Lightweight Lithium Ion starter battery, 2.86 lb / 1.3 kg kilogram, specially developed for Arircraft engines and big displacement motorcycles and Racing cars up to 1.5 Litre using alternator. up to 1500cc 4 stroke Ducati MVAgusta BMW R1200 GS / RT Other engines w/o alternator up to 1000cc, other engines with alternator up to 1500cc. This newly developed battery is designed to replace the much heavier 14 to 20 Ah lead/acid battery. The super B 7800 is based on the safe Lithium Iron Phosphate technology (LiFePO4), better known as Lithium Ion. The super B 7800 delivers up to 450 Cranking Amps. The super B 7800 offers many advantages over conventional 14 to 20 Ah lead/acid batteries: weighs less: as much as 80% weight saving; < 2.86 lb / 1.3 kg recharges many times faster: within 5 minutes after starting your engine the battery will be recharged; is much smaller: 1/3 or less of the space; 4.7 inch, 3.7 inch, 3.23 inch (WxHxD) / 120mm x 95mm x 82mm (WxHxD); has a longer service life: more than 5 years instead of 2 to 3 years; has a low self-discharge rate. Technical specifications Nominal capacity and voltage 7,8Ah, 13.2 V EqPb (Equals lead acid battery) 14 to 20Ah Recommended standard charge method 14A to 14.4 CCCV, 45 min Recommended fast charge current 30A to 14.4 CCCV, 15 min Maximum continuous discharge 150A Pulse discharge 450A Recommended charge and cut-off V at 25°C 14.4V to 8V Recommended charge and cut-off V below 0°C 15.2V to 2V Operating temperature range -22°F to +140°F / -30°C to +60°C Storage temperature range -58°F to +140°F / -50°C to +60°C Battery weight < 2.86 lb / 1.3 kg Dimensions 4.7 inch, 3.7 inch, 3.2 inch (WxHxD) 120mm x 95mm x 82mm (WxHxD