Here in the US the last lead acid system I bought consisted of 4x 6V cells at 400AH each. Connected in series for a 24V system = 9600kWh It cost me $1300 at the time and since I lived close to the regional rep, he delivered the batteries to me no shipping cost. The batteries are made by Crown, which is a forklift company and they must have decided to integrate the lead acid battery production since so much of their product uses them.
Now in use, the capacity of the battery is in fact substantially less that 9600ah, because if you tried to use that capacity you would kill the battery pack in short order. They also weigh 460lb, which is why one cannot afford to ship lead acid batteries anywhere given the weight.
Now the first battery on the list, which was 9.6kWh @ 48V was only 220lb and is already inside a purpose built enclosure. You can probably cycle this battery down to 20% on a regular basis vs the 50-60% one would normally use with Lead Acid. The battery will charge in a much shorter time than a lead acid, assuming the
current source has the beef to do it (forget an automotive alternator). This is one of the biggest bears, in
winter when one has only a few hours of good sunlight the slow uptake of a lead acid very much limits what can be done with
solar and is going to increase the need to run the
generator. Because
solar panels can actually put out good
power in low temperatures and direct
winter sunlight.
If I do 2 of the Tesla modules, I get a battery pack that is more than double the effective capacity of the lead acid system that I had at approximately double the cost. NO
maintenance other than keeping track of its state of charge and keeping ambient temperature at an acceptable level so that it can accept a charge. I'm pretty sure it would FAR outlast the system I have now. As the cars get more numerous, the
price is likely to drop further. at 160lb, about 1/3 the weight of the lead acid system. The difference in weight is equivalent to another 42.8 gal of
fuel in the tank. With a very efficient
boat, that might be close to 400 miles of extra range.
Quote:
Originally Posted by Simi 60
No shipping to Australia, tis why I asked
Here that (owl) $4000 US battery bank would probably cost closer to the moon by the time shipping was added in
As a comparison, my 8x 220ah @ 12v AGM cost $2300usd delivered to the boat cockpit.
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