[Power] [support-gang] solar power design for 5-to-10 XO-1 laptops in Haiti (or elsewhere!)

[James Murdza]

Thanks all for the outstanding amount of information. I think I will try a
setup like so:

UNISOLAR PVL 136 Watt 24V
Panel<http://www.ebay.com/itm/UNISOLAR-PVL-136-Watt-No-PeelNstick-SOLAR-PANEL-UNI-SOLAR-PVL136-PANELS-144-128/380679951769?_trksid=p2047675.m1850&_trkparms=aid%3D222002%26algo%3DSIC.FIT%26ao%3D1%26asc%3D11%26meid%3D62274773925413104%26pid%3D100011%26prg%3D1005%26rk%3D1%26rkt%3D5%26sd%3D231001584764%26>
->
MPPT Tracer1210RN Solar Charge Controller Regulator 12/24V INPUT
10A<http://www.amazon.com/Tracer1210RN-Solar-Charge-Controller-Regulator/dp/B008KWPGS6/ref=sr_1_5?ie=UTF8&qid=1374553109&sr=8-5&keywords=solar+controller+mppt>
->
12V lead-acid battery. Originally a small UPS battery, but hopefully
getting something more serious when everything else works and the funds are
there.
 ->
Directly to a bank of 5-10 XO 1s, using a charger squid/bank that I'm
putting together myself.

If I order the charge controller in the next 3 hours I can be sure that I
will get it in time for my trip. Otherwise I'll have to fall back on my 12V
controller. Please let me know—does this plan with the charge controller
seem like a safe bet?

Thanks!
James

On Tue, Jul 23, 2013 at 1:38 PM, Richard A. Smith <richard at laptop.org>wrote:

> So long story short is that if you want to use a PV panel with a voltage
> that is over about 2x your battery voltage you need a MPPT controller.
> While the Sunforce controller might work its going to be sub-optimal and I
> suspect will fail prematurely.
>
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