Head-to-head comparison · Jump Starters
Clore Jump-N-Carry JNC770R vs JNC660
Both are 1,700-peak-amp, 425-cranking-amp lead-acid booster packs with #2 AWG cables and a built-in charger. The JNC770R adds 22 inches of cable, a master switch and USB ports, for 5 lb more.
By Watt Versus Editorial· Updated
This page was drafted with AI assistance from manufacturers' specs and manuals, and is checked by our editor.
Why the Clore Jump-N-Carry JNC770R Jump Starter wins
The same rated current with 68-inch leads instead of 46, a master on/off switch, two USB ports and a 3 A charger make the JNC770R the better shop pack. The JNC660 is the lighter choice when cable reach is not an issue.
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Clore Jump-N-Carry JNC770R Jump Starter
A 1,700-peak-amp, 425-cranking-amp lead-acid booster pack with 68-inch #2 AWG cables, a 3 A built-in charger and two USB ports.
Clore Jump-N-Carry JNC660 Jump Starter
A 1,700-peak-amp, 425-cranking-amp lead-acid booster pack with 46-inch #2 AWG cables and a built-in automatic charger.
Side-by-side
Specs compared
| Specification | Clore Jump-N-Carry JNC770R Jump StarterOur pick | Clore Jump-N-Carry JNC660 Jump Starter |
|---|---|---|
| Editorial score | Editorial score:7.8/10 | Editorial score:7.7/10 |
| Best for | Best Shop Pack with 68-Inch Cables | Best Shop-Style Booster Pack |
| Peak current | 1,700 A (425 cranking amps) | 1,700 A (425 cranking amps) |
| Battery capacity | Sealed lead-acid (Clore PROFORMER); amp-hour rating not listed by Clore | Sealed lead-acid; amp-hour rating not listed by Clore |
| Cables | 68 in, #2 AWG welding cable, PowerJaw clamps rated to 1,000 A | 46 in, #2 AWG welding cable |
| USB output | 2 ports, 2.1 A and 1.1 A; plus a 12 V DC outlet | None listed; 12 V DC outlet with automatic overload protection |
| Recharge time | Built-in 3 A automatic charger; charge 24 hours before first use | Built-in automatic AC charger; charge 24 hours before first use |
| Weight | 23 lb | 18 lb |
| Warranty | 1 year | 1 year |
| Where to buy | Check Latest Price on Amazon (paid link) | Check Latest Price on Amazon (paid link) |
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At a glance
Key differences
- 1Cables: 68 in against 46 in, both #2 AWG
- 2USB: two ports (2.1 A and 1.1 A) against none listed
- 3Master on/off switch: yes against not listed
- 4Weight: 23 lb against 18 lb
- 5Peak and cranking amps: 1,700 A and 425 A for both
Product by product
Pros and cons
Clore Jump-N-Carry JNC770R Jump Starter
A shop and fleet booster with long cables that reach awkward battery posts and remote jump points. For a car trunk, a lithium starter such as the NOCO GB70 is a fraction of the weight.
Pros
- 68-inch #2 AWG cables, against 46 inches on the JNC660
- Master on/off switch keeps the clamps dead in storage
- Two USB ports and a 12 V outlet
- Built-in 3 A charger plugs into a wall outlet
Cons
- 23 lb, heavier than the 18 lb JNC660 and far heavier than lithium starters
- Clore publishes no engine-size rating
- Lead-acid pack needs a recharge every three months in storage
Clore Jump-N-Carry JNC660 Jump Starter
A garage and fleet tool: heavy, long-cabled and simple. For a car trunk or glovebox, a lithium starter is lighter and easier to store.
Pros
- Long 46-inch #2 AWG cables reach batteries that short lithium leads cannot
- Built-in automatic charger plugs straight into a wall outlet
- Voltmeter shows the pack's state of charge
- 12 V DC outlet with overload protection for accessories
Cons
- 18 lb, against 2.16 to 6 lb for the NOCO lithium starters
- Clore publishes no engine-size rating
- Lead-acid pack must be recharged every three months in storage
- No USB ports listed
Choose the Clore JNC770R if
- You jump trucks, buses or equipment with hard-to-reach posts.
- You want USB ports for a phone or a light.
Choose the Clore JNC660 if
- You want the lighter pack and 46-inch cables are enough.
Both need a recharge after every use and every three months in storage, per Clore. For a car, a lithium pack from the best jump starters is lighter.
Frequently asked questions
- What is the difference between the Clore JNC770R and JNC660?
- Both list 1,700 peak amps and 425 cranking amps. The JNC770R has 68-inch cables against 46, two USB ports and a master switch, and weighs 23 lb against 18 lb.
- Are Jump-N-Carry packs lithium?
- No. Both use sealed lead-acid batteries, according to Clore's manuals.
- Which has longer cables?
- The JNC770R, at 68 inches of #2 AWG cable.
Sources
The specifications and claims on this page come from these manufacturer documents. Figures are the manufacturers' own unless the text says otherwise.
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