# Which 12v jump starter has the quickest charging time? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

Which 12v jump starter has the quickest charging time?

## Products

### NOCO Boost Plus GBX45
```yaml
product: noco-boost-plus-gbx45
brand: NOCO
price_gbp: 92.2
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
peak_current: 1250 A
cranking_amps: 1250 A
charging_ports: USB-C input and output, USB-A output
voltage_output: USB-A: 5 V 2.1 A; USB-C: 5 V 3 A, 9 V 3 A, 12 V 3 A, 15 V 3 A, 20 V 3 A
emergency_light: 100 lumens LED flashlight with seven modes, SOS and strobe
size_and_weight: 3.28 in H x 6.83 in W x 2.08 in D; 2.16 lb
joule_starting_power: Up to 6.5 L gas engines and 4.0 L diesel engines
reversed_polarity_protection: true
```

- **Price:** £92.2 [^1]
- **Summary:** The NOCO Boost Plus GBX45 is a compact 12 V lithium jump starter rated at 1250 A for gas engines up to 6.5 L and diesel engines up to 4.0 L. It includes fast USB-C Power Delivery charging, USB device charging, reverse polarity protection and a 100-lumen emergency flashlight, making it suitable for drivers, commuters and roadside emergencies.
- **Ideal For:** It suits the quickest-charging requirement because its 60 W USB-C Power Delivery can fully recharge the GBX45 in 48 minutes and provide enough charge for a jump start in 5 minutes.
- **Additional Sources:** [^2], [^3]

### STRAUTO 83603 Emergency Jump Starter
```yaml
product: strauto-83603-emergency-jump-starter
brand: STRAUTO
price_gbp: 29.51
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
peak_current: 1200A
cranking_amps: 600A
charging_ports: USB-A input; USB-A output; USB-C charging
voltage_output: 12V vehicle battery; 5V/2.4A USB-A
emergency_light: LED flashlight with SOS mode
joule_starting_power: 1200A
reversed_polarity_protection: true
```

- **Price:** £29.51 [^4]
- **Summary:** The STRAUTO 83603 is a compact 12V emergency jump starter with 600A starting current and 1200A peak power. It includes a boost button, USB device charging, an LED flashlight with SOS mode, reverse-polarity protection, jumper cables, a charging cable, and a storage case. It suits drivers who want an affordable emergency backup for cars and other small vehicles.
- **Ideal For:** This product suits users seeking quick charging because it supports charging from a 5V/2A source and includes USB-C charging, while its 600A starting current and 1200A peak power provide strong emergency-starting capability.
- **Additional Sources:** [^5]

### NOCO Boost Plus Air AX65
```yaml
product: noco-boost-plus-air-ax65
brand: NOCO
price_gbp: 221.32
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
peak_current: 2000A
charging_ports: USB-C input and USB-C output
voltage_output: 12V
emergency_light: 100 lumens with emergency modes
size_and_weight: 8.45in x 5.47in x 3.92in; 6.95lb
reversed_polarity_protection: true
```

- **Price:** £221.32 [^6]
- **Summary:** The NOCO AX65 combines a 2000A 12V jump starter with a 100 PSI air compressor, USB-C power bank, and 100-lumen emergency flashlight. It suits drivers, SUVs, trucks, motorcycles, and roadside users who want one compact device for jump-starting, tire inflation, and emergency charging.
- **Ideal For:** It suits users seeking quick charging because its USB-C Power Delivery supports up to 60W and the device can recharge through USB-C at up to 20V and 3A.
- **Additional Sources:** [^7]

### AstroAI S8 Ultra
```yaml
product: astroai-s8-ultra
brand: AstroAI
price_gbp: 103.29
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
peak_current: 4000A
cranking_amps: 800A
charging_ports: USB-A 5V/2.4A; USB-A Quick Charge; USB-C input/output; 15V DC output
voltage_output: 15V/10A DC; 5V/2.4A USB-A; 5V/3A, 9V/2A, 12V/1.5A USB-A Quick Charge; 5V/3A, 9V/2A, 12V/1.5A USB-C
emergency_light: LED flashlight with solid, strobe, and SOS modes
size_and_weight: 5.24 x 10.31 x 4.29 in; 2.13 lb
reversed_polarity_protection: true
```

- **Price:** £103.29 [^8]
- **Summary:** The AstroAI S8 Ultra is a 4000A, 24000mAh jump starter for vehicles with engines up to 10.0L gas or 8.0L diesel. It also works as a power bank, includes USB Quick Charge and USB-C input/output, and has a three-mode LED flashlight, making it suitable for drivers who want powerful roadside emergency equipment.
- **Ideal For:** It suits drivers seeking quick charging because it includes a USB-A Quick Charge port and a two-way USB-C port supporting up to 12V/1.5A output and input.

---
## References & Sources
[^1]: Home Depot, accessed 2026-09-13. https://www.homedepot.com/p/NOCO-Boost-X-12-Volt-1250-Amp-Lithium-Jump-Starter-GBX45/318227864
[^2]: Best Buy, accessed 2026-09-13. https://www.bestbuy.com/product/noco-boost-x-gbx45-1250a-ultrasafe-jump-starter-12v-portable-lithium-battery-booster-pack-6-5l-gas-4-0l-diesel/J7GRLJ8ZCQ
[^3]: Inter Cars 24, accessed 2026-09-13. https://www.intercars24.ee/products/g0ue0k-booster-gbx45-1250a-12v-jump-starter
[^4]: STRAUTO, accessed 2026-09-13. https://strauto.com/products/strauto-emergency-jump-starter-with-air-compressor
[^5]: Jasco, accessed 2026-09-13. https://byjasco.com/products/strauto-emergency-jump-starter-black
[^6]: NOCO, accessed 2026-09-13. https://no.co/ax65
[^7]: Tundra Lifestyle, accessed 2026-09-13. https://www.tundralifestyle.com/products/noco-ax65-2000a-boost-air-jump-starter-and-67lpm-100psi-air-compressor
[^8]: AstroAI, accessed 2026-09-13. https://www.astroai.com/s8-ultra-jump-starter-battery/ap/1000400619