Car Jump Starter, 4000A Peak Car Battery Charger Power Bank, 12V Jumper Box Jumper Battery Pack (All Gasoline or 10.0L Die)

Matters needing attention (buyers must see):

1.The product has just been received, you must first turn on the flashlight to discharge, then charge the product for more than 4 hours before starting the car, because the product's battery is empty. This operation can prolong the service life of the product!
2.Do not discharge and charge at the same time!
3.Charge every 3 months, low power may fail start.
4. Charge phone tablet only occasionally. efficiency is about 50%.
5. The charge speed or discharge speed will be fast during the last 15% power of the jump starter.
Please do not worry about these problems. This is the characteristic of high-rate lithium batteries, and it will not affect product quality and normal use.

Why it's necessary to get a jump starter?
1. Long standby time run out battery
2. Make preparation for a long driving trip
3. Your car can't start due to low power or freezing winter