# What is the most powerful lithium jump starter available? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

What is the most powerful lithium jump starter available?

## Products

### GOOLOO GP4000 4000A Jump Starter
```yaml
product: gooloo-gp4000-4000a-jump-starter
brand: GOOLOO
price_gbp: 59.02
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
ports: 3
weight: 1.81 lbs / 0.82 kg
capacity: 24
peak_current: 4000
charging_time: 5
voltage_output: 12
includes_cables: Smart jumper cables and USB-C cable
reversible_polarity_protection: true
```

- **Price:** £59.02 [^1]
- **Summary:** The GOOLOO GP4000 is a 4000A, 12V lithium jump starter designed to start gasoline engines and diesel engines up to 10.0L. It includes dual USB-A ports, a USB-C port, an LED emergency light, smart metal clamps, and protection features for vehicle owners, truck drivers, commuters, and outdoor users.
- **Ideal For:** It suits the search for the most powerful lithium jump starter because its 4000A peak output can start engines up to 10.0L diesel and it provides 60+ jump starts per charge.

### NOCO BOOST MAX GB250+
```yaml
product: noco-boost-max-gb250
brand: NOCO
price_gbp: 811.65
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
ports: 2
weight: 14.7 lbs/6.67 kg
peak_current: 5250
charging_time: 8.5
voltage_output: 12
includes_cables: true
reversible_polarity_protection: true
```

- **Price:** £811.65 [^2]
- **Summary:** The NOCO BOOST MAX GB250+ is a 5250-amp 12V lithium jump starter designed for gasoline and diesel engines up to 16 liters, including heavy-duty commercial vehicles. It includes dual USB ports, a 600-lumen flashlight, an integrated voltmeter, spark-proof technology, reverse polarity protection, charging accessories, and a carrying case.
- **Ideal For:** It suits the search for the most powerful lithium jump starter because its 5250-amp peak output can start engines up to 16 liters while remaining portable at 14.7 lbs and adding reverse polarity protection and dual USB ports.
- **Additional Sources:** [^3], [^4]

### NOCO GB500+ Boost MAX 6250A 12/24V UltraSafe Lithium Jump Starter
```yaml
product: noco-gb500-boost-max-6250a-12-24v-ultrasafe-lithium-jump-starter
brand: NOCO
price_gbp: 1475.7
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
ports: 2
weight: 14.7/6.67
peak_current: 6250
charging_time: 8.5
voltage_output: 12.8
includes_cables: true
reversible_polarity_protection: true
```

- **Price:** £1475.7 [^5]
- **Summary:** The NOCO GB500+ is a professional lithium jump starter delivering 6250 peak amps for 12V and 24V lead-acid systems, including gasoline and diesel engines up to 45L. It includes heavy-duty connectors, charging cables, a power adapter, and a carrying case, making it suited to commercial vehicles, trucks, buses, agricultural equipment, and emergency roadside use.
- **Ideal For:** This specifically suits someone seeking the most powerful lithium jump starter because it delivers 6250 peak amps, supports both 12V and 24V systems, and can start gasoline or diesel engines up to 45L.
- **Additional Sources:** [^6], [^7]

### NOCO BOOST MAX GB500
```yaml
product: noco-boost-max-gb500
brand: NOCO
price_gbp: 1475.7
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
ports: 2
weight: 24 lb / 10.9 kg
peak_current: 6250
charging_time: 8.5
voltage_output: 12 / 24
includes_cables: true
reversible_polarity_protection: true
```

- **Price:** £1475.7 [^5]
- **Summary:** The NOCO BOOST MAX GB500 is a high-output lithium jump starter delivering 6250 peak amps for 12V and 24V lead-acid battery systems. It includes dual USB ports, heavy-duty cables, a 2200-lumen work light, reverse polarity protection, and supports engines up to 45 liters, making it suitable for large commercial, industrial, agricultural, and emergency vehicles.
- **Ideal For:** It specifically suits the search for the most powerful lithium jump starter because it delivers 6250 peak amps, supports both 12V and 24V systems, and can start gasoline or diesel engines up to 45 liters.
- **Additional Sources:** [^8], [^9]

### NOCO GB250 Boost MAX 5250A 12V Jump Starter
```yaml
product: noco-gb250-boost-max-5250a-12v-jump-starter
brand: NOCO
price_gbp: 885.4
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
ports: 2
weight: 14.7 lbs / 6.67 kg
peak_current: 5250
charging_time: 8.5
voltage_output: 12
includes_cables: true
reversible_polarity_protection: true
```

- **Price:** £885.4 [^10]
- **Summary:** The NOCO GB250 is a high-power 12V lithium jump starter delivering 5250A for gasoline and diesel engines up to 16L. It includes dual USB ports, a 12V power output, reverse polarity protection, a 600-lumen flashlight, heavy-duty cables, and a carrying case, making it suitable for commercial vehicles, fleets, heavy equipment, and emergency roadside use.
- **Ideal For:** This specifically suits the search for the most powerful lithium jump starter because its 5250A peak output can start gasoline and diesel engines up to 16L, including Class 8 semi-trucks and heavy equipment.
- **Additional Sources:** [^11], [^12]

### WOLFBOX MegaVolt24 4000A
```yaml
product: wolfbox-megavolt24-4000a
brand: WOLFBOX
price_gbp: 73.78
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
ports: 2
capacity: 24 Ah
peak_current: 4000
charging_time: 1.3
voltage_output: 12
includes_cables: true
reversible_polarity_protection: true
```

- **Price:** £73.78 [^13]
- **Summary:** The WOLFBOX MegaVolt24 4000A is a portable 12V jump starter with a 24000mAh (24 Ah) battery and a claimed 4000A peak output, a 65W USB-C input/output and a QC3.0 USB-A port. It includes smart jumper clamps with multiple safety protections, an LED display, and fast charging that recharges the unit in about 1.3 hours, making it suitable for cars, trucks, boats and larger 12V engines. It ships with charging and jumper cables and offers reverse-polarity protection.
- **Ideal For:** Ideal for the question because it pairs a high 24000mAh (24 Ah) capacity with a claimed 4000A peak current and a 65W USB-C port, making it one of the most powerful portable lithium jump starters available.
- **Additional Sources:** [^14]

### POD-X POD-XTREME (XTREME series)
```yaml
product: pod-x-pod-xtreme-xtreme-series
brand: POD-X
price_gbp: 95.92
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
voltage_output: 12
includes_cables: true
reversible_polarity_protection: true
```

- **Price:** £95.92 [^15]
- **Summary:** The POD-XTREME is an industrial-grade 12V lithium jump starter and power pack delivering 1000+ amps for gas and diesel engines, with USB charging, digital battery display, LED flashlight, and rugged silicone/polycarbonate casing. It includes Intelli-Jump smart cables with built-in reverse-polarity protection and fits users needing many jump starts per charge and device charging on the go.
- **Ideal For:** Ideal for users needing the most powerful portable lithium jump starter because it provides 1000+ peak amps and 20+ jumps per full charge with smart reverse-polarity-protected cables.
- **Additional Sources:** [^16], [^17]

### NOCO GB251 Boost MAX 3000A 24V Jump Starter
```yaml
product: noco-gb251-boost-max-3000a-24v-jump-starter
brand: NOCO
price_gbp: 651.4
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
ports: 2
weight: 13.6 lbs / 6.17 kg
peak_current: 3000
charging_time: 8.5
voltage_output: 24
includes_cables: true
reversible_polarity_protection: true
```

- **Price:** £651.4 [^18]
- **Summary:** The NOCO GB251+ is a 24V lithium jump starter delivering 3000A of peak current for gasoline and diesel engines up to 32L. It includes integrated battery clamps, dual USB ports, a 600-lumen flashlight, reverse-polarity protection, and charging accessories, making it suitable for commercial vehicles and heavy equipment.
- **Ideal For:** It suits anyone seeking the most powerful lithium jump starter because it delivers 3000A of peak power for 24V systems and can start engines up to 32L, including class 8 semitrucks and heavy equipment.
- **Additional Sources:** [^19], [^20]

### HULKMAN Alpha 100 4000A Smart Jump Starter
```yaml
product: hulkman-alpha-100-4000a-smart-jump-starter
brand: HULKMAN
price_gbp: 295.14
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
ports: 3
weight: 3.57 lbs / 1.62 kg
capacity: 32 Ah
peak_current: 4000 A
charging_time: 1.5 hours
voltage_output: 12 V
includes_cables: Booster clamps and USB-C cable
reversible_polarity_protection: true
```

- **Price:** £295.14 [^21]
- **Summary:** The HULKMAN Alpha 100 is a high-output lithium jump starter with 4000A peak current, a 32 Ah battery, 65W fast charging, and support for 12V vehicles with gas or diesel engines up to 10L. It includes booster clamps, multiple USB ports, a 12V DC output, a display, and cold-weather preheating, making it suitable for cars, trucks, RVs, and other large vehicles.
- **Ideal For:** This specifically suits someone seeking the most powerful lithium jump starter because it delivers 4000A peak current, supports engines up to 10L, provides 32 Ah of battery capacity, and can deliver a full charge in about 1.5 hours.

### HULKMAN Alpha 85 All-Season Series 2000A Smart Jump Starter
```yaml
product: hulkman-alpha-85-all-season-series-2000a-smart-jump-starter
brand: HULKMAN
price_gbp: 147.57
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
ports: 2
capacity: 20
peak_current: 2000
charging_time: 1.5
voltage_output: 15
includes_cables: true
reversible_polarity_protection: true
```

- **Price:** £147.57 [^22]
- **Summary:** The HULKMAN Alpha 85 is a 20 Ah lithium jump starter delivering 2000A peak current, with capacity to start engines up to 8.5L gas and 6.0L diesel. It includes USB-C, USB-A, and 15V DC outputs, intelligent jumper cables, a smart display, flashlight, and reverse-polarity protection, making it suitable for drivers of cars, SUVs, pickups, and light-duty diesel vehicles.
- **Ideal For:** It suits the search for the most powerful lithium jump starter because its 2000A peak output can start engines up to 8.5L gas and 6.0L diesel, while its 20 Ah battery supports up to 60 jump starts per charge.
- **Additional Sources:** [^23]

---
## References & Sources
[^1]: GOOLOO UK, accessed 2026-09-13. https://gooloo.uk/products/gp4000-jump-starter
[^2]: 2407.pl, accessed 2026-09-13. https://2407.pl/en/noco-brand/starter-noco-boost-max-gb250-plus-12v-5250a-ultrasafe-lithium-usb-power-bank-16l-plus-petrol-diesel-gb250-plus-52333015/
[^3]: Total Battery, accessed 2026-09-13. https://webstore.totalbattery.com/NOCO-GB250-5250A12V-UltraSafe-Lithium-Jump-Starter-p/gb250.htm
[^4]: Go Batteries, accessed 2026-09-13. https://www.gobatteries.co.uk/product/battery-chargers/battery-booster-packs/gb250-noco-genius-boost-max-battery-jump-starter/
[^5]: NOCO, accessed 2026-09-13. https://no.co/gb500
[^6]: BatteryMart, accessed 2026-09-13. https://www.batterymart.com/p-gb500-noco-boost-maxx-lithium-jump-starter.html
[^7]: 2407.pl, accessed 2026-09-13. https://2407.pl/en/noco-brand/starter-noco-boost-max-gb500-plus-12v-24v-6250a-ultrasafe-lithium-usb-power-bank-45l-plus-petrol-diesel-gb500-plus-52333017/
[^8]: GlobalTestSupply, accessed 2026-09-13. https://www.globaltestsupply.com/product/noco-gb500-lithium-jump-starter-box
[^9]: Continental Battery Systems, accessed 2026-09-13. https://www.continentalbattery.com/noco-12v-24v-6250a-jump-start-boost-max
[^10]: Automotive Superstore, accessed 2026-09-13. https://automotivesuperstore.com.au/noco-gb250
[^11]: AutoZone, accessed 2026-09-13. https://www.autozone.com/p/noco-vehicle-jump-starter-gb250/1245670
[^12]: Lithiumion-Batteries.com, accessed 2026-09-13. https://www.lithiumion-batteries.com/products/product/noco-gb250-5250a-12v-boost-max-ultrasafe-jump-starter
[^13]: WOLFBOX (official), accessed 2026-09-13. https://wolfbox.com/products/wolfbox-megavolt24-jump-starter
[^14]: Best Buy, accessed 2026-09-13. https://www.bestbuy.com/product/wolfbox-4000a-car-battery-jump-starter-portable-battery-booster-fast-charger-jump-box-for-10l-gasoline-and-diesel-engines/CZTHRZYVP7
[^15]: The POD X (product quick start / sold out page), accessed 2026-09-13. https://thepodx.com/pages/quick-start-instructions-how-to-use-your-pod-xtreme?srsltid=AfmBOor9omHtBT7jzF7QlPfcYesIX7McxJYJ_rgEyTCF1aawKA_9Kli8
[^16]: The POD X (official store), accessed 2026-09-13. https://thepodx.com/products/pod-xtreem-automotive-jumper-starter-power-pack?srsltid=AfmBOooKKKRDtT5W_EfGUJ-aKwpNmtslmO1RPXEVGsVTpAWbbuc_LX8e
[^17]: Conversions Tech, accessed 2026-09-13. https://conversionstech.com/products/podxtreme-jump-starter-gas-diesel-vehicles-industrial-use-black-w-quick-charge-ports?srsltid=AfmBOoqvCRXpcaGY4y4sHoMQCo7XZvfdGquNP5pojE-Xe50XmFPbdVyc
[^18]: NOCO, accessed 2026-09-13. https://no.co/gb251
[^19]: Tayna Batteries, accessed 2026-09-13. https://www.tayna.co.uk/jump-packs/noco/gb251/
[^20]: ML Performance, accessed 2026-09-13. https://www.mlperformance.co.uk/products/noco-gb251-boost-max-gb251-car-jump-starter-with-load-status-display-max-charging-current-3000a
[^21]: HULKMAN, accessed 2026-09-13. https://www.hulkman.com/pages/the-world-s-1-intelligent-jump-starter
[^22]: HULKMAN Direct, accessed 2026-09-13. https://www.hulkman.com/products/alpha85
[^23]: Perla Store, accessed 2026-09-13. https://perlastore.ca/products/hulkman-alpha85-2000a-jump-starter-74wh-power-pack-with-3-3-inch-display-usb-c-pd-5-mode-flashlight