Posted under orbit timers... product not identified
Many timers today have a backup 'battery' that is actually a capacitor located on the circuit board.
Generally the battery is not replaceable and is specific to the circuit board design and model of product.
Product manuals and manufacturers call it a battery because it works like a battery to preserve settings during brief power outage.
If the timer has a replaceable battery, then there will be a small door located somewhere on timer that can usually be popped open using thumb or small tool.
There are some timers that have a replaceable battery... this applies to wall timers, box timers, timer modules, and sprinkler timers etc... and this is very useful for some applications because the timer can operate loads independent of using voltage.
Disadvantage of replaceable battery is failure due to cold weather or bad battery connection. Advantage of capacitor-type battery is low cost and high reliability.
http://waterheatertimer.org/Override-thermostat-with-programmable-timer.html
http://waterheatertimer.org/Gardena-timers-and-manuals.html
Gene
Water Heater Timers Save Money If you need further help, I’m available over the phone at
https://www.6ya.com/expert/gene_9f0ef4df2f9897e7
×