Clore Jump-N-Carry JNC660 Review
The 18-pound lead-acid jump box that shops have trusted for twenty years — heavy, old-school, and tireless on cold, stubborn engines.
The verdict
The JNC660 is the anti-gadget. It's an 18-lb box with a sealed AGM battery, 46-inch heavy cables, and a voltmeter, and it'll crank a big engine over and over with the sustained current that small lithium packs can't match. It's the right tool for a shop, a farm, a fleet, or a garage where it can live plugged in. It's the wrong tool for a glovebox — it's heavy, it needs regular recharging, and it has no USB or flashlight.
$126.02on Amazon
Price as of Aug 23, 12:44 AM ET — subject to change.
What we like
- +1,700 peak / 425 cranking amps of sustained lead-acid output — excellent on cold, hard-starting engines
- +46-inch #2 AWG clamp leads reach any battery, including trucks and boats
- +Built-in automatic charger — leave it plugged in and it's always ready
- +Voltmeter shows battery state at a glance; 12V DC outlet for accessories
- +Simple, rugged, and repairable — replacement batteries are available
What to know
- −18 lb and bulky — a garage or truck-bed tool, not something you carry in the cabin
- −Needs recharging every 90 days or so (lead-acid self-discharges)
- −No spark-proof smart clamps — you need to connect carefully in the right order
- −No USB ports or flashlight; it does one job
Full review
Before lithium packs, the JNC660 was the jump starter, and in a lot of service bays it still is. The reason is the battery chemistry: a 22Ah AGM cell delivers sustained cranking current without the voltage sag a small lithium pack experiences on a long crank, and it does it at any temperature you'd realistically be working in. When a diesel at 0°F needs ten seconds of cranking instead of two, that matters.
The four-foot #2 gauge leads are the other practical advantage. You can set the box on the ground and still reach a battery mounted in the trunk, under a rear seat, or behind the fender of a work truck — no balancing a brick on the intake manifold. The voltmeter tells you the state of both the box and the dead battery, and the built-in charger means it lives on a shelf with the cord plugged in and needs no thought.
What it isn't is convenient. It weighs as much as a bowling ball, it has no spark-proof smart clamps (connect positive first, negative to ground, and pay attention), and it self-discharges like any lead-acid battery, so it needs a top-off every few months if it's not left plugged in. If you want a pack for the family sedan's glovebox, buy a GB40. If you want the thing that starts the plow truck every morning for the next decade, this is it.
Best for: Shops, farms, fleets, and home garages — anywhere the jump box can stay plugged in and the engine it has to start is big and cold.
Specifications
| Peak amps | 1,700A |
|---|---|
| Cranking amps | 425A |
| Battery | 22Ah sealed AGM lead-acid (Clore PROFORMER) |
| Cables | 46" #2 AWG leads with heavy-duty clamps |
| Ports | 12V DC outlet; built-in AC charger |
| Display | Voltmeter |
| Safety | Power switch, overload-protected outlet (no smart clamp protection) |
| Weight | ~18 lb |
| Warranty | 1 year |
Ready to get one?
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$126.02on Amazon
Price as of Aug 23, 12:44 AM ET — subject to change.
Head-to-head comparisons
Alternatives in Jump Starters
Best Overall
NOCO Boost HD GB70
2,000 amps, rated for V8 gas and 6.0L diesel, with the safest clamps in the business — the one jump starter that covers almost every driveway.
Premium Pick
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4,250 amps for big diesels, plow trucks, and RVs — with 65W USB-C charging that makes it a serious power bank too.
Best Value
NOCO Boost Plus GB40
The best-selling jump starter in the world for good reason — 1,000A, glovebox-sized, and it starts every four- and six-cylinder car on the road.