06-29-2018 08:52 AM
Title says it all, I know this topic of discharging internal battery first has been brought up a lot, and that the reason behind it is this: The T470s are designed to drain the battery with least wear first so as to degrade both batteries equally and prolong the laptop's overall battery life.
However, as I'm using a new 61++ battery, clearly somethig is going wrong somewhere as the year old internal battery cannot be in better condition than the brand new external.
07-10-2018 05:33 AM
It's not the cycle count that defines wear. Instead, wear is defined as full charge capacity divided by design capacity. In your screenshot, the internal battery has a full charge capacity that is actually above the design capacity. That's probably why it's still discharging first. I couldn't see the design capacity of your external battery from your screenshot.