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 is the better jump starter overall, rated 4.4 to 4.0. The GOOLOO GT4000S leads on features. The DBPOWER Z07 5000A costs $55.20 less ($44.79 vs $99.99).
DBPOWER Z07 5000A
#2 in Heavy dutyFull review
A cheap, high-rated pack for cars and V8 trucks with IP65 sealing. A budget pick, but confirm it handles a fully dead battery before relying on it.
Amazon $44.79$44.79
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.
Which should you buy?
- Choose the GOOLOO GT4000S for features (manual override, rated to -4 °F, USB-C charging, IP65 vs rated to -4 °F, IP65).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every heavy duty jump starter; a clear win is highlighted. How we rank explains each one.
| Factor weight | GOOLOO GT4000S | DBPOWER Z07 5000A |
|---|---|---|
| Overall rating | 4.4/5 | 4.0/5 |
| Value 40% | 100 $99.99 for its size | 100 $44.79 for its size |
| Features 35% | 90 manual override, rated to -4 °F, USB-C charging, IP65 | 60 rated to -4 °F, IP65 |
| Capacity 15% | 50 capacity not published in Wh (neutral score used) | 42 74 Wh battery |
| Warranty 10% | 50 warranty not published (neutral score used) | 50 2-year warranty |
Specifications
| GOOLOO GT4000S | DBPOWER Z07 5000A | |
|---|---|---|
| Starting | ||
| Rated engines | 12 L gas, 10 L diesel | 10 L gas, 8 L diesel |
| Peak amps (maker) | 4,000 A | 5,000 A |
| Voltage | 12 V | 12 V |
| Manual override | Yes | - |
| Lowest operating temperature | -4 °F | -4 °F |
| Battery and charging | ||
| Chemistry | Lithium-ion | Lithium-ion |
| Capacity | - | 74 Wh |
| Capacity (mAh) | 20,000 mAh | - |
| USB-C input | 100 W | - |
| Recharge time | 1.2 hours | - |
| USB outputs | USB-C 100 W, USB-A 18 W, 15 V DC 10 A | USB-A 5 V/3 A, USB-A 5 V/2.1 A |
| Build | ||
| Flashlight | Yes | Yes |
| Air compressor | No | No |
| Water resistance | IP65 | IP65 |
| Dimensions | 9.05 x 3.93 x 2.12 in | 7.36 x 3.79 x 1.81 in |
| Weight | - | 1.3 lb |
| Warranty | - | 2 years |