any vented 12v battery (car, truck, rv, etc) vents hydrogen as it discharges. This can explode so if you are using those kinds of batteries, keep them outside and away from sparks. venting is a good thing.
A small freezer won't take that much current to run. Especially if you look for one of the ultra insulated units with a low draw compressor. It would sure cut down on the system requirements though. It's not prohibitively expensive to go in with a small solar unit. It just gets really costly when you try to run your whole house on it. Wind is where it's at if you have much of it. My land in Colorado almost always has enough wind to drive a generator.Nice set-up, you are far ahead of me. Recharging batteries with solar is definately on my priority list. One of other goals is to find out if I can run a small 5 cubic foot freeze. I don't know if thats possible and reasonably priced.
If I can make ice and keep meat frozen that would huge in my overall plan. Maybe I'm dreaming but now that my food preps are nearly complete I want to explore all the possibilties in that area.
I see you remember the licence plate idea my son is doing, he still does that on Saturday mornings and some during the week if he needs the money. So far that hasn't been any problems. I keep telling him to NOT tell his friends or you'll have competion!
IIRC, I bought a bundle pack of those TENERGY NiMH batteries last year for about $100 shipped (4 D, 4 C, 24 AA & 12 AAA) from All-Battery.com.I think the highest you can get right now is 2600 mAh NiMH. I will check the site I order from. Or better yet here you go:
Hmmm...this is very interesting to me.I have a solar powered set up. It's a little expensive, but it works good. I start out with a 5 watt solar charger battery charger, I got at Harbor Freight, that charges up two deep cycle UPS batteries I have. Then I connected up a 1500 watt inverter to convert the 12 volts to 110 AC, and that'll power up standard lamps to light up my house. This also gives me up to 1500 watts of 110AC for small appliances as well.
Solar panel from Harbor Freight......$ 40.00
two UPS batteries........................$ 40.00 each
110 ac 1500 watt inverter.............$ 120.00
Misc cables, extention cords..........$ 25.00
Two lamps with bulbs about ..........$ 20.00
So for under $250 I have a solar powered emergency lighting system. This will also power small hand tools, drills, grinders, saws.... etc.
Great, thanks for the info.First off, I'm not using car batteries, I'm using two UPS deep cycle batteries, they are better suited for back up systems and charge better. I got them used at a battery store for $40 bucks each.
They will supply your electrical needs depending on how much wattage you are using. A coffee pot for example will pull a lot of watts and make your batteries run down faster than just a couple of 13 watt cfl light bulbs.
I came real close to getting the Harbor Freight inverter but bought one from 12 Volt-Travel instead, about the same money but mine has a really handy meter on it's front panel that will tell you how much wattage your using. The inverter you link to is only a 400 watt inverter, not enough in my opinion, but may be good for a couple of light bulbs. My inverter is a 1500 watt inverter, it costs more but it'll run more appliances with it.
The solar panel I'm using is only a 5 watt panel, which isn't much but seems to be enough to keep my batteries topped off and fully charged. Charging up a dead battery would be a different story. This is why I also keep a standard battery charger to charge up the batteries while I have my normal electricity still available.
Of course a higher wattage solar panel will give you more watts, but they are also more expensive.
I'm not that familiar with the Duracell unit, so I can't really review it.