Help Battery life - is this as should be?

bertieb · Nov 15, 2013

I have owned a Note 8 for just two weeks and I'm wondering if I need to take it back to the supplier.

From a full 100% charge, even with battery saving mode enabled - I find that just 39 minutes of web browsing and looking at emails uses up 10% of the charge. That equates to just 6.5 hrs battery life

Having read many online professional reviews I am aware that battery life is not the the strongest point with the Note 8 but even that said - reviews suggest that for browsing - a battery life of 8+ hrs should be expected.

Can anyone advise from experience on the issue, please.

Cheers Bertie

SORRY IF THIS THREAD IS DUPLICATED - I DID ONE EARLIER BUT IS SEEMED TO VANISH!

Rukbat · Nov 16, 2013

Fully charge the battery. Leave the tab turned on, with all apps off. See how long it takes before the tab tells you to reconnect the charger.

If a few other people do the same thing, you'll get an idea of where yours falls. They may all have short lives, yours may be exceptionally short or they may vary all over the place. Try to get some numbers before everyone starts guessing.

NeoGrandizer · Nov 16, 2013

Might help to know which Note 8.0 you have as there are different variants available.

If it's the LTE model, LTE can be a battery hog and could cause that type of drain. Also dependent on the signal strength. Weak signals mean greater battery drain.

I don't have a Note 8.0, but those are other factors to consider as well.

bertieb · Nov 17, 2013

NeoGrandizer said:
Might help to know which Note 8.0 you have as there are different variants available.

If it's the LTE model, LTE can be a battery hog and could cause that type of drain. Also dependent on the signal strength. Weak signals mean greater battery drain.

I don't have a Note 8.0, but those are other factors to consider as well.

Not the LTE model as far as I can ascertain as no reference to that in the model number on back of tab.

Interesting fact is that my Wife also has a Note 8, purchased on same day as mine. With hers - it takes 60 minutes of web browsing and looking at emails to use up 10% of the charge. That equates to just 10 hrs battery life. As I've already indicated - corresponding figures for my tab are 39 minutes for 10%!

Took the thing back to the supplier who tested it for 24 hrs - said nothing wrong with it but when I got it back I found they had installed Wakelock Detector on it and the stats indicated that they had run it for about 1.2 days - of that time about 21 hrs had been in deep sleep and only 6.2 hrs had it been active - there was 4% battery charge remaining! Of course, I have no way of knowing whether they had fully charged it before starting the test but I would guess so!

I kept it running with video streaming - wifi and bluetooth running. It quickly dropped to 1% then carried on for another 1.5 hrs before it finally died!

Battery life problems are so nebulous - therefore difficult to prove as faulty!

jimventola · Nov 19, 2013

For what it is worth, I thought I had a dud too. I went online to Samsung's support page, got a chat agent, and he talked me through doing a hard reset back to factory settings. Since then the battery lasts a long, long time. It took a bit of time because I had to register on the Samsung site and find my serial number and model number, and typing back and forth is slow--but it solved the problem and I didn't need to send it in.

bertieb · Nov 19, 2013

jimventola said:
For what it is worth, I thought I had a dud too. I went online to Samsung's support page, got a chat agent, and he talked me through doing a hard reset back to factory settings. Since then the battery lasts a long, long time. It took a bit of time because I had to register on the Samsung site and find my serial number and model number, and typing back and forth is slow--but it solved the problem and I didn't need to send it in.

Thanks for that advice - it's encouraging!

Plan on running one more test comparison with my Wife's Note 8 and then armed with that will go online to Samsung Support.

Thanks again!

Ssith · Dec 27, 2013

you need to let the device drain to under 15%*, then charge it to full. new devices don't yet have the battery stats saved, so they're simply doing calculations on the fly based on "i was reset, i must be at 100% power. i lost 10% of my power, now i'm at 90%". if the initial reset was done when the device was at 80%, you're looking at 20% 'missing' battery. letting the device power way down and then fully charging it will set in memory what the actual battery stats are.

also: i'd advise telling it to turn off data connections while sleeping. unless of course, you MUST receive communications through it. i don't have to - i have a phone for that - and i turned wifi off while sleeping, and it doub6led my standby time.

*or lower, sub-10, if you're feeling frisky - just don't let it shut itself off via low battery, as that's not good for the battery. i saw you already did that. once isn't going to hurt it, but make a habit of it, and you'll lose the battery a lot faster.

bertieb · Dec 27, 2013

Quote =

also: i'd advise telling it to turn off data connections while sleeping. unless of course, you MUST receive communications through it. i don't have to - i have a phone for that - and i turned wifi off while sleeping, and it doub6led my standby time.

r.[/QUOTE]

Thanks for that, much appreciated!

Not sure whether you can turn off wi-fi/notifications when sleeping on Galaxy 8!?? Have looked under settings but can't see how.

Cheers
Bertie

bertieb · Dec 27, 2013

Have now figured out how to get wi-fi to switch off when tablet is in sleep mode - via settings/wi-fi/advanced settings. However, the only settings for data usage relate to "retrict background data" and "auto sync".

Ssith · Dec 27, 2013

there should be a switch for "keep wi-fi on during sleep" in there. it'll have three options - always, only when plugged in and never.

Help Battery life - is this as should be?

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