Changing the battery, what about the charger?

[johney]

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!

 

[buwish]

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.

 

[johney]

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

 

[buwish]

It probably would be a good idea to use 75, as the components, i.e. the motherboard are made for a 75w charger.

 

[johney]

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..

 

[johney]

Best answer selected by johney.