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The NOCO Boost GB40 is a compact lithium jump starter rated at 1000 amps peak, enough for up to 20 starts per charge on gas engines up to 6.0L and diesel up to 3.0L. Its UltraSafe clamps are spark-proof and reverse-polarity protected, so a wrong connection won't damage the unit or the vehicle. It doubles as a USB power bank, recharges in about 3 hours, and carries a 100-lumen LED light with seven modes in an IP65 housing that weighs about 2.5 lb. It suits drivers of cars, small trucks and boats who want a glovebox-sized backup; bigger V8 and diesel owners should look at NOCO's higher-amp models, and reviewers often note it needs periodic recharging to be ready.
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Owners widely treat the GB40 as a reliable emergency starter that works first time on cars and small trucks. Praise centers on the safe clamps, compact size and the power bank and light extras; criticism focuses on the need to recharge it periodically and its limits on larger engines.
The NOCO Boost GB40 is a compact lithium jump starter for 12V vehicles. It delivers 1000 amps of peak power and gives up to 20 starts per charge. It is rated for gas engines up to 6.0L and diesel engines up to 3.0L.
UltraSafe Technology gives it spark-proof connections and reverse polarity protection. The housing is IP65-rated and rubberized over-molded to protect against water, dust and impact. It comes with heavy-duty clamps.
It also works as a power bank for smartphones, tablets and other devices, and it recharges in 3 hours. An integrated 100-lumen LED flashlight has 7 light modes, including SOS and strobe.
