3V-15V 3A-50A Second Hand Lifepo4 Lithium Battery Charger w/ Screen Adjustable Voltage Current

3V-15V 3A-50A Second Hand Lifepo4 Lithium Battery Charger w/ Screen Adjustable Voltage Current

Instructions:
- Step 1: the charger should not be connected to the battery, turn on the power, adjust the voltage knob to adjust the voltage. Refer to the voltage display above the display screen (4S lifepo4 battery 3.65V*4=14.6V, 3S li-ion lipo battery 4.2V*3=12.6V), adjust to the voltage you need.
- Step 2: Adjust the current to the minimum. After connecting the battery, adjust the current from small to large and adjust to the current you need (In the charging process, it is not allowed to adjust the voltage knob again, otherwise overcharge or undercharge will occur). If the voltage is displayed, the voltage you set, the current becomes zero, and it is already full.

Lead-acid battery charging precautions:
Lead-acid batteries do not support high-current charging, and should be charged with a current of 1/10 of the capacity. For example: a one-hundred lead-acid battery, you need to charge with 10 amps! The time must be 8-10 hours. If the time is too fast, the current will be too large and it will damage the battery. The lead-acid battery charging voltage is about 14.4V. The voltage is slightly different due to different battery manufacturers. The instructions on the battery label shall prevail!

Specifications:
- Input voltage: AC 100v/110v --220v/250v
- Maximum output power: 750W
- Output voltage: DC constant voltage meets 11V-14.8V (suitable for 3S Li-ion Lipo and 4S Lifepo4)
- Output current: 1-50A (only constant current and constant voltage can be used as charger)
- Protection method: After the positive and negative poles are short-circuited, it will stop output (The current knob is adjusted to the minimum to the off state, and then restarted to resume)

Package Included:
- 1 x Battery Charger

Note:
- It is a second-hand item. It is 90% new. The quality of the product is guaranteed, because it has passed tests before delivery.
- Reverse connection of the positive and negative poles of battery is not allowed. Red one is connected to positive pole and black one connected to negative pole.
- Battery is not included in the package.