Being lithium do the Winston batteries need a special charger?
From: Af [mailto:af-boun...@afmug.com] On Behalf Of Charles Regan Sent: Monday, October 31, 2016 6:35 PM To: af@afmug.com Subject: Re: [AFMUG] Tesla powerwall 2 We are using Meanwell TN3000, pure sine wave 3000W inverter charger. It has a solar plug too. Cost is 950$ Small sites has the 1500W version the the inverter and Winston 24v 60Ah lithium battery. On Oct 31, 2016 10:17 PM, "Adam Moffett" <dmmoff...@gmail.com> wrote: 60% DOD is pretty conservative. Do you lose power a lot? Losing power at this site is somewhat of a hypothetical event. A Mack truck on the highway wiped out 5 poles and we ran on propane for a whole day. The previous outage was years before, and I don't expect another one for a few more years. ...and ideally I'm only on battery for a minute or two while the genny gets started. This was my thinking as well.. With my AGM setups I’m not comfortable pushing beyond 60% DOD.. I’m also paying a lot for 10-year rated large Ah AGM batteries these days. Peter Kranz <http://www.unwiredltd.com/> www.UnwiredLtd.com Desk: 510-868-1614 x100 <tel:510-868-1614%20x100> Mobile: 510-207-0000 <mailto:pkr...@unwiredltd.com> pkr...@unwiredltd.com From: Af [mailto:af-boun...@afmug.com] On Behalf Of Mathew Howard Sent: Monday, October 31, 2016 2:33 PM To: af <mailto:af@afmug.com> <af@afmug.com> Subject: Re: [AFMUG] Tesla powerwall 2 Figuring those prices, you're not going to end up too far off from the price of the Tesla for the same run time. Tripling the batteries will put you up to somewhere around $4500, for basically the same kWh, but if you factor in being able to 100% discharge the Tesla setup, you're going to need to add a bunch more battery. I wonder how the life expectancy compares... On Mon, Oct 31, 2016 at 2:51 PM, Adam Moffett <dmmoff...@gmail.com> wrote: That's the same link I sent earlier, bro. $3049 is list price....you'll pay closer to $2500 - $2600. On 10/31/2016 3:47 PM, Chuck McCown wrote: This looks like it: http://www.aimscorp.net/12000-Watt-Inverter-Charger-48-volt-120-240vac.html � $3409/12000=28.4 cents per watt.� Not too bad considering there is a battery charger in there. � From: Adam Moffett Sent: Monday, October 31, 2016 1:01 PM To: af@afmug.com Subject: Re: [AFMUG] Tesla powerwall 2 � http://www.aimscorp.net/12000-Watt-Inverter-Charger-48-volt-120-240vac.html This has a street price of $2500.� The four SLA batteries were (I think) $160 each.� The 3/0 battery cable was not free, but I don't remember what it cost.� This is only 4800 Wh, but it's trivial to add more/bigger batteries.� This doesn't have any built in network monitoring though.....does the Powerwall? � On 10/31/2016 2:14 PM, Peter Kranz wrote: The new tesla powerwall 2 appears to be an interesting UPS option now that it has a build in inverter/charger. 14kWh for $5500, so would run most of my sites for about 24 hours. When I backed out the costs for 14kWh of our standard AGM cells and inverter, I think this price is quite reasonable. � https://www.tesla.com/powerwall � Peter Kranz www.UnwiredLtd.com <http://www.unwiredltd.com/> Desk: 510-868-1614 x100 <tel:510-868-1614%20x100> Mobile: 510-207-0000 pkr...@unwiredltd.com �
