On 5/19/19 6:01 PM, Kirk Wallace wrote:
> There are a lot of surplus Leaf batteries available. My opinion on > these is that these were removed for warranty replacement due to > overheating. These are air cooled and don't do well if they are rapid > charged more than once during long trips. I am tending to avoid these. I saw those Nissan Leaf batteries as related eBay links. The price per energy storage looked very good. I assumed these were some sort of warranty replacement batteries, but didn't search to learn the reason these are on the surplus market. I vaguely recall hearing of technical problems with the Nissan Leaf. If the problem was overheating when fast charging or discharging in a car, that wouldn't deter me from using them in an off-the-grid home. It probably wouldn't be an issue in a properly sized system, and the Nissan batteries could easily be mounted vertically with air gaps and even inexpensive heat sinks could be used to accentuate cooling. I'd need to research the cell balancing and battery management as that's critical. A lot of those electronics are built into the Tesla battery packs which sounds good, but it's proprietary so using them in a home requires the batteries to be fooled into thinking they're in a car. An entrepreneur makes a device to do that. Jack Rickard of EVTV. http://store.evtv.me/proddetail.php?prod=1FullpackController I sent links earlier in this thread to a friend who used a Tesla battery for his off-the-grid home, and he displays battery life in odometer miles. I think he largely does this for a lark and he displays more conventional units as well, but keeping it in terms of miles, even though not applicable to a house, does provide a battery life indication that compares well to the original automotive use. No doubt he'll get more "miles" from his off the grid batteries than they'd get in a car where they're typically charged and discharged at a faster rate. Part 3 of the series, where the custom battery monitoring is demonstrated: https://www.youtube.com/watch?v=AIY2EWke-AA On 5/19/19 6:07 PM, andy pugh wrote: > (And, while we are at it, kWh is a horrible unit. What is wrong with MJ? ) Kilowatt hours is easier for me to convert into miles. :-) An American arguing with an Englishman over the metric system is funny. You guys invented this crummy system. Just because you were smart enough to switch to the metric system and we're still stuck on stupid is no call for being cheeky. :-P _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
