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Hi Andy,
I am pleased I have a solution to my issue. I think my laptop is a bit of an old beast and battery life has improved over the years.
I will test my deep cycle cell battery and the adaptor and if I get 4 hours out of it I will be very happy!
Thanks for your posts!
Regarding my remarks about chewing through batteries.
How long it will last will depend on how much current your laptop is drawing, how much the other equipment is drawing and the capacity of your deep-cycle battery.
While Mark's laptop might draw 0.9 Amps with a peak of 2 Amps, yours might be different. As I said, if you're only getting around 1.5 hours from your laptop battery it could be a reasonably hungry beast.[/QUOTE]
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