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really helpful
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Posted: 2008-07-22 15:16:57
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thanks really helpful
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Posted: 2008-07-22 23:43:45
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Hey some of you got it wrong about Li type batteries.

It is preferred to charge them before the battery runs flat. Read the Memory Effect section over here:

http://www.powercellkorea.com[....]mode=viewList&category=&page=2


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Posted: 2008-08-25 01:01:33
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that link says nothing about li-po having memory affect. Check you facts.

re: using until flat, most modern lithium batteries don't allow the battery to run fully flat - battery electronics power down the battery, and therefore the phone, before it is completely empty (otherwise the low voltage will reduce the batteries life cycle). So you can't run the battery flat even if you want to.

re: over charging while full, in this case lithium battery charger stops charging automatically once the battery is full so it's also not possible to over-charge the battery (and therefore you do not reduce the battery lifecycle by leaving the battery on charge after it has fully charged)

[ This Message was edited by: max_wedge on 2008-08-25 07:29 ]
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Posted: 2008-08-25 05:39:20
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here is what they say:
There is, however, no 'memory effect' in the Li-ion cell so that the life span of a Li-ion cell is not influenced even though the battery is discharged and recharged repeatedly at all times. On the contrary, you can get the effect of lengthening the life span of the battery if you use a little and recharge it again and over again. With this reason, more people prefer to the Li-ion cell and the demand is expanding even though its price is higher than that of the nickel battery.

Source from http://www.powercellkorea.com[....]mode=viewList&category=&page=2

Actually I meant using a little of the battery and not running flat. Sorry about that


[ This Message was edited by: StevenC on 2008-08-25 09:47 ]
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Posted: 2008-08-25 10:45:57
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what that link is saying if you read it properly, is that you can discharge the battery just a little bit then charge it up straight away (without waiting for it to discharge fully), and if you do it frequently it's good for the battery. If you did this with older style batteries you'd incurr the memory affect.

Therefore it's saying that lithium batteries DO NOT have a memmory affect, even if you regularly charge them without discharging fully first.

Suggest you study up on more than one poorly written page (which you have misread anyway) before you go telling us we are wrong
_________________
Tricks and Tricks for K800 File System Tweaks for K750

[ This Message was edited by: max_wedge on 2008-08-25 10:09 ]
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Posted: 2008-08-25 10:57:42
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if the battery doesn't have electronics to prevent it from fully discharging, then it's a good idea not to run the battery flat. Lithium battery chemistry will degrade rapidly if it is allowed to run down to a very low voltage. But if the battery has electronics to turn the battery off before it reaches the critical low voltage level (ie: mobile phone batteries), then running the battery low won't reduce the life cycle.

So you can pretty much charge the battery whenever you need to without worrying too much about affecting the lifecycle of the battery.

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Posted: 2008-08-25 11:08:02
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The advantages of Li-poly over the Li-ion design include lower cost manufacturing and being more robust to physical damage (according to Wikipedia). Also, according to other sources I read some time ago, Li-poly batteries can be made smaller and lighter than Li-ion. The three underlined reasons are enough for any mobile phone manufacturer to choose Li-poly over Li-ion.
The notebook manufacturers will most likely choose Li-ion batteries, because of the longer cycle time and because a few tenths of grams in weight added to a laptop are of no concern.

_________________
K850i / R1FA035 with 4GB microSDHC.
Proud owner of a K750i (R1CA021 / self-modded camdriver) which flawlessly did its job for 2 ½ years and still kicks ass.

[ This Message was edited by: catalinux on 2008-08-25 10:45 ]
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Posted: 2008-08-25 11:42:37
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thank man its very use full thanq

____________________
Regard's,
Rakesh.
Worldinfo
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Posted: 2008-08-28 13:06:26
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Yup, thanks for this!
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Posted: 2008-08-31 06:24:25
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