# What is the fastest charging lithium jump starter on the market? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

What is the fastest charging lithium jump starter on the market?

## Products

### GOOLOO GP2000 2000A Peak Portable Car Jump Starter
```yaml
product: gooloo-gp2000-2000a-peak-portable-car-jump-starter
brand: GOOLOO
price_gbp: 44.84
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
ports: 2
weight: 1.2 lbs / 0.55 kg
capacity: 12
peak_current: 2000
voltage_output: 12
includes_cables: Smart jumper cable, USB to Type-C cable, Type-C to Type-C cable
reversible_polarity_protection: Yes (reverse-polarity protection)
```

- **Price:** £44.84 [^1]
- **Summary:** Compact 12V jump starter with 2000A peak current and a 12,000 mAh (44.4 Wh) battery that can start gasoline engines up to 8.0L and diesel up to 6.0L. Lightweight (about 1.2 lbs) with dual USB outputs, a 400-lumen LED flashlight, and multiple safety protections, suitable as an emergency power bank and booster for small-to-mid-size vehicles.
- **Ideal For:** Suited for fastest-charging comparison because it has a 15W USB-C input/output port enabling relatively quicker recharge among compact lithium jump starters (15W input).

### RYOBI ONE+ 18V 1600A Jump Starter (PCLJSP1600)
```yaml
product: ryobi-one-18v-1600a-jump-starter-pcljsp1600
brand: RYOBI
price_gbp: 126.84
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
voltage_output: 18
includes_cables: true
reversible_polarity_protection: true
```

- **Price:** £126.84 [^2]
- **Summary:** Portable 18V ONE+ jump starter providing 1600 peak amps and anti-spark/reverse-polarity protection; uses removable RYOBI 18V ONE+ batteries and includes LED work light. Suits users who already own RYOBI ONE+ batteries or want a battery-swappable jump starter for engines up to 6.0L V8.
- **Ideal For:** Suitable for the fastest-charging lithium jump starter question because it uses standard 18V ONE+ removable batteries (enabling faster recharge by swapping charged batteries) and delivers 1600 peak amps with anti-spark and reverse-polarity protection.

### Schumacher Electric Lithium 800A 12V Portable Jump Starter (SE-LI800)
```yaml
product: schumacher-electric-lithium-800a-12v-portable-jump-starter-se-li800
brand: Schumacher
price_gbp: 94.19
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
ports: 1
weight: 8.9
peak_current: 800
charging_time: 72
voltage_output: 12
includes_cables: true
reversible_polarity_protection: true
```

- **Price:** £94.19 [^3]
- **Summary:** Compact 800-peak-amp 12V lithium jump starter with a built-in LED work light, 12V DC output and a single USB port for device charging. Designed for jump-starting up to 6.0L gas or 3.0L diesel engines, it includes heavy-duty booster cables and reverse-polarity alarm protection. Lightweight and portable for garage or roadside emergency use.
- **Ideal For:** Not the fastest charging model - its 72-hour recharge time and 800A peak output suit users who need reliable emergency starts rather than fastest recharge performance.

### NOCO GB70 Boost HD 2000A UltraSafe Lithium Jump Starter
```yaml
product: noco-gb70-boost-hd-2000a-ultrasafe-lithium-jump-starter
brand: NOCO
price_gbp: 161.06
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
ports: 1
weight: 5.0 lbs
peak_current: 2000
charging_time: 2.0
voltage_output: 12
includes_cables: HD battery clamps, USB charging cable, XGC male plug, XGC female plug, XGC cable
reversible_polarity_protection: true
```

- **Price:** £161.06 [^4]
- **Summary:** Compact 2000A 12V lithium jump starter providing up to 40 jump starts per charge, a 400-lumen flashlight, USB device charging, and IP65 water/dust resistance; weighs 5.0 lbs and suits cars, trucks, boats and RVs. Features rapid 12V fast-charge (0-100% in ~2 hours) and built-in spark-proof reverse-polarity protection for safe, mistake-proof use.
- **Ideal For:** Ideal for fastest-charging lithium jump starters because it supports 12V fast charging to reach jump-ready status in 15 minutes and a full charge in ~2 hours.

### CARKU JS558 3250A 12V Jump Starter with Air Compressor
```yaml
product: carku-js558-3250a-12v-jump-starter-with-air-compressor
brand: CARKU
price_gbp: 149.52
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
ports: 2
weight: 1.7 kg
peak_current: 3250
voltage_output: 12
includes_cables: true
reversible_polarity_protection: true
```

- **Price:** £149.52 [^5]
- **Summary:** Combination 12V lithium jump starter and built-in air compressor offering 3250A peak current, 160 PSI inflator, USB PD fast charging and compact 1.7 kg weight; suited for roadside emergencies and inflating tires. Good for users who want a portable all-in-one emergency tool for cars, SUVs and light diesel engines.
- **Ideal For:** Suited for the fastest-charging jump starter question because it offers USB PD 30W fast-charge support and a compact lithium design enabling quicker recharge cycles compared with larger lead-acid units.

### DEWALT DXAEJ14 2500A Portable Lithium Jump Starter
```yaml
product: dewalt-dxaej14-2500a-portable-lithium-jump-starter
brand: DEWALT
price_gbp: 156.25
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
ports: 2
weight: 17.3 lbs
capacity: 19
peak_current: 1600
charging_time: 3
voltage_output: 12
includes_cables: true
reversible_polarity_protection: true
```

- **Price:** £156.25 [^6]
- **Summary:** The DEWALT DXAEJ14 is a portable 12V jump starter with 1600 peak amps, a built-in 120 PSI digital air compressor, and dual USB ports (25W USB-C and 15W USB-A). It includes clamps and cables, an alternator check, and reverse polarity protection, making it a rugged multipurpose unit for garages and roadside use. Its SLA-type battery delivers strong sustained cranking power suited for larger engines.
- **Ideal For:** Suited for the fastest-charging comparison because it has a 3-hour recharge time (180 minutes) and onboard USB power delivery for quick device charging.

---
## References & Sources
[^1]: Lowe's, accessed 2026-06-12. https://www.lowes.com/pd/GOOLOO-New-GP2000-Jump-Starter-12V-2000A-Car-Jumper-Starter-Up-to-8-0L-Gas-6-0L-Diesel-Engines-SuperSafe-Portable-Battery-Charger-Auto-Lithium-Box-Booster-Pack-with-USB-Quick-Charge-red/9072594
[^2]: Home Depot (kit), accessed 2026-06-12. https://www.homedepot.com/p/reviews/RYOBI-ONE-18V-Cordless-1600A-Jump-Starter-with-LED-Work-Light-Kit-with-2-0-Ah-Battery-and-Charger-P7110/324885787/5
[^3]: Tractor Supply, accessed 2026-06-12. https://www.tractorsupply.com/tsc/product/schumacher-800-peak-amp-portable-power-jump-starter-sj1342
[^4]: BestBuyAutoEquipment, accessed 2026-06-12. https://www.bestbuyautoequipment.com/battery-chargers-starters-testers-power-banks/noco-gb70-genius-boost-hd-2000a-12v-lithium-jump-starter/
[^5]: Carku official store, accessed 2026-06-12. https://www.car-ku.com/product/JS558-12V-Jump-Starter-with-Air-Compressor.html
[^6]: Western Ranch Supply (alternate listing), accessed 2026-06-12. https://www.westernranchsupply.com/product/dxaej14-jump-starter-with-digital-compressor/