In article .com,
wrote:
Dave Plowman (News) wrote:
In article . com,
wrote:
By "on the road" do you actually mean driving? If parked then just be
careful your battery can withstand being discharged repeatedly.

What do you reckon the capacity of the laptop's internal battery is?

Why is that relevant?

Because it's likely to be be tiny compared to the car battery.

The OP wants to power the laptop from a car battery. In the past I seem
to have buggered a car battery by allowing it to discharge to much
(courtesy light left on for a few hours).

Most courtesy lights don't draw much current - or those that do often
switch themselves off after a time.

Maybe it was on it's last legs
anyway.

Sounds rather like it.

--
*Errors have been made. Others will be blamed.

Dave Plowman London SW
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