POWERFUL CAR JUMP STARTER 4000A - BOOKOO H9 New battery jumper starter portable can easily jump-start all 12V common vehicles with up to 10.0L gas and 8.0L diesel engines in seconds with its peak current reaching 3000amps,even at -4~140℉. Supports 50 jump starts at most on a single charge, always ready to help. It is suitable for lawnmowers, motorcycles, passenger cars, trucks, and even boats, tractor, etc. ALL IN ONE jump starter - This jump start battery pack integrates 4 practical functions to meet all your needs, including car emergency starting, 400-lumen LED lighting(stable, strobe, and SOS), Power bank 20000mAh with QC3.0 fast charging, and 12-16V/6A DC port to power your 12V vehicle-mounted devices. while it's only weights 1.2pounds, Say goodbye to old bulky jump start battery pack NOW! EXTRAORDINARY MULTI-PROTECTION - H9 New jumper cables with battery pack is here to free your mind of worry like short circuits or sparks. With certified 10 intelligent protections system(reverse polarity, reverse charge, over discharge, reverse connection, short circuit, over charge, over current, over heat, spark resistance) and upgraded heavy-duty jumper cables kit for car, just use it to jump start your car confidently! TAKE IT ANYWHERE - This portable jump starter for car weighs only 1.56 pounds and measures 6.8*3.7*1.5 inches, about the size of a pack of paper. You can easily put it in your bag, or anywhere in your car, without taking up any space.