UltimateRace Features & Specifications Experience the performance and safety of the UltimateRace™ series of 12v managed lithium ion batteries, designed as a drop in replacement starting battery for cars, motorcycles, and general powersport applications where weight and reliability are a factor. This high performance ultra lightweight battery can be used as a direct replacement for heavy lead acid batteries, while improving battery durability and lifespan. Typical battery weight reduction is 50-80% compared to lead acid. This is a "managed" battery, incorporating advanced electronics making it more durable and long lasting, typically 2-5 years depending on usage. The battery cannot be over charged or discharged, so you will never hurt the long term durability and performance of the UltimateRace™ battery by leaving your lights on or overcharging. This battery can also take long term abuse better than any lead acid battery, and will not loose charge sitting over the winter so no more dead batteries in the spring. SHIPPING Q1 2012! Nominal Voltage: 12V Max Discharge Rate: 480A 3.3lb (480A) Max Charge rate: 15A Safe to charge with any alternator or lead acid battery charger