Miner's sealed lead battery is a type of storage battery. Its max. dimensions ofeach side is 50mm x 124mm x 145mm.Advantages: 1 Security: short current and over charged will not lead to explode or fire2 Maintain free: no need to add anything into the battery during the whole life timeof the battery3 Good performance with competitive price: compare sealed lead battery with NI-MHbattery or Lithium-ion battery, sealed lead battery is your best choice 4 Long cycle life: over 400 timesPacking: carton producing area:China payment:T/T in advance, L/C at sight