Gooloo A3 vs A5: Which Jump Starter Fits You? (November 2026)
Pick the Gooloo A3 for its smaller size and 3000A rating, and the Gooloo A5 for more jump power and a bigger battery. In this Gooloo A3 vs A5 comparison, the A5 is the stronger all-rounder, while the A3 fits tighter spaces.
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Pick the Gooloo A3 for tight storage and the Gooloo A5 for heavy engines. In this Gooloo A3 vs A5 matchup, the A5 is the stronger all-rounder for most drivers, while the A3 wins on size.
Both are 12V lithium jump starters with built-in air compressors from the same brand. The A5 leads on jump power and battery size, but the A3 packs a full toolkit into a smaller body.
That split is the whole decision. Here is how the two compare on the specs that matter when your battery is dead in a parking lot.
Gooloo A3 vs A5: which should you buy?
Buy the Gooloo A5 if your garage holds a diesel truck or a big gas engine, and buy the Gooloo A3 if space in the trunk is tight. The A5 wins overall for most drivers because its 4000A rating and 20,000 mAh battery cover more vehicles.
The A3 remains a smart pick for smaller cars and anyone who wants the smallest possible kit. Its 3000A rating covers 9.0L gas and 6.5L diesel, which handles most passenger cars, SUVs and light trucks.
Think about what you drive first, then about where the unit will live. A jump starter you can't fit or lift easily tends to stay home, which defeats the purpose.
What the two units share
Both run Gooloo's JUMPCORE jump-starting system and SUPERSAFE protection package. Each one has a BOOST button for low-voltage batteries and a working range of -4°F to 140°F.
Both include smart jumper cables, a pump tube, 5 air nozzles and a carrying bag. Each carries Gooloo's 18-month warranty.
Both also act as a flashlight, a tire inflator and a power bank. Neither one needs a wall outlet to start a car.
Where they differ most
Jump power and battery capacity separate the pair. The A5 delivers up to 4000A peak, while the A3 is rated at 3000A peak.
The A5 also has a built-in 45W USB-C cable for charging phones and tablets. The A3 handles device charging through its USB ports.
The A3 counters with a smaller shell and a customizable inflation setting among its 5 modes. Its screen is built to stay readable in direct sun.
Jump power and engine coverage
The A5 starts bigger engines, so it is the safer buy for diesel and full-size gas motors. Its 4000A peak rating covers all gas engines and diesel up to 10.0L.
The A3 is rated at 3000A and covers gas engines up to 9.0L and diesel up to 6.5L. That range fits most sedans, crossovers and half-ton gas trucks.
If you own a diesel pickup or a large work van, the A3's 6.5L diesel ceiling can leave you short. The A5's 10.0L diesel figure gives you headroom for cold mornings and weak batteries.
Both units include a BOOST function for deeply discharged batteries. Gooloo says pressing it forces a jump even when voltage is extremely low.
Engine displacement isn't the only factor, but it's the clearest guide. Match your engine size to the rating before you buy.
Our Gooloo jump starter guide lists the full range if you want to compare more models.
Gas engines up to 9.0L
The A3's 9.0L gas rating covers nearly every gasoline vehicle on the road. That includes V8 pickups and large SUVs.
For a family with two gas cars, the A3's rating is plenty. You won't gain much from the A5's extra amperage unless you also own a diesel.
Diesel up to 10.0L
Diesel buyers should lean toward the A5. Its 10.0L diesel rating handles heavy-duty trucks that the A3's 6.5L figure can't officially cover.
Diesel engines need more cranking current, especially in cold weather. The A5's extra peak amps give you more margin on a frosty morning.
Air compressor performance
Both units inflate tires, but the A5's pump moves air faster and reaches higher pressure. The A5 tops out at 160 PSI, compared with 150 PSI on the A3.
Gooloo says the A5's 25 mm motor inflates a 285/70 R17 pickup tire from 30 to 36 PSI in 2 minutes. It fills a 195/65 R15 sedan tire in 30 seconds.
The A3's pump inflates a Tesla Model 3 or Y tire from 30 to 36 PSI in about 1 minute. Its airflow is rated at 35L per minute.
Both pumps stop automatically when they reach your preset pressure. Both also include a digital gauge and a bright display.
If you tow a trailer or drive a truck with big tires, the A5's higher pressure and faster fill save time. For a compact car, the A3's pump is more than enough.
Our WOLFBOX 4000A review covers another high-amp option with a built-in inflator if you want a third point of comparison.
Inflation modes and nozzles
The A3 offers 5 modes: SUV, car, bike, ball and a customizable setting. It ships with 5 nozzles for those jobs.
The A5 also has 5 modes and 5 nozzles. Its auto-stop works the same way, cutting the pump off at your target pressure.
How long the pump runs
Gooloo rates the A3 for up to 45 minutes of continuous wireless inflation on a full charge. The A5 runs up to 50 minutes.
That difference matters if you air up several vehicles or a trailer in one session. For a single top-up, both are quick.
Battery capacity and device charging
The A5 carries the bigger battery and the more useful charging cable for phones. Its 20,000 mAh rated capacity is well above the A3's 12,000 mAh.
Gooloo says the A5 handles up to 50 engine starts on one charge. It also lists up to 99 hours of flashlight use depending on the mode.
The A5's built-in 45W USB-C cable is output-only, so it charges your devices but not the jump starter itself. The A3 uses USB ports for the same job.
For a road trip with phones and tablets to keep alive, the A5's larger reserve and built-in cable are convenient. The A3 still charges devices, just from a smaller tank.
Jump starts per charge
The A3's 12,000 mAh battery covers the jumps most drivers need between charges. Gooloo puts the A5's ceiling at 50 engine starts per charge.
Charging phones and tablets
Both work as power banks, and the A5's 45W output is the faster option for modern phones and small tablets.
The A3's USB ports handle the same devices at lower output. Neither unit is a substitute for a dedicated high-capacity power bank on a long trip.
Size, weight and storage
The A3 is the smaller and lighter unit, so it fits more storage spots. It measures 4.96 x 5.87 x 2.3 inches, against the A5's 3.2 pounds.
The A5 measures 8.98 x 5.55 x 2.4 inches. That extra length comes from the larger battery and the built-in cable.
Check your storage space before ordering. A glovebox or under-seat compartment that swallows the A3 may not take the A5.
The one practical tip: measure the spot where the unit will live.
If the jump starter rides in a trunk with groceries and sports gear, the A3's smaller footprint is easier to tuck away. If it stays in a garage or truck bed box, size matters less.
Fitting the trunk or glovebox
The A3's compact body suits tight spots. Its 2.3-inch height helps it slide under a seat or into a shallow compartment.
Carrying it to another vehicle
The A5's 3.2 pounds is still light enough to carry. Its longer body needs a slightly bigger bag, but both come with a carrying case.
Features and extras
The A3 offers more built-in tools, while the A5 adds a faster charging cable and a larger display. The A3 is billed as a 7-in-1 unit; the A5 is a 6-in-1 kit.
The A3's seven tools are a jump starter, tire inflator, power bank, LED flashlight, bike pump, ball pump and digital pressure gauge. That's a full roadside kit in one body.
The A5 combines a jump starter, tire inflator, ball pump, tire pressure gauge, power bank and LED light. Its headline extra is the built-in 45W USB-C cable.
Both have an LED screen. The A5's color display has a rotating status ring and 2000-nit brightness.
The A3's screen is also built to stay readable in sunlight.
Flashlight and emergency tools
Both units include an LED light for night-time jumps. Gooloo rates the A5's light for up to 99 hours depending on mode.
Safety protections
Both carry Gooloo's SUPERSAFE system. The A3 lists 10 protections, including reverse connection, overcurrent, overheating and overcharge protection.
Who should buy the Gooloo A3?
Buy the Gooloo A3 if you drive a gas car or light diesel and want the smallest kit that still covers the basics. Its 3000A rating and compact body make it the easier unit to store and carry.
It's also the better fit if you want the most tools in one box. The 7-in-1 design covers jumps, tire inflation, bike and ball pumping, device charging and light.
Pick the A3 for a sedan, a crossover or a gas pickup used for weekend projects. It's also a good choice for a second vehicle or a teen driver's first car kit.
Skip it if you own a heavy diesel or a very large gas engine. In that case, the A3's engine ceiling is the limiting factor.
For a deeper look at the brand's lineup, read our Gooloo GT4000S review.
Who should buy the Gooloo A5?
Buy the Gooloo A5 if you need maximum jump power, a bigger battery or a built-in USB-C cable. Its 4000A rating covers all gas engines and diesel up to 10.0L.
The A5 also suits drivers who air up big tires often. Its 160 PSI pump and faster fill times help with pickup and SUV tires.
It's the better road-trip companion for a family with several devices to charge. The 20,000 mAh battery and 45W cable keep phones and tablets topped up.
Skip it if trunk space is very tight or you only drive a compact gas car. The A3 does that job in a smaller package.
If you're weighing the brand against another major name, our NOCO vs Gooloo car jump starters comparison covers the differences.
Gooloo A3 vs A5: the verdict
For most drivers, the Gooloo A5 is the better buy because its 4000A rating and 20,000 mAh battery cover more vehicles. The A3 remains the smart pick for tight storage and smaller engines.
The A5's extra jump power is the deciding factor. It handles diesel up to 10.0L and all gas engines, so one unit can serve a mixed household or a work truck.
Choose the A3 when size and tool count matter more than raw power. Its 3000A rating covers most gas cars, and its 7-in-1 design packs the most function into the least space.
Either way, charge the unit fully before first use and top it up at least every 3 months in storage. Keep it within the -4°F to 140°F range and out of direct sun.
That care keeps the Gooloo A3 vs A5 choice working for years.
Frequently asked questions
Is the Gooloo A5 more powerful than the A3?
Yes. The A5 is rated at 4000A peak and covers all gas engines and up to 10.0L diesel.
The A3 is rated at 3000A peak and covers up to 9.0L gas and 6.5L diesel.
Which Gooloo jump starter is smaller?
The A3 is smaller. It measures 4.96 x 5.87 x 2.3 inches and weighs less than the A5, which measures 8.98 x 5.55 x 2.4 inches and weighs 3.2 pounds.
Do both Gooloo models have an air compressor?
Yes. The A3 has a 150 PSI pump with 5 inflation modes and 5 nozzles.
The A5 has a 160 PSI pump with 5 modes and 5 nozzles plus a 25 mm motor.
Which model has more battery capacity?
The A5 has the larger battery, with a 20,000 mAh rated capacity. The A3 has a 12,000 mAh battery.
Gooloo says the A5 can handle up to 50 engine starts on one charge.
Which Gooloo jump starter should I buy for a diesel truck?
The A5 is the safer choice for a diesel truck. Its 4000A rating covers diesel engines up to 10.0L, while the A3 tops out at 6.5L for diesel.
