| Model Number | J400 | J401 | J401X | J402 | J402 PRO |
| Peak Amps | 2000A | 2500 A | 2500 A | 3000 A | 3500 A |
| Battery Capacity | 23.68Wh | 74Wh | 74Wh | 88.8Wh | 88.8Wh |
| Operating Temp | -4℉ to 122℉ | -4℉ to 122℉ | -40℉ to 122℉ | -4℉ to 122℉ | -4℉ to 122℉ |
| Light Output | 300 LUMENS | 300 LUMENS | 300 LUMENS | 300 LUMENS | 300 LUMENS |
| Fast Charging | QC3.0 15W(Max) | PD 100W Two-Way | PD 100W Two-Way | PD 100W Two-Way | PD 100W Two-Way |
| Item Dimensions | 6.89×3.39×1.69 in | 9.45×4.19×2.36in | 9.45×4.19×2.36 in | 9.45×4.19×2.36in | 9.45×4.19×2.36in |
| Engine Rating | 8L Gas/6L Diesel | 8.5L Gas/6.5L Diesel | 8.5L Gas/6.5L Diesel | 9L Gas/7L Diesel | 9.5L Gas/7.5L Diesel |
●Versatile Compatibility
This car jump box is designed for a wide range of vehicles, including:
Cars, motorcycles, boats, and RVs
ATVs, SUVs, vans, and tractors
Mowers and many more
A truly adaptable solution for various needs.
●Two-Way Fast Charging
More than just a jump starter, this device can quickly charge:
Smartphones, tablets, and laptops
Wearable devices and other electronics
A reliable power source wherever you go.
●Durable & Weather-Resistant
Built to endure harsh conditions with:
IP65 water resistance – protects against rain and dust
94V0 flame retardant rating – enhances safety
Rugged enclosure – withstands drops and impacts
Designed for long-lasting performance.
●Built-in LED Flashlight with 3 Modes
Equipped with a powerful LED light featuring:
Steady mode – for general lighting
Flashing mode – for visibility
SOS mode – for emergencies
Stay prepared in any situation.
Grepow offers a comprehensive OEM/ODM service for vehicle emergency jump starters, integrating advanced technology and modular design to enhance performance and customization.
●Unparalleled Customization Freedom
▸Supports dual-platform development for Li-Polymer and Lithium-Iron Phosphate, with flexible peak current configurations from 1000A to 10000A.
▸Options for exterior ID design, intelligent digital display, USB‑C fast charging module, and low‑temperature start technology available on demand.
▸Globally certified with CE, FCC, ROHS, UN38.3, and more—empowering your seamless entry into premium European and American markets.
●Customizable Multi-Function Design
Beyond jump-starting, our solutions integrate lighting, SOS warning, PD 100W fast charging, digital tire pressure monitoring, and a smart air pump (0-150 PSI). Optional water pump modules and wireless charging expand functionality for various applications.
●Outdoor enthusiasts, fleet managers, and everyday drivers seeking a reliable emergency toolkit.
●Brands looking to launch co-branded or white-label jump starters with unique specifications.
