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A few questions about laptops - Page 2

post #11 of 14
Quote:
Originally Posted by shad0wboss View Post

I agree with all the statements except the last one partially. Heat does kill Li ion batteries but Laptops can be good desktop replacements IF, there's a big IF, If batteries are kept cool (i use laptop cooler for that) then your battery will be out of harm.

This won't do anything really. I kid you not. I have the CoolerMaster U3 and it doesn't make a bit of difference in the end where that third fan goes. I just prefer to keep my HDD at a reasonable temperature so my data doesn't go kaput.
     
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post #12 of 14
Quote:
Originally Posted by The Lurking Ninja View Post

here is proof via request.
If your battery in Li-ion
3: Allow partial discharges and avoid full ones (usually)
Unlike NiCad batteries, lithium-ion batteries do not have a charge memory. That means deep-discharge cycles are not required. In fact, it’s better for the battery to use partial-discharge cycles.
There is one exception. Battery experts suggest that after 30 charges, you should allow lithium-ion batteries to almost completely discharge. Continuous partial discharges create a condition called digital memory, decreasing the accuracy of the device’s power gauge. So let the battery discharge to the cut-off point and then recharge. The power gauge will be recalibrated.
There's 2 different types memory? Can you explain each one?
Edited by Bitech - 10/20/12 at 3:02pm
post #13 of 14
Quote:
Originally Posted by Imglidinhere View Post

This won't do anything really. I kid you not. I have the CoolerMaster U3 and it doesn't make a bit of difference in the end where that third fan goes. I just prefer to keep my HDD at a reasonable temperature so my data doesn't go kaput.

well as mentioned that heat is Li ion's enemy. I use a cooling fan (has 2 fans running at around 1500-2000 RMP approximetly and are quiet noisy. I game for about 2-3 hours everyday, the cpu goes ALL CRAZY (i7 3610qm) though the HDD remains at 34° and battery remains cool...maybe it's just my HP laptop.
post #14 of 14
Quote:
Originally Posted by Bitech View Post

There's 2 different types memory? Can you explain each one?

There are two types.

Cyclic Memory and Digital Memory
Quote:
First we must distinguish between memory effect and digital memory effect. A memory effect is the concept that was derived from cyclic memory. Cyclic memory is the thought that a battery could “remember” how much energy was used up on previous discharges. Cyclic memory only affects nickel-cadmium batteries.

BatteryEducation

i know this isnt a true source but here
Quote:
Memory effect, also known as battery effect, lazy battery effect or battery memory, is an effect observed in nickel cadmium rechargeable batteries that causes them to hold less charge. It describes one very specific situation in which certain NiCd batteries gradually lose their maximum energy capacity if they are repeatedly recharged after being only partially discharged. The battery appears to "remember" the smaller capacity.[1] The source of the effect is changes in the characteristics of the underused active materials of the cell.[citation needed] The term is commonly misapplied to almost any case in which a battery appears to hold less charge than was expected. These cases are more likely due to battery age and use, leading to irreversible changes in the cells due to internal short-circuits, loss of electrolyte, or reversal of cells.

Wiki


Then there is Digital Memory
Quote:
The digital memory effect is a failure mode (see my article series on Battery Failure Mode and Effects Analysis) whose effect results in the transmission of improper calibrations of the battery’s fuel gauge to a device.

Same Source as above

Finally about all batteries,
Quote:
All batteries will self discharge over a period of time naturally whether the battery is used or not. This means that the battery capacity will go from 100% down to 0% over a time period regardless if the battery is being used or not. Again recharging the battery corrects this naturally occurring reality.

Battery Tech

thumb.gif

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First Beginnings
(16 items)
 
Easy Storage
(11 items)
 
 
CPUMotherboardGraphicsRAM
i5 3570k GA-P67A-UD7-B3 Gigabyte R9 270x G.SKILL Ripjaws X Series 1600mhz 
Hard DriveHard DriveCoolingOS
Crucial M4  Seagate Barracuda  Corsair H60 Windows 8.1 Professional 
MonitorMonitorKeyboardPower
Acer A231H 23" Acer M230A 23" LCD 1080p Razer Lycosa CORSAIR HX 850W 
CaseMouseAudio
AZZA Hurrican 2000 CSAZ-2000 Razer Lachesis Hercules XPS 5.1 70 Slim 
CPUMotherboardGraphicsRAM
I5 2500k Gigabyte P67X-UD3-B3 XFX 6870 GSkill DDR3-1333 
Hard DriveOptical DriveOSKeyboard
Seagate Barracuda  Samsung Blu-Ray Windows Home Server 2011 Logitech Wireless Combo MK260 
PowerCaseOther
Antec NEO ECO 520C 520W NZXT Source 210 ARCTIC F12 120mm (x5) 
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