to buy a laptop battery
When purchasing a battery for your notebook computer, the first thing a
consumer should look for is the reputability of the product at mind. If
the product is made by the manufacturer of your laptop (i.e. Sony,
Compaq, Dell, etc), you can usually be sure it is a quality product.
However, many manufactures do not actually manufacturer, instead they
are the brander of the product. For example, if you open up a genuine
Sony laptop battery, you may find that the power cells inside are
actually made by Toshiba, Panasonic, or a similar big name company. Sony
in this case has just made the plastic case of the battery. This goes to
show that the brand of the battery you are buying does not necessarily
mean that the quality is superior. Many third party brands use the exact
same power cells as original manufacturers. Using a third party
manufacturer is often a good way to go when buying a battery, as there
are usually many extra benefits. For instance, most third party
batteries are much lower in price than original manufacturers'
batteries. Secondly, they usually offer a superior warranty, as they
realize that in order to win the consumer's confidence; they must stand
behind their product. A one year warranty is a must. Don't buy any
battery with a warranty less than one year. Batteries have been known to
die early, and a three month warranty could leave you high and dry.
The next main thing a consumer should look for is the type of battery.
Batteries can be made using several chemicals. For laptops, there are
four main types. They are Ni-Cad, Ni-MH, Li-Ion, and Li-Poly. There is
no major manufacturer that still makes Ni-Cad laptop batteries, as they
are a very old and primitive type of power. Ni-MH is newer and more
advanced, but is not as good as its Li-Ion and Li-Poly counterparts. If
we compare the last three types (Ni-MH, Li-Ion, Li-Poly), we find that
Ni-MH batteries weigh more than the other two, but produce less current
than the other two. Li-Ion and Li-Poly are the most advanced types of
batteries on the market, and you should try to get one of these two
types if possible. Most laptops that come with one type of battery can
not use any other type of battery, meaning that if your laptop came with
a Ni-Cad, it must be replaced by another Ni-Cad. The same goes for the
other types. Please note that in some cases, this does not apply. Some
laptops that come with a Ni-MH battery can be replaced with a stronger
Lastly you must look at the power rating of the item you're buying. As
technology advances, so do power ratings. The battery you bought last
year may be twice as strong this year, and might even be the same
physical size. Batteries have two main ratings on them: Volts and
Amperes. Because laptop batteries do not carry a very large amount of
power when compared to larger batteries such as car batteries, most
companies show their ratings with Volts and Milliamperes. One thousand
Milliamperes equals 1 Ampere. When buying a battery, always go for the
battery with the most Milliamperes (or mAh). Batteries are also rated by
Watt-Hours, perhaps the simplest rating of all. This is found by
multiplying the Volts and the Amperes together. We will now show you an
example of finding the Watt-Hours for our example battery.
Our example battery is 14.4 Volts, 3600mAh
(remember that 3600mAh is equal to 3.6 Amperes).
x 3.6 = 51.84
has 51.84 Watt-Hours. The term Watt Hour signifies the energy needed to
power one watt for one hour. Thus this battery can power 51.84 watts for
one hour. Suppose your laptop runs at 25.92 watts (this may be unlikely,
but let's use this just for simplicity). This battery could power your
laptop for 2 hours. People usually associate the word 'Watts' with
light bulbs, and yes, this battery could power a 40 watt light bulb for
about an hour and 18 minutes, a 60 watt light bulb for about 52 minutes,
or a 100 watt light bulb for 31 minutes; it's the same idea.
The reason we
have shown you watt-hours is because oftentimes the volts and Amperes
vary. For example our laptop that uses a Li-Ion 14.4 Volt, 3600mAh
battery may use a NI-MH battery that is 9.6 Volts, 4000mAh. Now let's
do the math and find out which battery is stronger.
14.4 Volts x 3.6 Amperes = 51.84 Watt Hours
9.6 Volts x 4 Amperes = 38.4 Watt Hours
Li-Ion is stronger.
Should I get a
This is a very valid question
that every bargain shopper will encounter. Your first option is to
purchase a new battery that naturally has new power cells inside.
Performance will be at 100%, and it usually comes with a 1 year
warranty. However, many companies will either skip that first option by
offering only a used or refurbished battery, or they will give you both
options: the choice of a new or a used/refurbished. Be skeptical when
you see used/refurbished. Usually the warranty on this type of battery
is very minimal. Now if you do not use your laptop very much, then this
may be a great alternative vs. purchasing a new battery in upwards of
$100. Refurbished batteries do not hold as much power when
compared to new batteries. Also, they can kick the bucket on you
randomly since you really do not know how old the battery is. Our
recommendation is to stick with a new battery, or be very careful who
you buy your refurbished battery from.
I get my new battery, what do I do with my old one?
A question that might arise for
many people is what they are supposed to do with their old laptop
battery. We recommend contacting RBRC (Rechargeable Battery Recycling
Corporation). You can visit their website at http://www.rbrc.org.
We are not affiliated with them; however we have heard that they will
take care of your recycling needs. They are also a non-profit company.