For mechanics and fleet yards that start V8 trucks and diesels all day and want real cranking amp ratings. Too heavy for most drivers to carry in a car.
Amazon $161.77The Schumacher DSR165 and the Clore Jump-N-Carry JNC770R are evenly matched, rated 2.8 and 2.8. The Schumacher DSR165 costs $3.22 less ($161.77 vs $164.99).
For shops, fleets and enthusiasts who want a durable, repairable booster that lives on a charger. Drivers who want something for the car should get a lithium pack.
Amazon $164.99Prices 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 trucks and v8s jump starter; a clear win is highlighted. How we rank explains each one.
| Factor weight | Schumacher DSR165 | Clore Jump-N-Carry JNC770R |
|---|---|---|
| Overall rating | 2.8/5 | 2.8/5 |
| Value 40% | 46 $161.77 for its size | 45 $164.99 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 DSR165 | Clore Jump-N-Carry JNC770R | |
|---|---|---|
| Starting | ||
| Rated engines | 8-cylinder gas and 6-cylinder diesel engines (no liter rating) | Cars, trucks, SUVs and light commercial vehicles (no liter rating) |
| Peak amps (maker) | 2,200 A | 1,700 A |
| Cranking amps | 525 A | 425 A |
| Cold cranking amps | 350 A | - |
| Voltage | 12 V | 12 V |
| Battery and charging | ||
| Chemistry | Lead-acid (AGM) | Lead-acid (AGM) |
| USB outputs | USB-A 2.1 A, 12 V DC outlet | USB-A 2.1 A and 1.1 A |
| Build | ||
| Flashlight | No | Yes |
| Air compressor | No | No |
| Dimensions | 12.9 x 5.5 x 16.7 in | - |
| Weight | 18.7 lb | 23 lb |
| Warranty | 1 year | 1 year |
| Released | 2024-06 | 2016-07 |
