JUMPBOX 400 SP-12V400-JB1 400 Amp Lithium-Ion Car Jump Starter and Power Bank 400 Amp peak power and jumps your battery in 1-2 seconds; Jumpstarts most gasoline engines up to V6 and 2.0L diesel , perfect for jump starting dead batteries in CARS, ATVS,UTVS, MOTORCYCLES, PWCS, BOATS and RV's Cutting-edge technology: Controlling and monitoring current flow for optimum performance and maximum safety through solid state switching; Safety: Real time temperature sensing cable clamp design for maximum surface area and maximum boost performance At 5.0"(L) x 2.85"(W) x 0.75" (H) and weighing only .75 lb., the JumpBox V6 Pro 400 has the best size to power ratio of any lithium-ion jump starter on the market The JumpBox V6 Pro 400 comes with mobile phone connectors and has one USB port for rapidly charging any Smartphone The JumpBox has an expect 8-10 years of battery life opposed to the industry average of 3 years because the solid state switch will put the battery in a hibernation mode when the battery is not in use