Guide To Charging Sealed Lead Acid Batteries
by Tony Morgan, Senior Applications Engineer, Silvertel, Newport, South Wales
Charging Sealed Lead Acid (SLA) batteries does not seem a particularly difficult process, but the hard part is maximizing the battery life. Simple constant current/constant voltage chargers will do the job for a while, but the battery life expectancy quoted by the manufacturer will be greatly reduced by using such non-intelligent chargers. Maximizing the life of your SLA battery by using an intelligent charger is not only cost effective, it is also better for the environment.
Before looking at the different charging techniques it is important to understand the battery chemistry and what happens during normal charge and discharge cycles.
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