What do YOU think is the best charging option?

[conachair]

Originally Posted by jkindredpdx

Not sure about this, a lot of computers draw 18-19 volts, so you need a DC 12 to ~19 converter (like cigarette lighter style) that is compatible with each device.


JimK

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[travellerw]

Originally Posted by conachair

Adjustable output boost dc/dc converters available off ebay for the cost of a beer.
dc boost 150w | eBay

The bastards at Dell have added a 1-wire eprom with proprietary data. If the computer doesn't see that chip and data, then it won't charge the battery (still powers the computer though). So if you have a Dell, don't bother buying one of those devices.

[jkindredpdx]

Originally Posted by mitiempo

A 12 volt adaptor is available for any laptop.

Agreed... I own several DC-DC converters and still suggest looking at the AC brick that comes with your computer, read the DC output rating (mine for example reads 19v 1.75a), and buy a DC 12v to DC ??v to match that rating.

There are many threads on the CF Electronics Forums where a multitude of geekaholics edify the layman on this topic.

[conachair]

Originally Posted by jkindredpdx

Agreed... I own several DC-DC converters and still suggest looking at the AC brick that comes with your computer, read the DC output rating (mine for example reads 19v 1.75a), and buy a DC 12v to DC ??v to match that rating.

take your pic

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[conachair]

Originally Posted by travellerw

The bastards at Dell have added a 1-wire eprom with proprietary data. If the computer doesn't see that chip and data, then it won't charge the battery (still powers the computer though). So if you have a Dell, don't bother buying one of those devices.

Good point, I've heard that before but forgotten about it.

[vtomanov]

Minimize consumption - All LED and electronic temperature control for the fridge as a minimum and use combination of Solar + Wind - make sure that the charge controllers are MPPT