G40 Portable Car Jump Starter 4000A Peak, 12V Battery Jumper Pack

Product details

From the brand BUILT FOR THE UNEXPECTED. Rugged, UL 2743-certified jump starter systems engineered for the cars, trucks, boats, and off-grid gear you actually depend on. About TUFFORGE TUFFORGE builds portable power for the worst day. The G-Series jump starter system delivers the instant starting current and emergency USB power that drivers, boaters, overlanders, and tradespeople need when things go wrong — and we back every unit with independent UL 2743 safety testing and ten built-in protections. About TUFFORGE TUFFORGE builds portable power for the worst day. The G-Series jump starter system delivers the instant starting current and emergency USB power that drivers, boaters, overlanders, and tradespeople need when things go wrong — and we back every unit with independent UL 2743 safety testing and ten built-in protections. What size engine can the TUFFORGE G40 jump start? The G40 delivers 4000A peak and 2000A starting current, enough to crank 12V gas engines up to 10.0L and diesel engines up to 8.0L. That covers passenger cars, SUVs, pickups and HD diesel trucks, motorcycles, ATVs, jet skis, boats, tractors, and lawn equipment on a single full charge — up to 20 jump starts before it needs a recharge. What size engine can the TUFFORGE G40 jump start? The G40 delivers 4000A peak and 2000A starting current, enough to crank 12V gas engines up to 10.0L and diesel engines up to 8.0L. That covers passenger cars, SUVs, pickups and HD diesel trucks, motorcycles, ATVs, jet skis, boats, tractors, and lawn equipment on a single full charge — up to 20 jump starts before it needs a recharge. Is it safe for someone who's never used a jump starter before? Yes. The G40 is independently tested and certified to UL 2743 safety standards. The intelligent jumper clamps will only deliver power when the polarity is correct — a blue standby light turns green when you're connected properly, and there's a manual force-start override for fully depleted batteries. Ten built-in protections cover spark-proof, reverse polarity, short-circuit, over-current, over-voltage, over-charge, over-load, reverse-charge, high-temp, and low-temp scenarios, so wrong connections simply won't fire. Is it safe for someone who's never used a jump starter before? Yes. The G40 is independently tested and certified to UL 2743 safety standards. The intelligent jumper clamps will only deliver power when the polarity is correct — a blue standby light turns green when you're connected properly, and there's a manual force-start override for fully depleted batteries. Ten built-in protections cover spark-proof, reverse polarity, short-circuit, over-current, over-voltage, over-charge, over-load, reverse-charge, high-temp, and low-temp scenarios, so wrong connections simply won't fire. Can I use the G40 as a regular USB power bank? Yes — the 20,000 mAh / 74 Wh lithium pack doubles as a full USB power bank. Two USB-A outputs (one 18W Quick Charge, one standard 5V/2.4A) let you charge phones, tablets, or small electronics on the go. Top it back up through the 18W USB-C Quick Charge input with the cable included in the box. The pack is rated for 1,000 full charge cycles. Can I use the G40 as a regular USB power bank? Yes — the 20,000 mAh / 74 Wh lithium pack doubles as a full USB power bank. Two USB-A outputs (one 18W Quick Charge, one standard 5V/2.4A) let you charge phones, tablets, or small electronics on the go. Top it back up through the 18W USB-C Quick Charge input with the cable included in the box. The pack is rated for 1,000 full charge cycles. Product description STARTS A DEAD BATTERY, EVEN AT 0V: 4000A peak and 2000A starting current are enough to start a 12V battery that has drained all the way to zero, with no second car needed. A full charge gives up to 20 jump starts before it needs recharging. STARTS TRUCKS, SUVS AND DIESELS: The jump pack is rated for 12V gas engines up to 10.0L and diesel engines up to 8.0L, which covers full-size and 3/4-ton pickups. It also works on cars, motorcycles, ATVs, boats, jet skis, tractors and lawn equipment. SMART CLAMPS CATCH HOOKUP MISTAKES: Power only flows when the clamps are on the right posts, and the clamp light turns green when it's ready. Ten built-in protections cover reverse polarity, sparks, short circuits, overload and overheating. CHARGES YOUR PHONE TOO: The 20,000mAh (74Wh) battery doubles as a power bank with two USB-A ports, 18W Quick Charge and 5V/2.4A, so two devices charge at once. It refills through its 18W USB-C input (cable included) and is rated for 1,000 cycles. FITS IN A GLOVEBOX: 8.07 x 2.95 x 1.57 inches and 25.4 oz, with a rubberized housing and corner bumpers. It works from -4°F to 140°F. Comes with the smart clamp cable, USB-C charging cable, zip storage case, quick-start guide and a 365-day warranty.