It's because it is running out of power; please use the A/C charger or car charger to recharge it. We suggest you fully charge the item every 3 months if it hasn't been used. And charge after each use.
When the compressor is working, it is reasonable to become heated. It will gradually cool down after finishing working. Stop in every 10 minutes to cool down for 5 minutes.
1-3 business days your order will be shipped, depending on your location 3-10 days you will receive it.
The jumper starter has intelligent-detective function. When it is not working or it has been finished charging, it will automatically enter sleep mode to save power.
Not suitable for large trucks and heavy vehicles(except for 4000A model); it is for the household car only. Please check the reference pressure on the wheel tires before use.
If you are under warranty, please click on Warranty Registration; if you have a problem with your product and need to return it, please click on Returns.