Sealed Lead Acid Batteries (SLA) are considered maintenance free, however they do discharge if they are not charged monthly.

Sealed Lead Acid Batteries are the best technology available today for UPS applications, however they must be properly charged at all times to perform effectively in UPS applications.

Common UPS battery charging problems are overvoltage and exposure to excess heat that can come from dense server room environments, etc. UPS devices should be properly ventilated to cool them, to prolong battery life and overall battery performance.

In terms of years of service, sealed lead acid UPS batteries properly maintained may perform satisfactory for as long 2-3 years, this is subject to variation that depends on actual UPS environment operating conditions, and the number of discharge / recharge cycles their UPS experiences.

In a UPS application that cycles over to battery power on a monthly basis, and is kept in a stable temperature environment under 85 degrees Fahrenheit, UPS batteries should last 2-3 years before performance begins to deteriorate. If the UPS is loaded beyond 75%, or the UPS kicks over to battery more than once a month, you may want to replace batteries annually or every two years to ensure maximum runtime and overall performance.

UPS Battery runtime is determined by 2 basic factors; the amount of actual UPS battery storage capacity and the actual amount of power load the UPS. Most UPS applications perform best with 50% or lower load in terms of runtime. Depending on the UPS make model, some UPS manufacturer’s offer solutions adding additional battery packs can extend that, but beyond 30 minutes of runtime, a generator solution usually makes the most sense.

SLA Batteries are Sealed Lead Acid Batteries, non-spillable and maintenance free.