I'd like to buy a new battery for my laptop Fujitsu S6231 (battery
model FPCBP80AP). Many sites sell "replacement" batteries, i.e.
batteries that are not manufactured by Fujitsu (non-OEM). When I asked
them about the battery life, they said that it lasts about 2-3 hours.
But a Fujitsu original brand new battery lasts 4 house (I tested). Can
this be true that a non-OEM battery has such a much shorter lifetime?
Or should I buy a battery from Fujitsu to get the most battery life?

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Request for Question Clarification by keystroke-ga on 04 Aug 2006 11:57 PDT

I have had a few laptops and I always get my laptop batteries from the
manufacturer, they are usually perfectly calibrated to work with your
laptop. I have found that compatibles are just not as good.

Think of it like this, Duracell make amazing batteries, WALMART own
brand batteries just don't last as long. It is a similar thing.

I would totally advise you to get a Fujitsu battery.

Does this answer the question?

--Keystroke-ga

Many of the after market products just as your Non - OEM battery are
made to match or exceed the manufactures specs but there are 20-30% of
manufactures that may or may not advertise there product specs. IN
YOUR case I would sugest looking for what batteries have the most
"MAH's or Mill Amp Hours it is desighned for. To simplifie the codes
widly used a 2500 M.H.A. battery will diliver 2500 Millamps for 1 hour
or in all most every case 2500 M.H.A.'s = are rated with the time used
being the deciding factor for leanth of batteries usage per charge.
(ie. If you have a 2500 MHA battery (Be sure the voltage is the same
in ALL cases) and your device consumes 500mh per hour it should last 5
hours , ie 5 hours x 500 mh= 2500 mahours))
 In more detail research I would personaly guide you toward the
"Conumers Inion" magazine. It does not accept ANY advertisments and
test every thing from flashlights to Cars. I have found out several
times thru the years it has been extreemly accurate 99.99% of the
time.

"Conumers Inion" =? "Consumer's Union" ???

2,500 Mega Amp-Hours??? Wow!!! If we had batteries like that for
laptops we would not need nuclear reactors. (Forgive me, I just love
it when prefixes are improperly capitalized. or forgot to get
capitalized (like 100 mHz))

Try e-bay. Enter the number and you will get a lot of listings. As
long as the capacity and voltage is the same it should perform about
equal. Unless you cheap out and buy one from outside US or the
cheapest in the list.

I personally have found replacement batteries to work great.  I bought
a battery on http://www.laptopsforless.com/laptopbattery for my iBook
and it has worked great , plus it cost significantly less.