I’ve received the new batteries, not installed yet as I haven’t been home in the daylight, but I thought I’d compare the batteries to see if the weight was different (according to my searches an indication of a fake battery) - no significant difference… (and the batteries all looked the same and looked genuine).
The voltages were more interesting: one old battery was 0.13V lower than the average of the rest. Perhaps not a lot, and if the previous discharge slope is an indication, it’s worth about 2 months of use.
So perhaps no problem with the batteries, and still the possibility of a high-drain Sky. I will install the new batteries and see how they last.
In case anyone’s interested …here’s the chart:
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