| Ron Hunter 2007-05-31, 7:33 am |
| Joe Laur wrote:
> Piggybacking on Dale's note, somewhat. I believe Sarah has a rather limited
> view of electronics and batteries, to insist that all equipment in the
> universe must be USB powered.
>
> My Magellan 2200T has a great battery, lasts about 8 hours (therefore I
> almost never plug it in while driving). But to recharge that, it takes a 2
> amp adapter, and therefore it only takes a couple of hours to get a complete
> charge. If limited to the 500 ma of a USB power supply, it would probably
> take 8 hours to charge an 8 hour battery (which seems pointless).
>
> Similarly, I have one digital camera (Fuji) that uses USB power, but my
> Panasonic takes a 6 volt - 1 amp connection to run it, anything less is like
> running on very slow (= dying) battery.
>
> I do have 3 cell phones, all from different manufacturers, that use a
> "common" cell phone adapter (~5mm round plug), so one adapter in the car can
> charge any of them. Since none of the phones connect to a computer, I
> imagine the manufacturer saw no need to use a computer standard to provide
> power, when a common 5mm plug works just fine.
>
> The USB connector works great when the battery and device are of the size
> and design such that it's an appropriate power supply. But since not
> everything in the universe fits that limited spec, it's inappropriate to
> limit yourself to only those devices. Just go with the device that has the
> best features, and live with the fact that there are multiple power
> requirements.
>
> Joe
>
>
>
> "Dale DePriest" <Dale@gpsinformation.het> wrote in message
> news:135rfi1d41ee19c
@corp.supernews.com...
>
>
The eXplorist line (400-600) have internal lithium batteries that will
run the 400 for about 17 hours, continuous. The battery charges with
the included AC adaptor in about 3.5 hours, but recharging from the USB
takes overnight. If one can accept the slower charge time, for the
added convenience, this is workable (it is for me). Generally, using a
lower current will work, but take longer, while a higher current may
damage the device, or the battery.
|