The issue in your case is the age of the battery! Batteries wear out from cycles and age. Here your battery is the original one that your system had in it when you bought it 2015/early 2016.
So just like the low tire warning you get in your car you have to consider your usage. Are you dependent on the battery or you tending to use your system mostly tethered to a charger?
Is the battery swelling or running hot when it shouldn't? Then I would replace it sooner
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Reference: To monitor your temp I would install this app [https://www.tunabellysoftware.com/tgpro/|TG Pro]
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Reference: To monitor your temp I would install this app [link|https://www.tunabellysoftware.com/tgpro/|TG Pro]
The issue in your case is the age of the battery! Batteries wear out from cycles and age. Here your battery is the original one that your system had in it when you bought it 2015/early 2016.
So just like the low tire warning you get in your car you have to consider your usage. Are you dependent on the battery or you tending to use your system mostly tethered to a charger?
Is the battery swelling or running hot when it shouldn't? Then I would replace it sooner
Reference: To monitor your temp I would install this app [https://www.tunabellysoftware.com/tgpro/|TG Pro]