autowit SuperCap 2 Super Capacitor Jump Starter — 12V Batteryless Portable, 800A Peak, Rapid Charge

The Autowit SuperCap 2 is a batteryless 12V portable jump starter that uses supercapacitors to deliver up to 800A peak current for fast, safe engine starts without regular charging.

When a vehicle battery dies, traditional portable jump starters with internal batteries can be bulky, require frequent charging, and carry risks if mishandled. The Autowit SuperCap 2 replaces the internal battery with advanced supercapacitor technology, creating a compact, lightweight unit engineered for repeated, reliable use in extreme temperatures and harsh conditions. It charges quickly from weak batteries and delivers high current on demand, making it a practical emergency tool for drivers, mechanics, and outdoor enthusiasts.

How quickly can the SuperCap 2 deliver a jump when my car battery is dead?

The SuperCap 2 charges its supercapacitors in just minutes from a weak battery connection and provides immediate starting power, often able to crank most engines in one or two attempts. Its 800A peak current is sufficient to start many gasoline engines up to 8.0L and diesel engines up to 4.0L.

• Peak current: up to 800A for strong cranking power
• Compatible with gasoline engines up to 8.0L
• Compatible with diesel engines up to 4.0L
• Charges quickly in minutes from a weak battery

Is the SuperCap 2 safe to use around vehicles and people?

Safety features are built into the design to reduce the risk associated with traditional jump leads and battery packs. The unit prevents sparks, resists polarity mistakes, and offers protection against overcurrent, overload, and overvoltage for safer handling during roadside jumps.

• Reverse polarity protection prevents incorrect hook-ups
• Overcurrent and overload protection reduces device and vehicle risk
• Design minimizes spark and explosion hazards
• Physical safeguards and intelligent electronics for reliable operation

Will the SuperCap 2 work in extreme cold or heat?

Yes. Supercapacitors are tolerant across a wide temperature range, allowing the SuperCap 2 to function in very cold winters and hot summers. The unit supports multiple charging approaches so you can recharge it quickly whether you’re in a blizzard or a hot garage.

• Operating range: from -40°C to 70°C
• Four charging methods for flexibility in the field
• Fast recharge—only minutes to readiness in most conditions
• Built to perform outdoors and in vehicle storage areas

How durable and portable is the SuperCap 2 for everyday carry?

Designed for convenience, the SuperCap 2 is compact and lightweight compared with battery-based jump starters. Its long life expectancy and rugged construction make it ideal to keep in a glove box, trunk, or toolkit for frequent or emergency use.

• Size: 4.52 x 1.77 x 1.77 inches—easy to stow in vehicles
• Weight: approximately 2 pounds for simple portability
• Long lifecycle: rated for more than 100,000 uses under normal operation
• Suitable for cars, motorcycles, RVs, pickups, tractors, snowmobiles

Who is this for? The Autowit SuperCap 2 is aimed at drivers who want a compact, low-maintenance emergency starter that avoids the upkeep and risks of battery-based units. It’s well-suited for commuters, rural drivers, farm and equipment operators, outdoor adventurers, and anyone who needs a rugged, repeatable jump solution that works in extreme weather and doesn’t require routine home charging. If you prefer a lightweight, fast-charging, and highly durable jump starter for frequent or emergency use, the SuperCap 2 offers a practical alternative to conventional battery jump packs.