An alternative to the inconveniently bulky roll-up flexible solar panels ar=
e
sectional thin film panels on waterproof fabric. These are lighter weight a=
nd
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 i=
nfo
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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