CPU Frequencies, Voltage & Battery Life - Specific to the HD2

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Re: CPU Frequencies, Voltage & Battery Life - Specific to the HD2

Postby soren » Tue Jul 16, 2013 8:14 pm

NYLimited wrote:While the lower voltage and CPU frequency limits shown above are specific to a device (Nexus 4 in this case) I suggest that it does illustrate the fact that some low numbers are, in his view, not worth considering or implementing.

Food for thought.

Thanks for the information. But that is only his opinion. It doesn't mean that it is not useful for anyone.

On a working day, I use my phone only for about 3 hours. 2mA*21hours = 42 mAh. Also, 3 years+ HD2 will not have full 1200 mAh anymore. 42 mAh or any mAh means something to me especially when my battery is gone or almost gone when I come home.
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Postby NYLimited » Tue Jul 16, 2013 8:27 pm

soren wrote:Thanks for the information. But that is only his opinion. It doesn't mean that it is not useful for anyone.

On a working day, I use my phone only for about 3 hours. 2mA*21hours = 42 mAh. Also, 3 years+ HD2 will not have full 1200 mAh anymore. 42 mAh or any mAh means something to me especially when my battery is gone or almost gone when I come home.


You may well be correct, I don't know.

What I do know is that I used to lower the frequency significantly at one time. Now, I simply use the defaults of the ROM.

Over night while I do not use the device I drop about 6% of battery power.

When my battery was new and I attempted to squeeze more out of it by lowering the frequency to bare minimum, overnight while I didn't use the device I dropped about 6% of battery power.

Gives real meaning to "six one way, half a dozen the other way".. ;)



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Re: CPU Frequencies, Voltage & Battery Life - Specific to the HD2

Postby Robbie P » Wed Jul 17, 2013 12:21 pm

I might be wrong here, but when your battery was new, was it back in the day of SD Android only, before magldr etc?
And now you are on smooth slick 4.2.2 with amazing kernel and stuff.
In that case, the "NYLimited 6% Law" may not be applicable ;) :D
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Re: CPU Frequencies, Voltage & Battery Life - Specific to the HD2

Postby NYLimited » Wed Jul 17, 2013 5:54 pm

Robbie P wrote:I might be wrong here, but when your battery was new, was it back in the day of SD Android only, before magldr etc?
And now you are on smooth slick 4.2.2 with amazing kernel and stuff.
In that case, the "NYLimited 6% Law" may not be applicable ;) :D


Hmm.. Perhaps I should start a new topic on battery maintenance... :D


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Re: CPU Frequencies, Voltage & Battery Life - Specific to the HD2

Postby MarkAtHome » Wed Jul 17, 2013 9:04 pm

NYLimited wrote:Hmm.. Perhaps I should start a new topic on battery maintenance... :D

The only thing that I have found to help maintain your battery is the device's off switch. :|

We don't need another useless thread to deal with. This one, mine, has shown that to be true. :lol:
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Re: CPU Frequencies, Voltage & Battery Life - Specific to the HD2

Postby NYLimited » Wed Jul 17, 2013 9:14 pm

MarkAtHome wrote:The only thing that I have found to help maintain your battery is the device's off switch. :|


You stole me topic! That is what I was gonna say... :x

MarkAtHome wrote:We don't need another useless thread to deal with. This one, mine, has shown that to be true. :lol:


Oh, why not? Useless threads can be fun. Kinda like the emperor's new clothes, no?

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Re: CPU Frequencies, Voltage & Battery Life - Specific to the HD2

Postby MarkAtHome » Wed Jul 17, 2013 11:15 pm

MarkAtHome wrote:We don't need another useless thread to deal with. This one, mine, has shown that to be true. :lol:
NYLimited wrote: Oh, why not? Useless threads can be fun. Kinda like the emperor's new clothes, no?

Come on... please don't encourage... :cry:
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Re: CPU Frequencies, Voltage & Battery Life - Specific to the HD2

Postby Tom » Thu Jul 18, 2013 12:28 am

On the topic of battery life, which apps do you recommend? I use these programs:

Battery Monitor Widget (BMW) for stats
https://play.google.com/store/apps/deta ... .bmw&hl=en

Better Battery Stats (BBS) to identify drain (wakelocks)
https://play.google.com/store/apps/deta ... tats&hl=en

Better Wi-Fi On/Off (BWOF) to manage Wi-Fi
https://play.google.com/store/apps/deta ... noff&hl=en

Gemini App Manager to manage apps
https://play.google.com/store/apps/deta ... d.gmappmgr

Greenify to control apps
https://play.google.com/store/apps/deta ... nify&hl=en


Recently I read of other apps
http://www.talkandroid.com/guides/begin ... tery-life/

What do you use?

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WARNING - Off topic post

Postby NYLimited » Thu Jul 18, 2013 7:32 pm

Tom wrote:On the topic of battery life, which apps do you recommend? I use these programs:
Battery Monitor Widget (BMW) for stats
https://play.google.com/store/apps/deta ... .bmw&hl=en
Better Battery Stats (BBS) to identify drain (wakelocks)
https://play.google.com/store/apps/deta ... tats&hl=en
Better Wi-Fi On/Off (BWOF) to manage Wi-Fi
https://play.google.com/store/apps/deta ... noff&hl=en
Gemini App Manager to manage apps
https://play.google.com/store/apps/deta ... d.gmappmgr
Greenify to control apps
https://play.google.com/store/apps/deta ... nify&hl=en

Recently I read of other apps
http://www.talkandroid.com/guides/begin ... tery-life/

What do you use?


I don't want to go too far away from frequencies and voltages but I sincerely doubt I will be opening a new topic for batteries. :) To answer your question, I have played with most of those apps at one time or another. They are all interesting and, to some extent informative though I am not convinced they are 100% accurate.

Nothing saves my battery more than proper use, maintenance and turning off my device. Seriously, what we do on our devices - the zillion apps we run, most of which like to start up on their own at boot time with most users having no clue.. well, those eat up battery. So does the scren and internet and.. well, you know what I mean.

If I was to open a new topic on this I would likely (once again) talk about the myth of deleting the battery stats file (that and task 29 top my list of useless things to do!) and probably talk about plain maintenance, as in charging.

We have all heard about the "memory effect" -- that if you don't "teach" your batteries their full potential by taking them from totally full to totally empty, they'll "forget" part of their capacity. Although battery memory is a real thing, it applies to nickel-based batteries not the lithium-ion battery most new devices use. Lithium-ion batteries should be topped off whenever you get the chance. Yes, you read that right!

These batteries should be kept in the top half of the charged status much of the time. Going from full to empty and back won't help much, in fact, it'll do a little damage if you do it too often. That said, it's smart to do one full discharge about once a month for "calibration," but I surely don't do it all the time. Running it up and down 100% on a regular basis will shorten its lifespan.

Lithium-ion batteries can get overheated if you are constantly charging them but most of today's chargers are smart enough to cut your phone off once it's full. These batteries don't like being 100% charged either - go figure. They will generally perform best if you take them off the charge before they hit 100 percent. You can safely go from, say 30% or 40% to just a tad past 80% and back for best performance.

Keep them cool whenever possible as heat is the enemy of all batteries and for the pioneers among us, the inductive, wireless chargers out there today can generate a fair bit of waste heat.

Okay, enough off topic chatter. If anyone really needs more on batteries there was a decent article last year in Gizmodo called "The Absolute Definitive Guide" worth reading.


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Re: CPU Frequencies, Voltage & Battery Life - Specific to the HD2

Postby soren » Fri Jul 19, 2013 12:30 am

Regarding the battery, I have heard that after the purchase I need to charge it the first time for a long time like 6 hours or 12 hours+, otherwise I will not ever get the full capacity of the battery. Is that true? I didn't do that. Maybe I forgot it but it doesn't seem right to me because when I purchased my phone there was some battery already. That means it's already charged so even if I charge it right away after the purchase it will not be a first charging anymore. This is bothering me sometimes. Does anybody know about this?
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