A9 4000A 12V Jump Starter for Car Boat Lawnmower
- Amazon now offers the BOOKOO A9 4000A 12V Jump Starter, now $22.19 (originally $36.99), with promo code P5GM62ZQ .
- Prime members get free two-day shipping, and regular members get free shipping on orders over $35 within the contiguous U.S.
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Editor's Pick: The BOOKOO A9 is a portable car jump starter with 4000A peak current and a 20000mAh capacity, capable of jump-starting gasoline engines up to 12L and diesel engines up to 10L. It works with sedans, SUVs, trucks, motorcycles, RVs, boats, and garden machinery. The unit is lightweight and comes with a hard carrying case, supports IP66 water resistance, and operates in temperatures from about -4°F to 149°F (-20°C to 65°C). Beyond jump-starting, it also features USB/QC 3.0 fast-charging ports for charging phones, tablets, and other devices, plus three lighting modes: flashlight, strobe, and SOS. The smart battery clamps include multiple safety protections against reverse connection, overcurrent, overvoltage, short circuit, and sparks, making it a versatile piece of gear for car rescue, portable power, and outdoor emergency lighting.
