This April I just installed the Aqara Lock A100 and used the battery that comes with it. However, this month, the battery suddenly went flat which mean I wasn't able to unlock the lock at all. Thankfully, I have a portable power bank with me to power it up.

I have been monitoring the Battery % via the app and I noticed that for weeks, it was reading at 88%. Does anyone experience inaccurate battery reading? I thought there also an alert at 20% but I didn't get that too.

I read online that the battery was supposed to last more than a year but mine barely make it pass 5 months.

Now it is almost 3 weeks since I changed the battery and the reading shows 98%, but I can't even determine if that is accurate.