Seems powerful and well rated.
3 in 1 Car Jump Starter (Jump Starter, 21000 mAh Power Bank, LED Flashlight: Bright, Strobe and SOS modes)
Grepro car jump starter is enough power to start 12V cars, trucks, motorcycles, watercraft, ATV, UTV, mower, boat, RV or tractor and yacht (up to 10L gas, 7L diesel engine) in seconds, even in extreme temperature -4℉~140℉.
Powerful and Faster Power Bank
With 5V,2.1A and 5V,1A usb quick ports, battery jump pack equipped with 21000mAh capacity to charge your smartphones, tablets, GPS, camera, kindle and more mobile devices multiple times fastly.
DC 12V Power Supply
Package included Cigarette Lighter Adaptor and Cigarette Lighter Charger, it can help you charger many 12V devices, such as: car refrigerator, samll air compressor pump, vacuum cleaner and so on.
Two Different Charging Methods
A 12V DC charger to re-charge Grepro this auto battery booster on the go in the vehicle, and a wall charger to re-charge it at home.
Unique Aluminum Alloy Case Design
The case of our portable jump starter uses premium aluminum alloy metal will better withstand collision, resist scratch and stain, anti-fire and dissipate heat.
Smart LED jumper clamp (8 Protected Against)
The intelligent protection device on the clamps can provide short circuit protection, over-temperature protection, reverse-polarity protection, reverse-charge protection, over-charge protection, over-discharge protection, over-current protection, over-voltage protection, low-voltage protection, etc with a built-in protection circuit to protect the safety of every user.
Powerful LED Light
Our jump starter equipped with LED flashlight, it has bright, strobe and SOS modes, which can help you in any case especially for adventure, outdoor, daily, emergency, travel.
Light and Small
Unlike some big & heavy car jump starters, this one is small & light enough to store in glove box and in any little corner of your car.
Better spend more if your life depends on it. I am not here to rant but to warn everyone… It might be not a big deal if you are stuck in the cities with this, but if you go to Whoop whoop you better want to be equipped better..