[bo_woods]

How is it? :P

[snakebitten]

On mine it's a non factor. In other words, it gets unplugged from charger and I head off to work. Gets plugged back in around 10pm, when I climb in bed to read. (Love that big phone\battery)

However, there are reports on all models and aspects that vary wildly with these builds.
One 1520 will report smooooooth experience. The next is a overheating time bomb. :)

[signal-2-noise]

How is it? :P

More disappointing than previous builds/8.1. There's numerous comments about this.

[Ivan05il]

It's pretty good on mine. With 512 it would heat up randomly, now it's cold, except when I start Candy Crush Saga. For now it feels like 8.1. But it is a couple of days only, let's wait if it lasts. I installed 536 from 8.1 and did not hard reset.

[houkoholic]

Couldn't comment yesterday only after a day of install cos it is not my "normal" usage as I was busy playing around with it and updating apps, today I'm back to my "normal" usage and on my 1520 I lost about an hour or two of battery standby time compared to when I was on 8.1 (22hrs vs 24hrs, according to battery saver), to me that's very acceptable for preview, and looking promoising that more optimization in the final build will have equal or better battery life than WP8.1 (which is the case for W10 against W8.1 where it measures slightly better).

[Ma Rio]

For me, it's 2-3 times worse than on 8.1.
For example - I open up messenger, check if I have any messages there. Check facebook, twitter, vine (6sec), store for updates, and WindowsCentral app.
That's all done in under 5 minutes, and that costs me 10% of my battery. It's insane, however I can go trough my day with a single charge.

[Sedp23]

I'd suggest hard resetting and giving it a couple days before judging the Battery. When I first installed it it was draining fast but after a hard reset it improved