6 Best Anti Gravity Jump Starters of 2025

Game-changing integration meets roadside readiness in the Antigravity XP-15, where 2000-amp peak power and a built-in high-flow air compressor converge into one sleek unit. This isn’t just a jump starter—it’s a complete emergency toolkit that solves two of the most common roadside issues: dead batteries and underinflated tires. The smart digital pressure control with automatic shutoff takes the guesswork out of tire inflation, while the ultra-durable clamps ensure spark-free, reverse-polarity-safe connections—a godsend for panicked first-time users.

In real-world testing, the XP-15 proved its mettle on a flat 195/65/R15 tire, inflating from 0 to 35 PSI in just under six minutes—faster than many standalone portable compressors. It revived a sluggish V6 sedan in sub-zero temps with zero hesitation, and its 60W USB-C PD output fully charged a MacBook Air in under 40 minutes. However, while it handles most gas and diesel engines with ease, those with larger diesel trucks (above 5L) may find themselves pushing the limits. The LCD screen is brilliantly intuitive, toggling between battery voltage, tire pressure, and charge status with a single button.

Compared to the GOOLOO GP4000, the XP-15 trades raw amperage for versatility and integration, making it ideal for campers, daily drivers, and weekend adventurers who want one device to do it all. It’s not the most powerful, but it’s arguably the most functional all-in-one in its class. While the NOCO Boost X delivers more brute force, the XP-15’s air compressor inclusion gives it unmatched utility for routine maintenance and emergencies alike—offering smarter, broader value in a slightly less powerful package.

The ultra-compact beast that redefines power density, the Antigravity XP-20 packs a 20,000mAh battery and 2000A peak current into a chassis that fits in your glovebox. This isn’t just a jump starter—it’s a high-speed power hub with 100W USB-C PD charging, capable of refueling laptops and smartphones at lightning speed while reviving gas engines up to 10L and diesel rigs up to 8L. Its one-hour full recharge time with the included 100W charger obliterates competition, making it perfect for frequent users who can’t afford downtime.

On the road, the XP-20 delivered consistent starts across multiple vehicles, including a diesel pickup in 20°F weather, with no drop in performance over five consecutive attempts. The dual USB-A ports and 15V DC output add serious versatility, letting you power dash cams, tire inflators, or camping gear. The large digital display is a standout, showing real-time wattage flow and battery percentage with surgical precision. However, it lacks an integrated air compressor—forcing users to carry extra gear for tire fixes—a notable omission given its premium positioning.

When stacked against the XP-20-HD, the XP-20 offers the same blazing 100W recharge speed but with 4,000mAh less capacity, making it better suited for quick-response scenarios than extended off-grid use. It’s the most compact high-power jump starter in the Antigravity lineup, ideal for drivers who prioritize fast recharging and portability over maximum capacity. Compared to the GOOLOO GP4000, it’s pricier but far more refined in build, speed, and charging tech—delivering elite-tier performance in a minimalist form.

Raw jump-starting authority defines the GOOLOO GP4000, a 4000A peak powerhouse built for those who demand maximum starting confidence—especially in extreme cold. With the ability to crank 10.0L diesel engines and restart vehicles with batteries as low as 2V via Force Start mode, this unit shines when others falter. Its ruggedized shell laughs off drops and winter conditions, operating reliably from -4°F to 140°F, making it a go-to for truckers, off-roaders, and emergency responders.

In testing, the GP4000 nailed cold starts on a 7.3L diesel van at 15°F with zero hesitation, and its 60+ jump capacity per charge is unmatched in value. The dual USB-A and USB-C ports keep devices alive during long hauls, though charging speeds max out at standard QC, not PD—so don’t expect laptop refueling. The metal clamps are thick and conductive, but the lack of a DC output or built-in compressor limits its role as a true multi-tool. Still, its 10-layer safety system prevents sparks and shorts with near-perfect reliability.

Against the LIFMOCER GS300, the GP4000 is a clear performance king—offering higher amperage, better durability, and wider engine compatibility. While the NOCO Boost X is safer and faster to recharge, the GP4000 delivers more brute force for less money, making it the best bang-for-buck performer in extreme conditions. It’s not the smartest or fastest-charging, but if you need unstoppable starting power on a budget, this is your unit.

The undisputed capacity king of the Antigravity line, the XP-20-HD combines 24,000mAh (88.8Wh) battery mass with 2000A peak current and 100W USB-C PD charging—making it the ultimate off-grid power solution for RVers, overlanders, and digital nomads. Unlike most jump starters, this unit doubles as a true portable power station, capable of charging laptops, cameras, and even small appliances multiple times over. Its one-hour full recharge with the included 100W charger is unmatched in speed and convenience.

In real-world use, the XP-20-HD powered a 45W LED light bar for over 12 hours and delivered 15 consecutive jump starts on a V8 truck without breaking a sweat. The large digital screen provides granular feedback on input/output wattage, helping users optimize power usage. It handles 10L gas and 8L diesel engines with ease, but like its siblings, it lacks an integrated air compressor—forcing users to carry additional gear. Still, the dual USB-A and 15V DC port add serious utility for powering accessories.

Next to the XP-20, the HD variant offers 4,000mAh more capacity and identical charging speed, making it the better choice for extended trips and power-hungry users. While the NOCO Boost X has better safety smarts and flashlight quality, the XP-20-HD outpowers and outlasts it in sustained output. It’s the most capable Antigravity model, trading slight bulk for unrivaled energy storage—delivering more total power and faster recharging than any other in this lineup.

The apex predator of lithium jump starters, the NOCO Boost X GBX155 unleashes 4250A of turbocharged starting power—enough to fire up 10.0L gas and 8.0L diesel monsters with terrifying ease. What sets it apart isn’t just brute force, but Ultrasafe 2.0 technology: spark-proof, reverse-polarity protected, and thermally optimized for flawless operation even in freezing garages or blazing deserts. Its 60-second timer ensures each jump uses only the necessary energy, delivering up to 18 starts per charge with consistent power.

In testing, the Boost X revived a completely dead diesel truck in -10°F with a single 3-second crank—then did it five more times without faltering. The 60W USB-C PD port charges laptops efficiently, and the dual-direction charging lets it juice up other devices or accept a charge via the same port. The 500-lumen LED flashlight is best-in-class, with seven modes including emergency strobes visible from over a mile away. However, its 2.7-hour recharge time feels sluggish next to Antigravity’s one-hour marvels.

Compared to the GOOLOO GP4000, the Boost X offers better safety, smarter power delivery, and superior build quality, though at nearly triple the price. It’s not the fastest to recharge or the most feature-packed, but for those who want maximum reliability and safety in extreme conditions, it’s the gold standard. It outclasses the Antigravity units in ruggedness and emergency readiness, making it the top-tier choice for professionals and extreme users.

Don’t let the budget price tag fool you—the LIFMOCER GS300 packs a 3000A punch and delivers reliable starts for 10.0L gas and 8.0L diesel engines, all while costing less than most fast-food meals for two. Its Force Start mode is a game-changer, capable of reviving batteries as low as 2V—a rare feature at this price. The LCD display gives clear voltage readings, helping users monitor both the jump starter and their car battery, adding diagnostic value beyond basic models.

In real-world tests, it successfully jump-started a 6.7L diesel SUV in 25°F weather on its third try (after a brief cooldown), proving capable despite thermal throttling under heavy load. The dual USB ports charge phones and tablets adequately, though without USB-C or PD, it won’t power laptops. The included EVA case adds protection, but the lack of a wall charger means you’ll need to bring your own. It’s not built for repeated heavy use, but for occasional drivers and urban commuters, it’s more than sufficient.

Against the GOOLOO GP4000, the GS300 sacrifices 1000A of peak power and ruggedness for affordability, but still covers core needs. It’s no match for the NOCO Boost X in safety or speed, but for those who want basic, reliable jump-starting on a tight budget, it’s a no-brainer entry point. It offers essential functionality without fluff, making it the smartest budget buy for drivers who want peace of mind without overspending.