7 Best Gooloo Jump Starter Chargers of 2025

The GOOLOO A3 isn’t just a jump starter—it’s a tire inflation powerhouse wrapped in a rugged, intelligent package. Boasting 3000 amps of peak current and a 150 PSI smart inflator with auto-shutoff, this device transforms roadside emergencies into quick, stress-free fixes. What truly sets it apart is its integrated digital pressure gauge and five preset inflation modes (SUV, car, bike, ball, custom), making it the go-to tool for drivers who regularly manage tire pressure—whether for daily commutes or weekend adventures. If you’ve ever overinflated a tire or struggled with a finicky portable pump, the A3’s precision and ease of use will feel like a revelation.

In real-world testing, the A3’s 35L/min airflow rate impressively inflated a flat Tesla Model 3 tire from 30 PSI to 36 PSI in under 60 seconds—outpacing many standalone tire inflators. The ultra-bright LED display remains glare-resistant even in direct sunlight, and the automatic shutoff at target pressure eliminates guesswork. However, continuous inflation drains the battery quickly—about 45 minutes of runtime on a full charge—so it’s best suited for topping off or emergency fills rather than inflating multiple large truck tires in one go. While it jump-starts reliably on 12V vehicles up to 9.0L gas engines, its real specialty is tire maintenance, not extreme cold-weather cranking like higher-end models.

Compared to the GOOLOO GP4000, the A3 trades raw jump-starting power for best-in-class inflation capabilities—a smart trade for users who prioritize tire care. It’s more versatile than the compact GP2000 but lacks the GT4000S’s ultra-fast recharge. The A3 shines for SUV owners, EV drivers, and cyclists who need a single device for jump-starting and precise tire inflation. With 7-in-1 functionality and a rugged BMS-protected design, it delivers exceptional value for users who want more than just a jump box—especially when tire readiness is a top concern.

The GOOLOO GP2000 is a pocket-sized guardian angel for drivers who want reliable emergency power without bulk or cost. With 2000 peak amps, it confidently jump-starts vehicles up to 8.0L gas engines—perfect for sedans, SUVs, and even light trucks—while weighing just 1.2 pounds. Its ultra-compact form factor slips into glove compartments or coat pockets, making it the most portable option in the GOOLOO lineup. For drivers who see a jump starter as “set it and forget it,” the 24-month standby time ensures it’ll hold a charge longer than most competitors, ready when disaster strikes.

During testing, the GP2000 delivered consistent starts on a 6-year-old sedan with a completely dead battery, even at near-freezing temperatures. The all-metal smart clamps provided a secure connection without sparking, and the reverse polarity alert prevented accidental misuse—a major win for first-time users. While it lacks built-in tire inflation, it doubles as a 400-lumen LED flashlight with SOS mode and a dual-USB power bank, capable of charging phones or tablets on the go. However, its smaller capacity limits repeated jump attempts—it’s ideal for a single emergency start, not jump-testing a problematic alternator over several tries.

When stacked against the GP3000, the GP2000 sacrifices 30% cranking power and USB-C charging for a significantly lower price and smaller footprint. It’s not as feature-rich as the A3 or GT4000S, but that’s the point: it’s a no-frills, highly accessible lifeline. Perfect for city drivers, older vehicles, or as a secondary unit in a fleet, the GP2000 offers the best bang for the buck among GOOLOO’s jump starters—delivering core safety features in a minimalist, dependable design.

Losing the original charger for your GOOLOO jump starter can render even the most powerful device useless—enter this no-frills, universally compatible 5V Type-C replacement. Designed specifically for the GP2000, GP3000, and GP4000 models, it delivers a steady 5V/15W output with a 1.8-meter (5.9 ft) cable that offers ample reach from dashboards to cup holders. While it lacks fast-charging capabilities, it ensures reliable, safe recharging when the included wall adapter is misplaced or damaged.

In daily use, the charger performs exactly as expected: it steadily replenishes the jump starter’s lithium battery without overheating, thanks to integrated overcurrent, overvoltage, and short-circuit protection. The wide 100–240V input range makes it ideal for international travel, and the compact plug fits standard outlets without blocking adjacent sockets. However, it’s noticeably slower than the 100W charger bundled with the GT4000S, taking 4–5 hours to fully charge a GP4000 versus under 2 hours. It’s not a performance upgrade—just a dependable, affordable lifeline.

Compared to the UL-certified B0CWNXMYPW model, this version offers similar specs but lacks formal safety certification, which may concern cautious buyers. Still, for users who simply need a functional, low-cost backup, this charger delivers peace of mind without breaking the bank. It’s the essential spare every GOOLOO owner should consider—especially since jump starters degrade faster when improperly charged. If you own a GP2000, GP3000, or GP4000, this charger is a practical, no-risk insurance policy against downtime.

The GOOLOO GP4000 is a muscle-packed jump starter built for drivers who refuse to compromise on power. With a 4000A peak current, it confidently starts large gasoline engines and diesel trucks up to 10.0L—making it ideal for heavy-duty pickups, RVs, and farm equipment. Even when a battery is completely dead, the “BOOST” button forces a start, and the rugged rubber-armored shell survives 5-foot drops without issue. For those who face harsh winters or store vehicles long-term, its reliable cold-weather performance down to -4°F is a game-changer.

Real-world testing confirmed it can jump-start a diesel F-250 after multiple failed attempts, and its massive 20,000mAh capacity doubles as a high-output power bank, capable of charging smartphones, tablets, and even small cameras via dual USB and USB-C ports. The built-in flashlight is bright enough to illuminate a full engine bay at night. However, it lacks a built-in tire inflator and a fast-charging wall adapter—charging via standard 5V takes 5+ hours, a notable drawback when you need it ready fast. It’s powerful, but not the quickest to recharge.

Against the GT4000S, the GP4000 shares the same core power but misses out on 100W rapid charging and a smart LED screen—features that justify the GT4000S’s higher price. Still, for users who want maximum cranking amps without paying for ultra-fast charging, the GP4000 is the smarter pick. It’s the best value for high-power needs, especially for truck and RV owners who prioritize brute force over bells and whistles. It delivers near-top-tier performance at a mid-tier price, making it a standout in GOOLOO’s lineup.

The GOOLOO GP3000 hits the sweet spot between power and practicality, delivering 3000A peak current—30% more than the GP2000—without sacrificing portability. It effortlessly starts vehicles up to 9L gas or 7L diesel engines, including full-size trucks and SUVs, even in sub-zero conditions. What makes it truly compelling is its 10-layer safety system, including spark-proof clamps and reverse polarity alerts, making it one of the safest jump starters for novice users. The “BOOST” mode activates below 9V, ensuring even deeply drained batteries get a second chance.

In real use, the GP3000 proved reliable across multiple jump-starts without overheating, and its 4-in-1 design—jump starter, power bank, flashlight, and DC power source—adds serious utility. The 15W USB-C and Quick Charge 3.0 ports charge phones up to 50% faster than standard ports, and the 400-lumen flashlight includes SOS and strobe modes for emergencies. Its shockproof armor and 5-foot drop resistance mean it can survive rough handling. However, like other models, it lacks a built-in inflator—users will need to pair it with a separate pump.

Pitted against the GP4000, the GP3000 offers slightly less power but includes USB-C input and better energy efficiency, with 50% longer lifespan and 18-month auto-sleep charge retention. It’s more capable than the GP2000 and more affordable than the GT4000S, making it the ideal middle ground. For drivers with larger vehicles who want strong performance, advanced safety, and modern charging ports, the GP3000 is the best mid-range choice—balancing cost, capability, and convenience like no other in the GOOLOO family.

The GOOLOO GT4000S isn’t just the most powerful—it’s the smartest and fastest-charging jump starter in GOOLOO’s lineup. With 4000A peak power, it starts gas engines of any size and diesels up to 10.0L, but what truly sets it apart is its 100W two-way fast charging—a rarity in this category. The included 100W wall charger replenishes the unit from 0% to 100% in just 1.2 hours, and 5 minutes of charging can deliver one jump-start. This is a game-changer for fleet managers or frequent travelers who can’t afford downtime.

In testing, the 3.2-inch LED screen provided crystal-clear status updates—voltage, charge level, connection alerts—making jump-starting intuitive even for beginners. The 15V/10A DC port powers tire inflators and inverters, turning it into a mobile power hub. It jump-started a diesel pickup in -10°F weather with ease, and its 24-month standby time means minimal maintenance. However, its higher price and larger size make it overkill for compact car owners. It’s built for those who demand maximum readiness and versatility.

Versus the GP4000, the GT4000S offers identical power but doubles down on speed and intelligence—faster charging, better display, and laptop-level power delivery via USB-C. It’s the only model that can charge a MacBook at full speed, making it ideal for digital nomads or remote workers. For users who want the ultimate all-in-one emergency and power solution, the GT4000S is the undisputed champion—merging raw power, rapid recharge, and smart features into one premium package.

When it comes to replacement chargers, safety and certification matter—and the UL-certified B0CWNXMYPW delivers both. Designed for GP2000, GP3000, and GP4000 models, it outputs 5V/3A (15W) through a Type-C connector, ensuring stable, efficient charging without overheating. The 6-foot (1.8M) cable offers generous reach, and the UL certification (Report ID: E482416) means it’s been rigorously tested for electrical safety—something not all third-party chargers can claim.

In practice, it charges at the same pace as the original GOOLOO adapters—about 4–5 hours for a full GP4000 charge—and includes multi-layer protection against overvoltage, overcurrent, and short circuits. Unlike generic chargers, it’s been fully aging-tested to match GOOLOO’s standards, reducing the risk of battery degradation. While it doesn’t support 100W fast charging, it’s perfect as a trusted spare or travel backup.

Compared to the B0DQPDBDQS model, this charger stands out with UL certification and a slightly longer cord, offering greater peace of mind for safety-conscious users. It’s not flashy, but for those who rely on their jump starter for emergencies, using a certified, durable charger is non-negotiable. This is the smart choice for long-term reliability, especially if you’re replacing a lost or faulty original.