The AT&T 8000 Series Battery Is a 12 volt 8 amp hour Sealed Lead Acid (SLA) battery. It is specially designed to be maintenance-free, spillproof and able to operate in any position. This battery is Guaranteed to meet or exceed any OEM specs. Please note that this replacement may have higher amp hours than your battery. Amp-hours are a measurement of run time, so higher amp hours will increase your run time only.