AstroAI S8 Air
#2 in Cars and SUVsFull review
A combined jump starter and tire inflator for small and mid-size cars. Good for drivers who want one compact roadside kit, not for trucks.
Amazon $59.99$59.99
The AstroAI S8 Air is the better jump starter overall, rated 3.7 to 3.1. The AstroAI S8 Air leads on value. The NOCO Boost X GBX45 wins on features. The AstroAI S8 Air costs $64.96 less ($59.99 vs $124.95).
NOCO Boost X GBX45
#5 in Cars and SUVsFull review
For car and small-SUV owners who want a compact pack that refills fast from any USB-C charger. It costs a little more than the GB40 but recharges several times faster.
Amazon $124.95$124.95
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 AstroAI S8 Air for value ($59.99 for its size vs $124.95 for its size).
- Choose the NOCO Boost X GBX45 for features (manual override, rated to -4 °F, USB-C charging, IP65 vs rated to -4 °F).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every cars and suvs jump starter; a clear win is highlighted. How we rank explains each one.
| Factor weight | AstroAI S8 Air | NOCO Boost X GBX45 |
|---|---|---|
| Overall rating | 3.7/5 | 3.1/5 |
| Value 40% | 82 $59.99 for its size | 23 $124.95 for its size |
| Features 35% | 50 rated to -4 °F | 90 manual override, rated to -4 °F, USB-C charging, IP65 |
| Capacity 15% | 50 capacity not published in Wh (neutral score used) | 28 31 Wh battery |
| Warranty 10% | 50 warranty not published (neutral score used) | 0 1-year warranty |
Specifications
| AstroAI S8 Air | NOCO Boost X GBX45 | |
|---|---|---|
| Starting | ||
| Rated engines | 6 L gas, 3 L diesel | 6.5 L gas, 4 L diesel |
| Peak amps (maker) | 3,000 A | 1,250 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 | - | 31 Wh |
| Capacity (mAh) | 10,000 mAh | - |
| USB-C input | - | 60 W |
| Recharge time | - | 0.8 hours |
| USB outputs | - | USB-C 60 W, USB-A 10 W |
| Build | ||
| Flashlight | Yes | Yes |
| Air compressor | Yes | No |
| Water resistance | - | IP65 |
| Dimensions | - | 6.83 x 3.28 x 2.08 in |
| Weight | 2.4 lb | 2.2 lb |
| Warranty | - | 1 year |
| Released | - | 2021-11 |