SC1445 Schumacher 250/50/25/10 Amp 6/12 Volt Manual Wheeled Charger. Start your car in even the most adverse conditions with the Schumacher Electric 250-Amp Engine Start Wheel Charger. Durable quality hands-on control all battery types. 250A 12V Engine Start. 50A 12V 25A 12V 25A 6V Boost. 10A 12V Charge. Manual operation – must be monitored to prevent overcharging. 135-minute timer – for precision control over the charging process. Easy to read meter – shows charging levels. 8-gauge output cables – stay flexible In cold weather. Color-coded clamps – for a solid connection, on top- and side-mount battery posts. Clamps on front with a retractable handle for easy storage. Compact wheels for easy storage. 12 ft. Total Reach – 6 ft. power cord and 6 ft. front-mounted output cables.