Gerald_db Posted June 22, 2016 Share Posted June 22, 2016 Has anyone done or is there a link to a cost analysis of batteries available in South Africa based on a Rand/kWh/cycle basis as per this example I found on a European website? Watt it all comes down to. Quote Link to comment Share on other sites More sharing options...
___ Posted June 22, 2016 Share Posted June 22, 2016 Here is something I came up with just now. https://docs.google.com/spreadsheets/d/1jZ3hbwL2CUQBtpkPto-6Srh5Y4eEYLpAmlSLDGcR5A4/edit?usp=sharing Quote Link to comment Share on other sites More sharing options...
Guest Posted June 22, 2016 Share Posted June 22, 2016 FWIW. T105RE's are at the most, today, R2600 each. Quote Link to comment Share on other sites More sharing options...
SilverNodashi Posted June 28, 2016 Share Posted June 28, 2016 The biggest problem with this is twofold: 1) Prices are generally tied to Rand/Dollar exchange and price on demand so it fluctuates a lot. And most suppliers have different levels of markup. Ideally this should be done with dealer pricing, or a set margin of say 10% to get an accurate table of costs. Quote Link to comment Share on other sites More sharing options...
Gerald_db Posted June 28, 2016 Author Share Posted June 28, 2016 Going to go with 2 x 8 x T105RE's. Most cost effective and cycled to 25% DoD should give me 10 years and hopefully by then new technology has killed the price of storage. Other option is 8 x T105RE's and just to kill them in 4 years or so and hope the lithium's have plunged by then. Sent from my SM-G920F using Tapatalk Quote Link to comment Share on other sites More sharing options...
Guest Posted June 28, 2016 Share Posted June 28, 2016 FWIW. T105RE's are at the most, today, R2600 each. What size ? Sent from my SM-G920F using Tapatalk Quote Link to comment Share on other sites More sharing options...
Guest Posted June 28, 2016 Share Posted June 28, 2016 1 hour ago, Manie said: What size ? 6v 225ah - 1600 cycles to 50% DOD. Quote Link to comment Share on other sites More sharing options...
Guest Posted June 28, 2016 Share Posted June 28, 2016 Thanks Jaco Sent from my SM-G920F using Tapatalk Quote Link to comment Share on other sites More sharing options...
Gerald_db Posted June 28, 2016 Author Share Posted June 28, 2016 @Manie. To use 1 bank of 48v and cycle hard and hope that there is a cost effective 20 year new generation battery in 3 or 4 years when they are tired or 2 x 48v strings that could ne good for 10 years or more is the decision to be made. Sent from my SM-G920F using Tapatalk Quote Link to comment Share on other sites More sharing options...
Guest Posted June 28, 2016 Share Posted June 28, 2016 9 minutes ago, Gerald_db said: ... cost effective 20 year new generation battery in 3 or 4 years ... My gut feel says 10-20 years, measuring against me saying same 5 years back. Quote Link to comment Share on other sites More sharing options...
edmundp Posted June 28, 2016 Share Posted June 28, 2016 My gut feel says 10-20 years, measuring against me saying same 5 years back. I also simply do not see this happening. The "man" has too many vested interests in this not happening. [emoji85] [emoji86] [emoji87] Sent from my SM-N900 using Tapatalk ___ 1 Quote Link to comment Share on other sites More sharing options...
Guest Posted June 28, 2016 Share Posted June 28, 2016 @Manie. To use 1 bank of 48v and cycle hard and hope that there is a cost effective 20 year new generation battery in 3 or 4 years when they are tired or 2 x 48v strings that could ne good for 10 years or more is the decision to be made. Sent from my SM-G920F using Tapatalk Hi Gerald did you have a look at the lead crystals. I know it is expensive but you can get alot more cycles out of the batteries and its very save. You can cycle it alot deeper that other batteries. I see at pv out that extra pannels makes a huge difference. Well done. What type/makes batteries do you have? Sent from my SM-G920F using Tapatalk Quote Link to comment Share on other sites More sharing options...
Guest Posted June 29, 2016 Share Posted June 29, 2016 @Gerald_db lead crystals 20% dod = 6528 cycles and on 40% dod = 3672 cycles Sent from my SM-G920F using Tapatalk Quote Link to comment Share on other sites More sharing options...
___ Posted June 29, 2016 Share Posted June 29, 2016 On that Google sheet I posted there's a cnj 200 which is lead crystal. They make sense if you can get them below 7k a piece. Sent from my GT-I9195 using Tapatalk Quote Link to comment Share on other sites More sharing options...
Guest Posted June 29, 2016 Share Posted June 29, 2016 See the 150ah 12 volt is going for R6900 Sent from my SM-G920F using Tapatalk Quote Link to comment Share on other sites More sharing options...
Mike Posted June 29, 2016 Share Posted June 29, 2016 I can get 12v 200ah lead crystals at around R6200excl ex Cape Town Quote Link to comment Share on other sites More sharing options...
Guest Posted June 29, 2016 Share Posted June 29, 2016 I can get 12v 200ah lead crystals at around R6200excl ex Cape Town Awesome price . Deltec? Sent from my SM-G920F using Tapatalk Quote Link to comment Share on other sites More sharing options...
Mike Posted June 29, 2016 Share Posted June 29, 2016 one of them yep Quote Link to comment Share on other sites More sharing options...
___ Posted June 29, 2016 Share Posted June 29, 2016 13 hours ago, Manie said: Deltec Careful. Cycle life on the Deltec is much lower than on the Betta Battery. Consult with the spec sheets. I may be wrong, but the last time I checked the Deltecs were somewhat disappointing, hardly doing much better than our benchmark Trojan :-) Quote Link to comment Share on other sites More sharing options...
Guest Posted June 29, 2016 Share Posted June 29, 2016 If i looked at at the specs. Seems Deltec is the better one Sent from my SM-G920F using Tapatalk Quote Link to comment Share on other sites More sharing options...
Carl Posted June 30, 2016 Share Posted June 30, 2016 "Deltec" Energy Solutions is one of the suppliers of Lead Crystal batteries in Cape Town. Quote Link to comment Share on other sites More sharing options...
___ Posted June 30, 2016 Share Posted June 30, 2016 9 hours ago, Manie said: Seems Deltec is the better one What numbers are you seeing? It's quite likely that I have the wrong end of the stick, this is just what I remember. I saw the price and cheered up, then I saw the cycle life and lost all that cheer. Let me see if I can find it again. <insert Saxopohone music here> Here we go... http://www.battery-pmp.co.za/Deltec-Lead-Crystal-Batteries.pdf Page 5, second chart on the left. Around 1600 cycles to 50%. Same as Trojan T105RE. <Insert more Kenny G here> http://www.solarsolved.co.za/datasheets/batteries/Deltec/Lead_Crystal_6_CNFJ_200.pdf Page 2, second chart down on the right. Around 3200 cycles to 50%. That's double. If there is another spec sheet I should see, please send it to me. The above two are the reason I dismissed the Deltec as a possible option. Quote Link to comment Share on other sites More sharing options...
___ Posted June 30, 2016 Share Posted June 30, 2016 So basically, if you can get me 3000 cycles at less than 7k, the math is as follows: 12*200*0.5*3000 = 3600 kwh over lifetime 7000/3600 = Less than R2 a kwh (without even doing the math)... If it can only do half that cycle life, then price is over R3 per kwh and lead acid wins. :-) Quote Link to comment Share on other sites More sharing options...
CasualCheetah Posted June 30, 2016 Share Posted June 30, 2016 Deltec is an official distributor of Lead Crystal batteries in South Africa. Instead of having a Betta Batteries label, they are re-branded to display Deltec's logo as they are an official supplier. Deltec's data sheet is however incorrect if I am not mistaken (they have been notified). Rather get your data sheets from the Lead Crystal website. You will also see Deltec's details under the Africa distribution link. http://leadcrystalbatteries.com/distribution/distributors-in-africa/ ___ 1 Quote Link to comment Share on other sites More sharing options...
___ Posted June 30, 2016 Share Posted June 30, 2016 That is awesome news. It changes the picture completely. Thanks for the info! Sent from my GT-I9195 using Tapatalk Quote Link to comment Share on other sites More sharing options...
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