Quote Originally Posted by papi smith View Post
1 noticed that my Amaron Pro is already 20 months old, so I decided to charge it to test it's health. I was surprised that it started at 40% battery level but quickly went to 95% in 15 minutes. In comparison, my other Amaron Go of the same age showed 95% when I charged it. After 2 days in the garage, I charged it to check how much it retained. To my surprise, charging started at 5% but went up to 50% in a few seconds.Then in about 15 minutes, it was back at 95%. Is this normal? I don't feel any symptoms of a weak battery yet. I'm going to have it checked by the supplier on Saturday and it's still under warranty till 24 months.
You need a proper battery analyzer or tester to accurately measure its state-of-health (SoH). The internal resistance is the main indicator for SoH.

And unless the battery was subjected to frequent or high depth-of-discharge (DoD) greater than 50%, 20 months is nothing for an Amaron. If it was taken cared of, 20 months should put it roughly just 1/3 of its lifespan.

Mine lasted a little over 5 years (~60 months).