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 3.3. The GOOLOO GT4000S leads on value. The GOOLOO GT4000S costs $269.96 less ($99.99 vs $369.95).
NOCO Boost X GBX155
#5 in Heavy dutyFull review
For heavy-duty trucks, diesels, boats and fleets that need the most starting power in a lithium pack. Most car owners will be well served by something smaller and cheaper.
Amazon $369.95$369.95
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.
Which should you buy?
- Choose the GOOLOO GT4000S for value ($99.99 for its size vs $369.95 for its size).
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 | NOCO Boost X GBX155 |
|---|---|---|
| Overall rating | 4.4/5 | 3.3/5 |
| Value 40% | 100 $99.99 for its size | 23 $369.95 for its size |
| Features 35% | 90 manual override, rated to -4 °F, USB-C charging, IP65 | 90 manual override, rated to -4 °F, USB-C charging, IP65 |
| Capacity 15% | 50 capacity not published in Wh (neutral score used) | 74 99 Wh battery |
| Warranty 10% | 50 warranty not published (neutral score used) | 0 1-year warranty |
Specifications
| GOOLOO GT4000S | NOCO Boost X GBX155 | |
|---|---|---|
| Starting | ||
| Rated engines | 12 L gas, 10 L diesel | 10 L gas, 8 L diesel |
| Peak amps (maker) | 4,000 A | 4,250 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 | - | 99 Wh |
| Capacity (mAh) | 20,000 mAh | - |
| USB-C input | 100 W | 60 W |
| Recharge time | 1.2 hours | 2.7 hours |
| USB outputs | USB-C 100 W, USB-A 18 W, 15 V DC 10 A | USB-C 60 W, USB-A 10 W |
| Build | ||
| Flashlight | Yes | Yes |
| Air compressor | No | No |
| Water resistance | IP65 | IP65 |
| Dimensions | 9.05 x 3.93 x 2.12 in | 12.03 x 6.89 x 2.72 in |
| Weight | - | 5.8 lb |
| Warranty | - | 1 year |
| Released | - | 2021-11 |