Thanks for the useful info, Bill. The portability looks terrific.
Would take many square feet to charge a 10X 10,000 mAH D-cell pack in
one day's sunlight, but recording off the grid might be doable with
multiple, pre-charged packs. Can I ask where you're getting your 12V
lithium 'brick' batteries? The ones I've come across in bulk have
been fairly low capacity. Rob D.
=3D =3D =3D
At 9:14 PM +0000 10/6/05, werainey wrote:
>An alternative to the inconveniently bulky roll-up flexible solar panels a=
re
>sectional thin film panels on waterproof fabric. These are lighter weight =
and
>fold into remarkably small packages. A new generation of them is also
>affordable and performs pretty well under cloud cover. To power ultrasound
>monitors we're using six 6-watt panels which each weigh 1 lb and cost ca
>$90. Panels up to 40 watts are still quite portable. One mfg with product =
info
>on their site is www.globalsolar.com.
>
>A 12V lithium 'brick' battery would have about the same bulk as your NiMH
>D-pack, but would weigh about half as much, have much lower self discharge=
,
>and probably cost something more than 4X as much.
>
>Bill R.
>
>Rob Danielson <> wrote:
>> We could run our HiMD recorders continuously on a 14" X14" solar
>> panel and be charged for over night too. The high capacity packs for
>> the 722 would take a while to fully charge with portable solar
>> charging technology. Here's a 50 lb, $370 Solar System 400 Portable
>> Power Pack that has " over 2A of charging current,.. or 270 watts/day
>> of charging power."
>> http://www.siliconsolar.com/portable_power_system.htm
>>
> > Rob D.
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