Tuesday, February 2, 2010

[Electric Boats] Re: DIY activation charger

 

Keith,

I have never understood whether the HP laptop power supplies deliver AC or DC to the computer. If DC, is it full wave rectified and not filtered, or is it highly filtered and regulated.

Thanks.

Jim Rock

--- In electricboats@yahoogroups.com, "aweekdaysailor" <aweekdaysailor@...> wrote:
>

> I have a bunch of old laptop chargers - they all put out somewhere between 15 and 19 volts and about 65watts, so I just added clips in place of the plug (use a voltmeter to establish +- - usually + is the inner wire). After about 10min, the electrolyte was bubbling nicely. The charger gets a bit warm as it will definitely put out maximum amps when confronted with a large battery, but for these short periods of time, should be fine.

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