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Changing the battery, what about the charger?

Last response: in Laptops & Notebooks
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September 1, 2010 3:30:57 PM

Hi there!
I own a Toshiba Satellite A105-S4074 and my battery and charger died. What I want to do now is buy the 9-cell (6600 mAh) replacement battery instead of the old 6-cell (4400 mAh) one and also a new replacement Toshiba charger.
Now my question is will the normal charger which is 75W (15V, 5A) suffice, or do I need to buy a 90W (15V, 6A) one, or is the normal one just fine for my new battery?
Are there any benefits at all for using this 90W charger?
Also, on a side note, I've upgraded my CPU from a TDP 31W (T2050) to a TDP 34W (T5600) and my RAM from 512MB to 4GB.
Currently I only have access to a cheap universal charger that's 120W, but that's only temporary untill I get home, because I don't want to risk my new battery with an aftermarket charger.
I measured the voltage output of this aftermarket charger and it's 15.84 V.
I haven't tried out my new RAM and CPU with a 75W charger.

Also, I'd appreciate any tips you can give me so the new battery lasts for a couple of years.

Thanks a bunch! :) 

Best solution

a b D Laptop
September 2, 2010 2:29:22 AM

A 90W charger will charge the battery a bit quicker, but otherwise than that, it won't make much a difference. As long as the voltage is the same, you should be fine. Also, the upgrades you made shouldn't affect it either.
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September 2, 2010 2:48:24 AM

Isn't it safer though to use the 75W charger? Since the 90W can pump more voltage then it's supposed to, right? Like this aftermarket charger I'm using now, it puts out 15.84V
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a b D Laptop
September 2, 2010 2:52:11 AM

It probably would be a good idea to use 75, as the components, i.e. the motherboard are made for a 75w charger.
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September 2, 2010 3:04:15 AM

Yes I agree, my only fear is that the 75 charger won' have enough juice to charge the 9-cell battery and power the laptop at the same time..
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September 10, 2010 10:50:32 PM

Best answer selected by johney.
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