New answers tagged battery
Eneloop batteries are NiMH which has a normal voltage of 1.2V vs. 1.5V for an alkaline batteries. Your thermostat uses two batteries so the Eneloops will generate 2.4V instead of 3V for fresh alkalines. At a worst case, the thermostat will not work (or report low batteries with fully charged batteries). Best case, the batteries will last for a short time. ...
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