GOOLOO GT4000S
#1 in Heavy dutyFull review
A compact pack that covers big V8s and most diesel pickups and recharges in about an hour over USB-C. A strong pick for truck owners who also want a laptop power bank.
Amazon $99.99$99.99
The GOOLOO GT4000S rates 4.4 among heavy duty jump starters; the GOOLOO GP3000 rates 4.1 among trucks and v8s ones. The GOOLOO GP3000 costs $40.04 less ($59.95 vs $99.99).
GOOLOO GP3000
A slim, inexpensive pack that covers most cars and gas pickups. A good value if you can live with a slow recharge.
Amazon $59.95$59.95
Prices were last checked October 22, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
These two sit in different engine size classes (heavy duty and trucks and v8s), and each is scored against the reference points for its own class, so a rating says how well each does among its own engine size peers. How we rank explains each factor.
| Factor weight | GOOLOO GT4000S | GOOLOO GP3000 |
|---|---|---|
| Overall rating | 4.4/5 | 4.1/5 |
| Value 40% | 100 $99.99 for its size | 100 $59.95 for its size |
| Features 35% | 90 manual override, rated to -4 °F, USB-C charging, IP65 | 70 manual override, rated to -4 °F, USB-C charging |
| Capacity 15% | 50 capacity not published in Wh (neutral score used) | 50 capacity not published in Wh (neutral score used) |
| Warranty 10% | 50 warranty not published (neutral score used) | 25 1.5-year warranty |
Specifications
| GOOLOO GT4000S | GOOLOO GP3000 | |
|---|---|---|
| Starting | ||
| Rated engines | 12 L gas, 10 L diesel | 9 L gas, 7 L diesel |
| Peak amps (maker) | 4,000 A | 3,000 A |
| Voltage | 12 V | 12 V |
| Manual override | Yes | Yes |
| Lowest operating temperature | -4 °F | -4 °F |
| Battery and charging | ||
| Chemistry | Lithium-ion | Lithium-ion |
| Capacity (mAh) | 20,000 mAh | 16,000 mAh |
| USB-C input | 100 W | 15 W |
| Recharge time | 1.2 hours | 5 hours |
| USB outputs | USB-C 100 W, USB-A 18 W, 15 V DC 10 A | USB-C 15 W, USB-A QC 3.0, USB-A 5 V/2.1 A, 15 V DC 10 A |
| Build | ||
| Flashlight | Yes | Yes |
| Air compressor | No | No |
| Water resistance | IP65 | - |
| Dimensions | 9.05 x 3.93 x 2.12 in | 8.97 x 3.92 x 1.29 in |
| Weight | - | 1.4 lb |
| Warranty | - | 1.5 years |