How accurate is CSD tool's battery health/capacity measurement?
asked 2015-07-12 11:36:04 +0200
So, since last week I have been following the instructions on how to keep Jolla's battery healthy (don't let it go empty or full, personally I stopped charging it at 85%). At the time CSD tool stated that my battery (used for a few weeks) was at 98.57%. No problem there. Yesterday I was doing some app development on my computer and forgot that my Jolla was connected. It had loaded over 90%, so I disconnected it. I was curious if my habit of charging to 85% had any effect on the battery health, and well, it did. My battery capacity was now at 94.50%. I though it was because I had just disconnected the charger so I rebooted my Jolla but it was still at 94.50%. This morning I decided to check it again, and now it's at 93.85%. So, my battery capacity is going down pretty rapidly. Is this some sort of inaccuracy with the CSD tool or is my battery dying? After my first weeks with Jolla it was down to 98.57 and now after a week of "healthy charging habits" it is down by almost 5%!
I would mostly worry about the lack of battery replacement. The CSD is accurate to what it measures.
pmelas ( 2015-07-12 13:07:09 +0200 )editI still have warranty, so if it dies within 5 months I'll be OK. 5% per week means the battery will be down to 0% in less than five months.
jollailija ( 2015-07-12 13:25:35 +0200 )edit5% per week would be a warranty issue already now imo.
lakutalo ( 2015-07-12 17:55:47 +0200 )edit@lakutalo Measuring LiPo batteries is really inaccurate so it could be just a systematic measuring error. I'll keep using my Jolla normally and check the capacity after a week.
jollailija ( 2015-07-12 18:41:06 +0200 )edit