The iFixit instructions with the replacement battery says to charge, drain, and charge. Does anyone know how to drain the battery in a consistent way and how long does it take to do so. Obviously, reconnecting the thermostat back to the base wonโt work since it can charge from the base.
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Hi @sscollis ,
Try disconnecting the power from the base.
As to how long it takes would depend on how much charge the battery has and what the load current is. I donโt know the answer to this.
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If you disconnect the "C" wire (probably blue) it will probably drain. Might take several days and inevitably will die at 2 am when it's 95 degrees out and you will wake up in a hot sweat! Personally I think that whole "memory" thing with batteries is left over from old NiCAD batteries and likely unnecessary for this application.
@nicksartor Nowadays the charge/drain instructions are not for the benefit of the battery "memory", but rather for the sake of battery health calibration to establish a full/empty baseline for monitoring the battery charge.
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