The GYS Startronic Supercap 12/24V is an intelligent autonomous jump starter designed for petrol and diesel vehicles fitted with 12V or 24V lead-acid batteries up to 150Ah. Unlike conventional battery-based boosters, it contains no internal battery — instead, its supercapacitors recharge in as little as two minutes directly from the residual voltage of the vehicle being started, or from the alternator of a running engine, making it ready to use wherever it is needed without any prior charging.

Built for professional use, the unit weighs just 7kg and features a digital display showing the supercapacitor charge state, a 12V/24V voltage selector, and a Bypass mode for vehicles with heavily discharged batteries. Supercapacitors require no maintenance and suffer no degradation in performance over time, giving the unit a service life rated at 10,000 uses. Operating across an extreme temperature range of -40°C to +65°C, the Startronic Supercap is equally suited to workshop, fleet, and on-site use in demanding conditions.

Key Features

• Supercapacitor jump starter with no internal battery — no pre-charging required
• Recharges in 2–5 minutes from the discharged vehicle's own residual voltage
• Covers 12V and 24V vehicles (petrol and diesel) with batteries up to 150Ah
• 1,050A starting current at 12V / 880A at 24V; peak 1,800A at 12V
• Bypass mode for heavily discharged batteries below 7V (12V) or 14V (24V)
• Maintenance-free — rated for 10,000 uses with no loss of performance
• Digital display showing charge percentage and operating status
• Protected against short-circuit and reverse polarity
• Operates from -40°C to +65°C
• Lightweight at 7kg — suitable for in-vehicle carry

Specifications