, do not use or charge it.
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.