A week plus into the S6 Edge's battery life ...

I've been reading for the past week or so complaints about battery life on the S6/S6 Edge line of smartphones from Samsung. I had also been documenting my own usage on the device and I have to say my experiences have contrasted widely with what I've been reading online. Perhaps the online reviews have been overly concerned with screen on time (SOT), I really don't know.

I bought the phone on the 11th of April but only started checking out battery life on the 15th, after I had had some hands on time with the phone.

Day 1: Nigh 13 hours of usage with 2 hours more to go ...

Day 2: Pushed the phone harder but still received 11h of usage with an hour more to spare

Day 3: Spotting a pattern here, close to 12h of usage with almost nothing to spare

Day 4, weekend, slept in! No work and a lot more phone time - a lot more gaming, a lot more music - battery still held up pretty well.

Day 4: 11h of usage with an hour to spare

Skipped Sunday ... can't remember what it was I was doing but whatever it was, it was good enough to forget to document battery usage.

Day 5, Monday was when the wireless charging or the phone started acting up. On the previous occasions, the phone was placed on the charger before I went to bed and the charger kept the phone charged all the way till I picked it up at 6.40ish in the morning. Not this time though. See how it starts draining right before 3am?

Picking it up at the same 640ish time that I did on the previous mornings yielded a battery life of  85+%. Not happy about this but at the same time it can be see that the phone generally sips power when the screen is not on.

Day 5: 17h with about an hour more to go and no, I did not top it up in midday.

Same problem causing the phone to run out of battery at about 4pm as I had placed it on the charger even earlier the previous night.

Day 6: 16h of battery life means nuts when most of it is happening when you're asleep!

Hmmnn ... took ill, was home so spent quite a bit of time on the phone. Weird thing was the battery stayed charged all the way till it was taken off the charging pad.

Day 7: 12h of battery life with an hour to spare

And just like that, the problem came back again. Wireless charging turned off at 1 or 2 am in the morning.

Day 8: Nigh 17h of battery life with 40 mins to spare

Battery charged all the way till morning this time round.

Day 9: Roughly 16h of battery life.

I'm genuinely curious if this is a software or hardware issue that is causing the wireless charging to cease once the battery hits 100%. Is it a safety feature?
I can vouch though that charging off the usb cable does not present such a problem.

At the end of the day, I'm pretty satisfied with the battery life on the S6 Edge - bearing in mind that takes into account my usage pattern.