AstroAI S8
#1 in Cars and SUVsFull review
A tiny, cheap starter for four- and six-cylinder cars. Fine as a glovebox backup, but not for trucks or V8s.
Amazon $42.19$42.19
The AstroAI S8 is the better jump starter overall, rated 4.0 to 3.8. The AstroAI S8 leads on value and capacity. The AstroAI S8 costs $9.10 less ($42.19 vs $51.29).
Schumacher SL1672
#2 in Cars and SUVsFull review
For drivers of four- and six-cylinder cars who want a cheap glove box pack with an override for dead batteries. V8 and diesel owners need a bigger model such as the SL1674.
Amazon $51.29$51.29
Prices were last checked October 30, 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 for value ($42.19 for its size vs $51.29 for its size) and capacity (29.6 Wh battery vs 23.7 Wh battery).
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 | Schumacher SL1672 |
|---|---|---|
| Overall rating | 4.0/5 | 3.8/5 |
| Value 40% | 98 $42.19 for its size | 90 $51.29 for its size |
| Features 35% | 67 manual override, rated to -4 °F, USB-C charging | 65 manual override, USB-C charging |
| Capacity 15% | 24 29.6 Wh battery | 9 23.7 Wh battery |
| Warranty 10% | 50 2-year warranty | 50 2-year warranty |
Specifications
| AstroAI S8 | Schumacher SL1672 | |
|---|---|---|
| Starting | ||
| Rated engines | 6 L gas, 3 L diesel | 6 L gas, 3 L diesel |
| Peak amps (maker) | 1,500 A | 1,000 A |
| Voltage | 12 V | 12 V |
| Manual override | Yes | Yes |
| Lowest operating temperature | -4 °F | - |
| Battery and charging | ||
| Chemistry | Lithium-ion | Lithium-ion |
| Capacity | 29.6 Wh | 23.7 Wh |
| USB-C input | 10 W | 15 W |
| Recharge time | - | 3 hours |
| USB outputs | USB-A 5 V/2.1 A | USB-C 3 A, USB-A 3 A, 10 W wireless pad |
| Build | ||
| Flashlight | Yes | Yes |
| Air compressor | No | No |
| Dimensions | 7.9 x 4.5 x 3.7 in | 6.98 x 3.43 x 1.42 in |
| Weight | 0.9 lb | 1.6 lb |
| Warranty | 2 years | 2 years |
| Released | 2025-03 | 2024-09 |