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Trev
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| Posted: 01 April 2010 at 9:32pm | IP Logged
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Bruce
Rego is cheaper. It is blue plated as LV1 (which is electric) and registered under the code of ‘electric, steam & something else’(can’t remember).
I have not paid an electricity bill since fitting the 2kw of solar. There is no other running cost apart from batteries wearing out.
Expected costing is back a few postings.
But here is another way to look at it.
Battery cost is $1.80/ah x 45 cells x 200ah = $16,200
$16,200 / 30,000km = $0.54 cents /km, but they are not dead yet. In fact as just tested, still performing very well.
I am still yet to see a petrol/deisel running cost which includes all services and spare parts charges.
Bruce, I have posted cyclone posting
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turbotrana
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| Posted: 18 May 2010 at 3:37pm | IP Logged
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Trev! Gordon! Anymore info on the LiPo cell equalizers. Price? Availability? ETA?
Who's excited, I am.
But more info required so that I can get my LiPo starter batteries made.
BTW I am thinking of using LifeBatt batteries that have a voltage of 3.3 and charge at 3.65. Will this work or will that .1 volt difference between Thundersky bats 3.2v be important.
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Trev
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| Posted: 18 May 2010 at 8:01pm | IP Logged
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Turbotrana,
I have just been veiwing the data that Gordon has recorded on the latest equalizer design. We have learned a lot about the behaviour of Lithium cells with Gordon's data logging. I am extremely grateful to Gordon for doing the testing and experiments with further improvements to the cell equalizers. Gordon has made more improvements than I have fingers (& I have not lost any fingers yet). This latest round of testing has shown good results.
Yes these cell equalizers will work on other lithium cell brands. May I ask why LifeBatt?? Thundersky are good.
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turbotrana
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| Posted: 18 May 2010 at 11:33pm | IP Logged
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Lifebatt because of battery size. Whilst 8 10ah 40123 will have a footprint of roughly 12cm x 16cm and have the power to start a car, a 40a/h Thundersky (which I believe is the smallest made) will be a little harder to fit in the proposed location.
Nevertheless Thundersky prismatic style is not out of the question as its a slightly easier battery to mount when it comes to welding up brackets, but a squeezy fit.
Availabilty is another issue as neither seem like a stocked item and have to be ordered but I will deal with this when I get the BMS decided.
I am hoping to have one of Gordons BMS on my Perth doorstep late August ready to go when I come back from holiday.
What do ya reckon . Possible
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Trev
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| Posted: 19 May 2010 at 7:59pm | IP Logged
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Turbotrana,
Ok I guess if footprint means everything, and yes 40ah is the smallest Thundersky cell.
Availability, I have stock of TS cells. I have been keeping stock for a while now.
Gordon's Relativities Equalizer, anything could be possible, but timing is Gordon's call.
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turbotrana
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| Posted: 20 May 2010 at 1:27am | IP Logged
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Thanks, can you PM your price for 4 or 5 40ah thundersky bats. Are these new or used.
Please keep me informed when this BMS becomes available.
Regards
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GWatPE
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Joined: 01 September 2006
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| Posted: 20 May 2010 at 7:21pm | IP Logged
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Hi Turbotrana,
I had said in my PM to you that the LiPo cell equalizers were prototypes, and not a commercial product. BTW 4 LiPo cells are a close drop in voltage wise for a 12V lead acid battery. A 40Ah @ 12V LiPo is a quite small battery.
Gordon.
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Trev
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| Posted: 20 May 2010 at 7:57pm | IP Logged
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Turbotrana,
Just sent you a PM. Please use my email for further corespondence.
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Trev @ http://www.thebackshed.com/basiclynatural/
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