# Which compact jump starter has the fastest charging speed? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

Which compact jump starter has the fastest charging speed?

## Products

### HULKMAN Alpha 85S
```yaml
product: hulkman-alpha-85s
brand: HULKMAN
price_gbp: 226.51
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
weight: 2.57 lbs
dimensions: 9.64*4.05*1.81 in
peak_current: 2,000 Amps(Peak)
charging_time: 1.5 hours
battery_capacity: 20,000mAh
included_accessories: Alpha 85S Jump Starter; Booster Clamps; USB-C Cable; DC 12V Cigarette Lighter Adapter; Warranty Card
```

- **Price:** £226.51 [^1]
- **Summary:** The HULKMAN Alpha 85S is a compact jump starter with a 2000A peak current and a 20,000mAh battery, designed to start 12V vehicles up to 8.5L gas or 6.0L diesel. It supports 65W speed charging and has pre-heat technology for improved performance in cold conditions. It's well-suited for drivers who want a small emergency booster that also functions as a power bank.
- **Ideal For:** For the fastest charging speed, choose the Alpha 85S because it has a 65W speed charger that fully charges in 1.5 hours.
- **Additional Sources:** [^1]

### JFEGWO F40-6000A Car Jump Starter Battery Charger 2025 Upgrade
```yaml
product: jfegwo-f40-6000a-car-jump-starter-battery-charger-2025-upgrade
brand: JFEGWO
price_gbp: 90.6
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
weight: 0.8 KG
dimensions: 52*37.5*30.5cm/ 20.47*14.76*12.01in
peak_current: 6000 Amps
battery_capacity: 28000 mAh
included_accessories: Bubble wrap, a USB charging cable, smart light cable
```

- **Price:** £90.6 [^2]
- **Summary:** A compact 12V jump starter/power bank with a 28000 mAh battery and up to 6000 Amps peak output, aimed at jump-starting vehicles with up to 13L gas or 13L diesel engines. It also includes a 400 Lumens LED light and supports charging via its USB outputs.
- **Ideal For:** For fastest charging, this compact model is rated for 6000 Amps peak output and is specified with USB-C input/output at 5V/2A, making it designed for quick emergency power rather than slow charging.
- **Additional Sources:** [^2]

### JFEGWO JFEGWO F40-10200A pro Car Fast-charging Jump Starter 12V 24000mAh Power Bank Battery Booster 10200
```yaml
product: jfegwo-jfegwo-f40-10200a-pro-car-fast-charging-jump-starter-12v-24000mah-power-bank-battery-booster-10200
brand: JFEGWO
price_gbp: 151.01
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
weight: 0.9 kg
dimensions: 22.8 × 10.4 × 4.6 cm
peak_current: 5000A
battery_capacity: 24000 mAh
included_accessories: 1. USB-A to USB-C cable 1 meter / 39.37 inches 3A charging cable; 2. USB-C to USB-C cable 1 meter / 39.37 inches 5A charging cable; 3. EVA tool case; 4. DC cigarette lighter socket adapter; 5. 8AWG clamp cable; 6. User manual
```

- **Price:** £151.01 [^3]
- **Summary:** JFEGWO F40-10200A pro is a 12V car jump starter that's also a power bank, with a 24000 mAh battery and a peak output current listed as 5000A. It supports fast charging via USB-C with up to 100W on USB-C1 and offers multiple output ports for charging devices. It includes safety protections and a tool case for storage.
- **Ideal For:** If you want the fastest charging speed, this model supports USB-C1 fast charging at 100W, which is higher than lower-rated jump starters that list only smaller USB outputs.
- **Additional Sources:** [^3]

---
## References & Sources
[^1]: hulkman.com, accessed 2026-06-24. https://www.hulkman.com/products/alpha85s
[^2]: JFEGWO Official Store, accessed 2026-06-24. https://www.jfegwo.com/products/jfegwo-6000a-car-jump-starter-battery-charger-2025-upgrade
[^3]: jfegwo.com, accessed 2026-06-24. https://www.jfegwo.com/products/car-fast-jump-starter-12v-24000mah-power-bank-battery-booster-car-starter-multifunction-portable-lithium-auto-super-capacitor