Charging batteries

From: Philip.Belben_at_powertech.co.uk <(Philip.Belben_at_powertech.co.uk)>
Date: Wed Aug 19 13:12:48 1998

> I have an Outbound Notebook which takes a camcorder-style 12v 2 Ah
> battery. The Outbound's power adapter, which is used to both run the
> unit and charge the battery is 22v, 0.82A. Unfortunately, I don't
> have the adapter or anything similiar.
> What I would like to know is how forgiving the Outbound and its
> battery would be if I used an innapropriate adapter. I have an adapter
> that puts out 14v and 1.2 amps. Am I correct in assuming the 14v would
> suffice for charging the batter (not running the unit)? What about the
> 1.2Ah, though? Will the extra amperage do any harm?

I don't know the outbound, but I can offer the following thoughts:

To charge a 12V battery with a 22V power supply suggests some internal
regulation, in which case 14V probably wouldn't work. On the other
hand, it probably would do no harm.

You don't say whether the 22V is dc or ac - if it's ac, dc might work,
but if it's supposed to be dc, ac could damage your machine.

Most power adapters are constant voltage, and quote a maximum current.
So the requirement is for 22V, capable of at least 0.82A. A power
supply that can put out 1.2A (not Ah) would be ideal.

> P.S. Anybody have a 22v, 0.82A adapter for sale?

I could build you one, but shipping it to the US might be expensive :-)

Philip.
Received on Wed Aug 19 1998 - 13:12:48 BST

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