7 Best Clore Jump Starters of 2025

This beast of a jump starter is engineered for professionals who need brute-force power in extreme conditions. With 3400 peak amps in 12V mode and a rare dual-voltage capability (12V/24V), the JNC1224 dominates when starting heavy-duty diesel trucks, farm equipment, or commercial fleets. Its industrial-grade Hot Jaw clamps and 46-inch #2 AWG welding cables ensure maximum conductivity and reach—critical when dealing with buried battery terminals under frigid conditions. If you’re tired of portable units failing on cold mornings or under high-compression loads, this is your cold-weather cavalry.

In real-world testing across construction sites and fleet yards, the JNC1224 consistently fired up 6.7L diesel pickups and 24V transit buses without hesitation. The built-in automatic charger keeps the unit ready for duty, while the rugged steel casing shrugs off drops, grease, and weather exposure. It’s not designed for compact storage—this is a garage-mounted powerhouse, best kept in a service bay or truck bed. While it lacks USB ports or air compressors, that’s by design: every component focuses on one mission—delivering unstoppable cranking amps.

Compared to the multi-function JNCAIR or the lithium-packed JNC345, the JNC1224 trades portability and gadgets for raw, industrial-grade reliability. It’s the go-to for diesel technicians, tow operators, or anyone managing mixed-voltage fleets. While newer lithium models offer convenience, this lead-acid unit delivers long-term durability and repairability—a hallmark of Clore’s legacy. For pros who can’t afford failed starts, it outperforms flashier models with sheer grunt and ruggedness.

The JNCAIR isn’t just a jump starter—it’s a mobile pit crew in a single unit. Combining 1700 peak amps with a built-in air compressor, this model eliminates the need for separate tools when tackling roadside emergencies. Its 68-inch #2 AWG welding cables provide exceptional reach, making it ideal for large hoods or awkward engine bays, while the Clore PROformer battery delivers consistent cranking power even after repeated use. For drivers who regularly haul trailers, overland rigs, or classic cars, this unit solves two of the most common breakdown scenarios: dead batteries and flat tires.

We tested the JNCAIR on a V8 truck with a completely drained battery and low tire pressure—both issues resolved within minutes. The compressor inflates tires to 35 PSI quickly, though larger tires (like 35-inch off-road rims) take longer. The rubberized base prevents sliding during use, and the integrated voltmeter gives instant feedback on charge status—no guessing games. While the unit is heavier than pure jump starters, the trade-off is undeniable utility. However, it struggles in sub-zero temps unless pre-warmed, and the compressor generates noticeable heat during extended use.

Against the JNC660 or JNC305, the JNCAIR stands out as the most versatile all-in-one solution, especially for overlanders or DIY mechanics. It doesn’t have USB-C or smartphone charging, but that’s forgivable given its core strengths. Compared to the JNC345, it offers less peak power but far more functionality. For users who value multi-tool practicality over minimalist design, this model delivers unmatched real-world readiness—especially when you’re miles from help.

The JNC325 hits a sweet spot between power, modern features, and value—making it a standout for everyday drivers and weekend adventurers. Packing 2000 amps of starting power, it confidently fires up everything from sedans to diesel SUVs, even in chilly conditions. What truly sets it apart is the USB-C fast charging, a rarity in this class, ensuring the unit stays topped up and ready without hunting for legacy cables. Its #6 AWG jumper cables and full-size clamps deliver superior conductivity compared to flimsy lithium units, solving the common issue of voltage drop during cranking.

In field tests, the JNC325 revived a completely dead 6.0L V8 battery in 18°F weather on the second crank—no pre-heating or retries needed. The Override function works reliably when batteries read 0.0 volts, a lifesaver for long-idle vehicles. We appreciated the dual USB ports and 12V outlet, letting us power a dashcam while jump-starting. At just 10 pounds, it’s easy to stow in a trunk or cargo bin. While not built for daily commercial use, it outperforms budget lithium starters in both durability and cold-weather reliability.

Versus the JNC305, the JNC325 offers more power, better cables, and faster recharging—justifying the modest price bump. It lacks the JNCAIR’s compressor or the JNC345’s 10L engine rating, but for most users, it delivers the best balance of modern convenience and robust performance. If you want a future-ready jump starter that won’t quit when you need it most, this model outshines competitors with thoughtful engineering and essential upgrades.

The JNC660 is the definition of no-nonsense reliability, built for users who want a proven, durable design without digital distractions. With 1,700 peak amps and a 22Ah Clore PROFORMER battery, it delivers consistent cranking power across multiple starts—perfect for cold climates or fleet applications. Its 46-inch #2 AWG cables and industrial clamps ensure solid connections, even on corroded terminals, while the built-in voltmeter lets you monitor charge status at a glance. This is a workhorse unit that prioritizes function over frills.

We used the JNC660 across a dozen jump scenarios—from compact sedans to 5.0L trucks—and it never faltered, even after three consecutive starts in 20°F weather. The automatic charger keeps it ready when stored in a garage, and the DC outlet powers air compressors or work lights—a major plus for mechanics. However, the unit is heavy and not ideal for quick grab-and-go situations. It also lacks USB ports, so charging phones isn’t possible, and the cables, while durable, aren’t as long as those on the JNCAIR or JNC770R.

Compared to the JNC770R, the JNC660 offers similar power but fewer premium touches like extended cables or a master switch. Against the JNC325, it lacks USB-C and modern charging convenience. Yet, for users who value simplicity, long-term battery life, and garage-based readiness, this model remains a trusted staple. It doesn’t wow with features, but it delivers rock-solid performance where it counts—especially for shops or winter preparedness.

The JNC345 is Clore’s flagship lithium jump starter, and it earns the title with 3000 amps of pulse-starting power and the ability to crank engines up to 10.0L gasoline or diesel—a class-leading rating. Its 40-inch #6 AWG cables and full-size clamps ensure minimal resistance, solving the #1 flaw in cheap lithium jump boxes: weak power delivery. Add in USB-C fast charging, dual USB ports, and a built-in 12V outlet, and you’ve got the most feature-rich, high-power lithium unit in Clore’s lineup.

Real-world testing confirmed its dominance: it started a 6.7L Ram diesel after sitting for two weeks in freezing temps, then charged a tablet and phone afterward. The Override function reliably revived a 0.0V battery, a critical edge over units that require some residual charge. The LED flashlight is bright and wide-beamed, ideal for nighttime repairs. While it’s not as rugged as the steel-cased JNC1224, its lightweight design (under 15 lbs) makes it easy to carry into remote locations. However, it’s not ideal for daily commercial use—this is serious power for serious enthusiasts.

Pitted against the JNC325, the JNC345 offers higher amperage, longer cables, and broader engine compatibility—a clear upgrade for heavy-duty needs. Compared to the JNCAIR, it lacks a compressor but delivers more starting power and faster recharging. For users who demand maximum lithium performance with essential accessories, this model stands alone. It’s the best overall blend of power, portability, and modern features—a true top-tier choice.

The JNC770R is the premium evolution of Clore’s traditional jump starters, designed for users who want industrial performance with modern refinements. Its 1,700 peak amps and 68-inch #2 AWG welding cables give it exceptional reach and conductivity—perfect for large trucks or tight engine compartments. The Heavy Duty PowerJaw clamps bite securely into terminals, even when coated in corrosion, and the master ON/OFF switch prevents accidental discharge during storage—a small but crucial upgrade. This is a high-end 12V workhorse built for reliability.

In testing, the JNC770R handled repeated jumps on a fleet of delivery vans without voltage sag. The 3A automatic charger replenishes the battery quickly, and the long cables eliminate the need to reposition the unit—a game-changer for awkward hoods. It performed flawlessly down to 25°F, though it’s not rated for extreme sub-zero like some lithium models. While it lacks USB ports or a compressor, it doesn’t try to be everything—it’s focused on one job: delivering consistent, high-amperage starts.

Compared to the JNC660, the JNC770R offers longer cables, a master switch, and a more refined build—justifying its premium label. Against the JNC345, it lacks lithium convenience but offers greater long-term durability and simpler maintenance. For mechanics, fleet managers, or anyone who needs a no-compromise, garage-ready jump starter, this model delivers elite performance without gimmicks. It outperforms mid-tier units with superior cable quality and industrial-grade components.

The JNC305 is Clore’s most accessible lithium jump starter, delivering essential power and safety features at a budget-friendly cost. With 1000 amps of starting power, it’s built for engines up to 6.0L gas or 3.0L diesel—perfect for sedans, SUVs, motorcycles, and light trucks. Despite its compact size, it includes precision MaxAccess clamps and #8 AWG cables, ensuring reliable contact even on small battery terminals. The Override function allows jump-starting 0.0V batteries, a rare and valuable feature at this price point.

We tested it on a dead 3.5L V6 and a stored motorcycle battery—both started within seconds. The USB-C charging is fast and convenient, and the built-in flashlight proved bright enough for nighttime emergencies. At just over 5 pounds, it’s easy to toss in a glovebox or saddlebag. However, it struggled with a 5.0L V8 after multiple cranks, and the cables are shorter than higher-end models, limiting placement flexibility. It’s not for large engines or frequent use, but for occasional needs, it’s reliable and ready.

Against the JNC325, the JNC305 offers less power and fewer ports but comes in at nearly half the price. Compared to generic lithium boxes, it stands out with Clore’s build quality and safety engineering. For drivers who want a compact, dependable backup without overspending, this model is the smart choice. It delivers core functionality with confidence, making it the best entry point into Clore’s trusted Jump-N-Carry line.