Tom's Hardware > Forum > Laptops & Notebooks > General Laptops & Notebooks > Difference between AC adapter and battery charger?

Difference between AC adapter and battery charger?

Forum Laptops & Notebooks : General Laptops & Notebooks - Difference between AC adapter and battery charger?

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Archived from groups: comp.sys.laptops (More info?)

What is the difference between an AC adapter and a battery charger for
my IBM Thinkpad? The reason why I ask is that I have an AC adapter
connected to my Thinkpad. This works except the battery is not
charging.

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Archived from groups: comp.sys.laptops (More info?)

Wes <Wes@home.com> wrote:
: What is the difference between an AC adapter and a battery charger for
: my IBM Thinkpad? The reason why I ask is that I have an AC adapter
: connected to my Thinkpad. This works except the battery is not
: charging.

The charger is built-in to the computer. You could get an off-board
battery charger to charge your main battery or a spare while you
work. Chargers usually don't charge very quickly while you are using
the laptop on AC power.

Your battery may be toast - how old is it?

Andrew
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Reply to Andrew

Archived from groups: comp.sys.laptops (More info?)

The charging circuit is in the laptop. The AC supply in MOST laptops
simply supplies some DC voltage to the laptop. The laptop uses this in
a variety of ways, one of which (but only one) is to charge the battery.
The AC supply is not a battery charger, but really a DC power supply.

Wes wrote:

> What is the difference between an AC adapter and a battery charger for
> my IBM Thinkpad? The reason why I ask is that I have an AC adapter
> connected to my Thinkpad. This works except the battery is not
> charging.

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