{
  "category": {
    "slug": "jump-starters",
    "name": "Jump Starters",
    "description": "Portable lithium jump starters and booster packs; trickle chargers belong to Car Battery Chargers."
  },
  "url": "https://stierproducts.com/categories/jump-starters",
  "markdown": "https://stierproducts.com/categories/jump-starters.md",
  "updated": "2026-08-19T05:56:58.032Z",
  "productsRanked": 16,
  "summary": "On the stierproducts jump starters board, Gooloo GT6000 ranks #1 in A tier, ahead of NOCO Boost Plus GB40 (#2, A tier) and Wolfbox MV24 4000A (#3, A tier). The board ranks 16 jump starters from S (best) to F (avoid), last researched 19 Aug 2026, drawing on 253 outlet citations across the board. Placed in the bottom tiers as ones to avoid: Gooloo GT4000S, NOCO GB50, Gooloo A3, and 4 others.",
  "method": {
    "summary": "Each category is researched in four independent runs, one per lens (expert consensus, value, reliability, community pulse). Every run ranks a board of candidates that deliberately includes products buyers cross-shop but should avoid. Placements score on a ranked ladder (LP), and tiers are derived from LP, so no tier is ever assigned by hand.",
    "url": "https://stierproducts.com/methodology"
  },
  "license": {
    "name": "CC BY 4.0",
    "url": "https://creativecommons.org/licenses/by/4.0/",
    "terms": "https://stierproducts.com/license",
    "covers": [
      "text",
      "rankings",
      "tiers",
      "lp",
      "verdicts",
      "pros",
      "cons"
    ],
    "excludes": [
      "images"
    ],
    "imageRights": "Product photographs are not covered: they belong to their respective owners and are reproduced to illustrate the product being reviewed. Do not redistribute them under this licence."
  },
  "tierMeanings": {
    "S": "Exceptional. Finishes top run after run; capped at 3 slots per category.",
    "A": "Excellent. Strongly recommended, beaten only by the very best.",
    "B": "Good. A solid choice with real caveats worth knowing.",
    "C": "Fair. Acceptable in the right situation, outclassed at its price.",
    "D": "Weak. Hard to recommend when better options cost similar money.",
    "F": "Avoid. The evidence points you elsewhere."
  },
  "products": [
    {
      "rank": 1,
      "tier": "A",
      "lp": 819,
      "name": "Gooloo GT6000",
      "brand": "Gooloo",
      "slug": "gooloo-gt6000",
      "url": "https://stierproducts.com/products/gooloo-gt6000",
      "verdict": "Demonstrated reliable power in roadside situations, earning it a solid position.",
      "pros": [
        "Reliable power demonstrated in real-world tests",
        "6000 A peak output",
        "Robust build",
        "Reliable in extreme temps",
        "Drop-test proven"
      ],
      "citations": 36,
      "distinctOutlets": 30,
      "thinlySourced": false,
      "image": "https://stierproducts.com/images/products/gooloo-gt6000.webp"
    },
    {
      "rank": 2,
      "tier": "A",
      "lp": 731,
      "name": "NOCO Boost Plus GB40",
      "brand": "NOCO",
      "slug": "noco-boost-plus-gb40",
      "url": "https://stierproducts.com/products/noco-boost-plus-gb40",
      "verdict": "Consistently praised by owners for its reliability and performance, making it the top choice for emergency roadside assistance.",
      "pros": [
        "Widely endorsed by users for dependable power",
        "Compact size",
        "1000 A peak output",
        "UltraSafe clamps",
        "Proven longevity"
      ],
      "cons": [
        "Lower output compared to newer models",
        "Not ideal for large engines or frequent use"
      ],
      "citations": 29,
      "distinctOutlets": 28,
      "thinlySourced": false,
      "flaggedToAvoid": {
        "runs": 1,
        "ofRuns": 7
      },
      "image": "https://stierproducts.com/images/products/noco-boost-plus-gb40.webp"
    },
    {
      "rank": 3,
      "tier": "A",
      "lp": 650,
      "name": "Wolfbox MV24 4000A",
      "brand": "Wolfbox",
      "slug": "wolfbox-mv24-4000a",
      "url": "https://stierproducts.com/products/wolfbox-mv24-4000a",
      "verdict": "Regarded as a rugged must-have with high amperage and robust design, it stands out as a strong contender.",
      "pros": [
        "High amperage rating",
        "4000 A peak output",
        "Rugged chassis",
        "Reliable clamps",
        "Outperforms competitors"
      ],
      "citations": 11,
      "distinctOutlets": 10,
      "thinlySourced": false,
      "image": "https://stierproducts.com/images/products/wolfbox-mv24-4000a.webp"
    },
    {
      "rank": 4,
      "tier": "B",
      "lp": 582,
      "name": "NOCO Boost X GBX155",
      "brand": "NOCO",
      "slug": "noco-boost-x-gbx155",
      "url": "https://stierproducts.com/products/noco-boost-x-gbx155",
      "verdict": "Considered reliable based on community discussions, though lacking standout features in the evidence.",
      "pros": [
        "Reliable according to users",
        "4250 A peak output",
        "Revives large gas/diesel engines",
        "Solid construction",
        "4,250 A peak cranking power"
      ],
      "cons": [
        "Bulkier",
        "More expensive",
        "Negligible power advantage"
      ],
      "citations": 26,
      "distinctOutlets": 21,
      "thinlySourced": false,
      "flaggedToAvoid": {
        "runs": 1,
        "ofRuns": 5
      },
      "image": "https://stierproducts.com/images/products/noco-boost-x-gbx155.webp"
    },
    {
      "rank": 5,
      "tier": "B",
      "lp": 574,
      "name": "AstroAI S8",
      "brand": "AstroAI",
      "slug": "astroai-s8",
      "url": "https://stierproducts.com/products/astroai-s8",
      "verdict": "Mentioned in community conversations, suggesting it is a viable alternative.",
      "pros": [
        "Included in user discussions",
        "4000 A peak output",
        "Integrated USB ports",
        "Reliable safety clamps",
        "Durability tested"
      ],
      "citations": 29,
      "distinctOutlets": 24,
      "thinlySourced": false,
      "image": "https://stierproducts.com/images/products/astroai-s8.webp"
    },
    {
      "rank": 6,
      "tier": "B",
      "lp": 527,
      "name": "NOCO GB40",
      "brand": "NOCO",
      "slug": "noco-gb40",
      "url": "https://stierproducts.com/products/noco-gb40",
      "verdict": "Widely recommended by users, indicating broad satisfaction and reliability.",
      "pros": [
        "Popular among users for dependable performance",
        "Versatile for many vehicles",
        "UltraSafe clamps",
        "Fast recharge",
        "1,200 A peak cranking power"
      ],
      "citations": 30,
      "distinctOutlets": 29,
      "thinlySourced": false,
      "image": "https://stierproducts.com/images/products/noco-gb40.webp"
    },
    {
      "rank": 7,
      "tier": "B",
      "lp": 522,
      "name": "Clore Automotive JNC770R",
      "brand": "Clore Automotive",
      "slug": "clore-automotive-jnc770r",
      "url": "https://stierproducts.com/products/clore-automotive-jnc770r",
      "verdict": "Not mentioned positively or negatively, suggesting it may not be a priority for users.",
      "pros": [
        "4000 A peak output",
        "Rugged chassis",
        "Reliable clamps",
        "Long-term reliability",
        "heavy-duty build"
      ],
      "cons": [
        "Lacks specific endorsements or complaints",
        "Bulky"
      ],
      "citations": 3,
      "distinctOutlets": 3,
      "thinlySourced": false,
      "flaggedToAvoid": {
        "runs": 1,
        "ofRuns": 7
      },
      "image": "https://stierproducts.com/images/products/clore-automotive-jnc770r.webp"
    },
    {
      "rank": 8,
      "tier": "C",
      "lp": 414,
      "name": "NOCO Boost X GBX55",
      "brand": "NOCO",
      "slug": "noco-boost-x-gbx55",
      "url": "https://stierproducts.com/products/noco-boost-x-gbx55",
      "verdict": "Balanced power and size - 4000 A peak, compact form factor; solid build quality and good warranty support.",
      "pros": [
        "4000 A peak output",
        "Compact form factor",
        "Solid build quality",
        "Good warranty",
        "1750 A UltraSafe 2.0 output"
      ],
      "cons": [
        "Insufficient power for large vehicles",
        "Firmware stability problems"
      ],
      "citations": 9,
      "distinctOutlets": 8,
      "thinlySourced": false,
      "flaggedToAvoid": {
        "runs": 1,
        "ofRuns": 4
      },
      "image": "https://stierproducts.com/images/products/noco-boost-x-gbx55.webp"
    },
    {
      "rank": 9,
      "tier": "C",
      "lp": 395,
      "name": "Clore Automotive JNC325",
      "brand": "Clore Automotive",
      "slug": "clore-automotive-jnc325",
      "url": "https://stierproducts.com/products/clore-automotive-jnc325",
      "verdict": "Not referenced in current feedback, implying it may not be a top choice.",
      "pros": [
        "Budget friendly",
        "UltraSafe clamps",
        "Fast recharge",
        "3,200 A peak cranking power",
        "Compact and lightweight"
      ],
      "cons": [
        "Lacks specific endorsements or complaints",
        "Lower output than newer models",
        "No unique features to justify its cost"
      ],
      "citations": 8,
      "distinctOutlets": 7,
      "thinlySourced": false,
      "flaggedToAvoid": {
        "runs": 2,
        "ofRuns": 4
      },
      "image": "https://stierproducts.com/images/products/clore-automotive-jnc325.webp"
    },
    {
      "rank": 10,
      "tier": "D",
      "lp": 350,
      "name": "Gooloo GT4000S",
      "brand": "Gooloo",
      "slug": "gooloo-gt4000s",
      "url": "https://stierproducts.com/products/gooloo-gt4000s",
      "verdict": "Mentioned alongside other options, indicating reasonable performance and suitability for various needs.",
      "pros": [
        "Recognized as a viable choice",
        "4000 A peak output",
        "Robust build",
        "Excellent safety features",
        "Outperforms rivals in drop-test"
      ],
      "cons": [
        "Lower power than newer models",
        "Less reliable firmware"
      ],
      "citations": 16,
      "distinctOutlets": 14,
      "thinlySourced": false,
      "flaggedToAvoid": {
        "runs": 1,
        "ofRuns": 5
      },
      "image": "https://stierproducts.com/images/products/gooloo-gt4000s.webp"
    },
    {
      "rank": 11,
      "tier": "D",
      "lp": 344,
      "name": "NOCO GB50",
      "brand": "NOCO",
      "slug": "noco-gb50",
      "url": "https://stierproducts.com/products/noco-gb50",
      "verdict": "Compact yet powerful - 1000 A peak, lightweight design, proven durability; great for everyday use and emergency kits.",
      "pros": [
        "1000 A peak output",
        "Lightweight design",
        "Proven durability",
        "Great for everyday use",
        "500 Wh battery"
      ],
      "cons": [
        "Only 800 A continuous",
        "2-hour recharge",
        "Less advanced safety features compared to higher-tier models"
      ],
      "citations": 9,
      "distinctOutlets": 9,
      "thinlySourced": false,
      "flaggedToAvoid": {
        "runs": 1,
        "ofRuns": 5
      },
      "image": "https://stierproducts.com/images/products/noco-gb50.webp"
    },
    {
      "rank": 12,
      "tier": "D",
      "lp": 308,
      "name": "Gooloo A3",
      "brand": "Gooloo",
      "slug": "gooloo-a3",
      "url": "https://stierproducts.com/products/gooloo-a3",
      "verdict": "Thin build, low peak amps lead to early failures.",
      "pros": [
        "400 Wh battery",
        "lightweight design",
        "compact size",
        "1,200 A peak cranking power",
        "Ultra-compact design"
      ],
      "cons": [
        "Frequent clamp failures",
        "Low peak amps",
        "Battery only 1 Ah",
        "No USB-C"
      ],
      "citations": 33,
      "distinctOutlets": 32,
      "thinlySourced": false,
      "flaggedToAvoid": {
        "runs": 2,
        "ofRuns": 6
      },
      "image": "https://stierproducts.com/images/products/gooloo-a3.webp"
    },
    {
      "rank": 13,
      "tier": "D",
      "lp": 288,
      "name": "Battery Tender 2000 AMP",
      "brand": "Battery Tender",
      "slug": "battery-tender-2000-amp",
      "url": "https://stierproducts.com/products/battery-tender-2000-amp",
      "verdict": "No recent positive feedback to support its use as a reliable jump starter.",
      "pros": [
        "Reliable performance under harsh weather",
        "2000 A peak suitable for many vehicles",
        "120 Wh battery provides multiple starts",
        "Strong starting capability for larger engines",
        "High power output"
      ],
      "cons": [
        "No recent positive feedback",
        "Not a jump starter",
        "Heavier",
        "More expensive"
      ],
      "citations": 1,
      "distinctOutlets": 1,
      "thinlySourced": true,
      "flaggedToAvoid": {
        "runs": 2,
        "ofRuns": 4
      },
      "image": "https://stierproducts.com/images/products/battery-tender-2000-amp.webp"
    },
    {
      "rank": 14,
      "tier": "D",
      "lp": 260,
      "name": "NOCO Boost X GBX45",
      "brand": "NOCO",
      "slug": "noco-boost-x-gbx45",
      "url": "https://stierproducts.com/products/noco-boost-x-gbx45",
      "verdict": "Premium-grade build quality, flawless performance - 4000 A peak with a smaller footprint; excellent value for the power it delivers.",
      "pros": [
        "4000 A peak output",
        "Smaller footprint",
        "Premium build quality",
        "Excellent value",
        "balanced size and power"
      ],
      "cons": [
        "Higher price than similar performance units",
        "No distinguishing features",
        "Outperformed by cheaper models with better safety"
      ],
      "citations": 27,
      "distinctOutlets": 21,
      "thinlySourced": false,
      "flaggedToAvoid": {
        "runs": 1,
        "ofRuns": 4
      },
      "image": "https://stierproducts.com/images/products/noco-boost-x-gbx45.webp"
    },
    {
      "rank": 15,
      "tier": "D",
      "lp": 248,
      "name": "ANCEL BS300",
      "brand": "ANCEL",
      "slug": "ancel-bs300",
      "url": "https://stierproducts.com/products/ancel-bs300",
      "verdict": "No evidence of user endorsement or criticism, indicating it may not be a top choice.",
      "pros": [
        "Very affordable entry point",
        "Compact size fits in most trunks",
        "Built-in safety protections",
        "1000 A peak output",
        "Suitable for SUVs and pickups"
      ],
      "cons": [
        "Lacks specific endorsements or discussion",
        "Erratic charging curves",
        "Poor safety",
        "Less portable than top picks"
      ],
      "citations": 7,
      "distinctOutlets": 7,
      "thinlySourced": false,
      "flaggedToAvoid": {
        "runs": 2,
        "ofRuns": 4
      },
      "image": "https://stierproducts.com/images/products/ancel-bs300.webp"
    },
    {
      "rank": 16,
      "tier": "F",
      "lp": 131,
      "name": "NOCO Genius1",
      "brand": "NOCO",
      "slug": "noco-genius1-jump-starters",
      "url": "https://stierproducts.com/products/noco-genius1-jump-starters",
      "verdict": "Appears in conversations about jump starters and battery maintenance, indicating basic functionality.",
      "pros": [
        "Basic jump-starter functionality",
        "1000 A peak output",
        "built-in charger",
        "compact design",
        "Compact size"
      ],
      "cons": [
        "500 A peak output",
        "Fails after a year",
        "Not adequate for most vehicles",
        "Lower peak current",
        "Fewer advanced safety features"
      ],
      "citations": 9,
      "distinctOutlets": 9,
      "thinlySourced": false,
      "flaggedToAvoid": {
        "runs": 3,
        "ofRuns": 7
      },
      "image": "https://stierproducts.com/images/products/noco-genius1-jump-starters.webp"
    }
  ]
}