Schumacher DSR166
#17 in Heavy dutyFull review
For truck shops, fleets and farms that need to start 24 V diesel equipment as well as 12 V vehicles. Anyone with only 12 V vehicles should buy a lighter, cheaper booster.
Amazon $337.27$337.27
The Schumacher DSR166 and the Clore Jump-N-Carry JNC1224 are evenly matched, rated 2.6 and 2.6. The Schumacher DSR166 costs $11.80 less ($337.27 vs $349.07).
Clore Jump-N-Carry JNC1224
#18 in Heavy dutyFull review
For fleets, farms and heavy-equipment shops that start both 12 V and 24 V machines. It is far too heavy and costly for a personal vehicle.
Amazon $349.07$349.07
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.
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 | Schumacher DSR166 | Clore Jump-N-Carry JNC1224 |
|---|---|---|
| Overall rating | 2.6/5 | 2.6/5 |
| Value 40% | 32 $337.27 for its size | 29 $349.07 for its size |
| Features 35% | 35 basic | 35 basic |
| Capacity 15% | 50 capacity not published in Wh (neutral score used) | 50 capacity not published in Wh (neutral score used) |
| Warranty 10% | 0 1-year warranty | 0 1-year warranty |
Specifications
| Schumacher DSR166 | Clore Jump-N-Carry JNC1224 | |
|---|---|---|
| Starting | ||
| Rated engines | Cars, trucks, SUVs and 24 V semi-trucks (no liter rating) | Most cars, light trucks, watercraft and implements, plus 24 V systems (no liter rating) |
| Peak amps (maker) | 4,400 A | 3,400 A |
| Cranking amps | 750 A | 850 A |
| Cold cranking amps | 525 A | - |
| Voltage | 12/24 V | 12/24 V |
| Battery and charging | ||
| Chemistry | Lead-acid (AGM) | Lead-acid (AGM) |
| Recharge time | 48 hours | - |
| USB outputs | USB-A 2.1 A, 12 V DC outlet | - |
| Build | ||
| Flashlight | No | No |
| Air compressor | No | No |
| Weight | 41.2 lb | 40 lb |
| Warranty | 1 year | 1 year |
| Released | 2024-06 | - |