3 solutions
Not a current user of ANY of these, but interested.....
Solution # 1
CHEAPEST
http://battery-superstore.com/Tenergy-USB5000-Hybrid-Solar-Charger-for/M/B003EW82ZG.htmAND/OR
http://www.ebay.com/itm/Sunpak-SC-800-Ultra-Slim-Solar-NiMH-Battery-Charger-/190409644186#vi-contentBoth are aa battery chargers, both under 15.00- the ebay one is 12.99 shipped.
Solution # 2
MOST Interesting
http://www.northerntool.com/shop/tools/product_200422034_2004220345 watt amorphous panel
2 lights
7AH 12 Volt battery (84 Watts)
2 12 V DC plugs
1 USB plug
shipping weight ~14.5 pounds
sale price this week 59.00, regular 99.00
Solution # 3
Lets think out of the Box.....
Buy a UPS (Uninterpretable Power Supply) on clearance from Best Buy/Staples/Office Max.
You now have a charger, a 7AH,12 Volt 96 watts) battery, and a cheap inverter, all in one box. New, with a warranty.
NOT on sale ~ 50.00
Bring it home, plug it in. Congratulations, you now have a working back up power supply!
2) buy a standard boring AA/AAA charger. you can buy this anywhere, and plug it in anywhere.
In an outage, plug it in to the UPS, it will charge your AA/AAA about 100 times.
3) Buy a small panel- 5 watt/10 watt- Google shopping, lowest price. (Sears has a 6 watt for 22.00 today. )
To use, take the battery out of the UPS, hook up the panel.
In above example we have a 96 watt battery. With the 6 watt panel- you will put in 6 watts + or -, for each hour of really good sun. If panel is facing south, you will get 4-6 hours of really good sun per day, depending on location/latitude/season/weather. SO 6 watts times 5 hours = 30 WATTS recharge per day.
with a small panel as listed above, you dont need to worry about a charge control.
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