Doppel runs out of battery very quickly, what do I do?

We recommend charging doppel for at least two hours, or overnight to get full use out of doppel. However, we have also noticed that on some occasions both doppel and the app can give inaccurate battery readings - usually when doppel is in the charging base, or just after it’s been taken out. This is because the battery percentage measurement is estimated from the battery cell voltage which is higher during the charging process. We're currently working on improving this too so please look out for updates.