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The BOOKOO Jump Starter 2000A is a portable lithium-polymer pack rated to deliver 2000 amps peak, enough to start gasoline engines up to 8.0L and diesel engines up to 6.5L. Its 20000mAh (74Wh) battery doubles as a power bank, and BOOKOO rates it for use from -4°F to 149°F. It is aimed at drivers, RV owners and small-engine owners who want one pack for cars, trucks, boats, ATVs, mowers and tractors. Against rivals in the same class, its 2000A rating and 8.0L gas ceiling sit at the higher end, but the listed weight and dimensions conflict, so check the actual size before counting on glove-box storage.
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The BOOKOO A9 is a portable lithium jump starter rated at 2000 amps peak current. It can start a car with a low or dead battery. It is rated for gasoline engines up to 8.0L and diesel engines up to 6.5L. It works in temperatures from -4°F to 149°F.
It has a 20000mAh (74Wh) lithium polymer battery. The battery can start a dead car battery over 30 times on a charge. Two USB outputs, including a Quick Charge 3.0 port, can charge phones, tablets, GPS units, cameras and headphones. A 12V DC port powers accessories such as tire inflators and inverters.
The built-in LED light has flashlight, strobe and SOS modes. The unit has eight protections, including over-current, over-voltage, short circuit and reverse polarity. The smart jumper clamps signal errors with lights and a beep. A rubber stopper gives it IP66 water resistance. A storage box keeps the battery pack and accessories together.
