ODM Portable Car Jumper Products & In Stock

Supercapacitor (ultracapacitor) jump starters rely on electrostatic double-layer capacitance rather than electrochemical reactions. They do not store energy for months at a time like lithium packs. Instead, when connected to a "dead" vehicle battery that still holds a residual charge (even as low as 5V–8V), high-efficiency DC-DC boost converters draw that remaining energy and fully charge the capacitors in approximately 2 to 3 minutes. Once the capacitor bank reaches full voltage, it releases its entire stored energy as a massive burst of cranking current (up to 3000A peak) to start the engine. Alternatively, units can be primed in minutes via a 12V cigarette lighter, a 5V USB wall port, or a USB-C PD fast charger.

Lithium jump starters act as portable power banks with high energy density, allowing them to power mobile devices for hours and hold a charge for multiple jump starts over months. However, lithium cells degrade over time, self-discharge, pose fire risks under thermal runaway, and lose efficiency in freezing weather. In contrast, supercapacitors offer extreme power density with lower total energy storage. They cannot serve as multi-hour power banks, but they offer over 100,000 cycles (compared to 300–500 cycles for lithium), require zero maintenance charging during storage, operate safely from -40°C to +70°C, and will not swell or degrade over decades of storage.

For existing, in-stock products with private-label branding (laser logo, customized silk-screen, and custom packaging), production typically takes 15 to 20 working days after artwork sign-off. For bespoke ODM projects requiring structural mold design, custom PCBA layout, firmware engineering, and regulatory filings (UL/CE), initial functional prototypes take 30 to 45 days, with mass production tooling completing within 60 to 75 days.

Yes. Our heavy-duty line—including the SPKSTAR 12/24V 3000A dual-voltage supercapacitor unit—is specifically engineered for commercial use. It automatically senses system voltage (12V or 24V) or permits manual override to start large diesel engines up to 13 liters displacement, including Class 8 haulers, excavators, tractors, marine vessels, and municipal utility vehicles.

Our patented smart clamp assemblies (incorporating EC5 and heavy-duty EC8 connectors) feature integrated microcontrollers with multi-point protection: reverse polarity protection with audible and visual alerts, short-circuit cut-off, over-current cutoff, back-charge isolation (preventing vehicle alternator current from surging into the booster post-start), low-voltage alarm, over-temperature thermal sensors, and timed auto-power-off safeguards.

We provide comprehensive compliance dossiers tailored to the destination market, including CE (EMC & LVD), FCC Declaration of Conformity, RoHS Directive 2011/65/EU reports, UKCA for Great Britain, and UL 2743 compliance files. For models containing auxiliary lithium cells, we provide UN38.3 test summaries, 1.2m drop test documentation, and full MSDS reports for sea and air freight clearance. Battery-free supercapacitor models benefit from relaxed hazardous materials classifications for air freight.