|
Post by EVangelist on Dec 26, 2016 23:04:02 GMT 11
Strangely, it works out cheaper to buy a car with batteries, than a bank of four home storage units! The chemistry and management for home storage batteries should be different to those used in a car, since home storage is far more likely to be 100% deep cycled every single day, whereas that is less likely in a BEV. I've seen lots of detailed discussions on this topic in various fora, many people seem to think Tesla make great BEV batteries but not very good home storage batteries and LG is better for that. Since I'm not a battery chemist, I'm not an expert who can draw their own conclusion on this matter. The various positions are passionately held and robustly debated! It's possible that has changed with Tesla Powerwall 2 - they seem to have made great strides there. Anyways... a BEV battery might get killed fairly quickly using it as a home battery.
|
|
|
Post by Phoebe on Dec 27, 2016 1:27:03 GMT 11
My LG Home Storage battery doesn't like the extreme heat we're having at the moment any more than my LEAF battery does. It started flashing red lights all over the place and sent me a warning email. I had to turn the whole system off, and run off the grid, until it cooled down.
|
|
aja
EV Enthusiast
Posts: 34
LEAF OWNER?: Yes
|
Post by aja on Dec 27, 2016 21:38:33 GMT 11
Wow Phoebe, that sounds extreme! What was the temperature in the area the batteries are located?
|
|
|
Post by Phoebe on Dec 27, 2016 22:16:13 GMT 11
The general air temperature was in the mid 30s but the battery sits behind my garage rolladoor, which is metal and faces west catching the afternoon sun. The warning email came through 5.48 pm. I had been running a large split system air con all day, and had been drawing 1KW from the battery a lot of the time. I couldn't tell you the temperature of the battery at the time because everything shut down so I couldn't read it. Today with air temp about the same, I didn't turn the air con on, I got a NE breeze to blow through the garage and the battery temp reached 36C this afternoon, but it seemed to cope with that. I imagine the battery temp got up to about 40C the day it packed it in. My SOH still reads 100% so I seem to have avoided doing any real damage so far.
|
|
|
Post by markrmarkr on Dec 28, 2016 0:07:54 GMT 11
One thing - make sure the guys at the service centre know they must charge the car to 100%, and leave enough time so that they can do it. You may need to plug it in when you get to the service centre, and ring them up to make sure they are charging it well before you pick it up.
When I first got my Leaf they would charge it to 100% as part of the service, but now it's more hit or miss.
|
|
aja
EV Enthusiast
Posts: 34
LEAF OWNER?: Yes
|
Post by aja on Dec 28, 2016 10:09:43 GMT 11
Thanks for the tip Markrmarkr. I spoke with the service manager at Rex Gorell in Geelong and he told me the same thing. We are not due for a service until April next year. Before then we will scout the most efficient route in our ice car.
|
|
|
Post by 4wardthinking on Dec 29, 2016 9:38:38 GMT 11
Strangely, it works out cheaper to buy a car with batteries, than a bank of four home storage units! The chemistry and management for home storage batteries should be different to those used in a car, since home storage is far more likely to be 100% deep cycled every single day, whereas that is less likely in a BEV. I've seen lots of detailed discussions on this topic in various fora, many people seem to think Tesla make great BEV batteries but not very good home storage batteries and LG is better for that. Since I'm not a battery chemist, I'm not an expert who can draw their own conclusion on this matter. The various positions are passionately held and robustly debated! It's possible that has changed with Tesla Powerwall 2 - they seem to have made great strides there. Anyways... a BEV battery might get killed fairly quickly using it as a home battery. It's really down to depth of discharge. A coulomb is a coulomb, wherever it comes from. Certain batteries are better than others, but any battery has the same problem, that being balance. There are so many opinions on the net, I'm tending to view them as just that. Opinions about when a LiION cell is beyond any use is questionable, I have number revived from the pile, and in use, but unless they/any are extremely close on actual property, I resist putting them into a battery that is anything more than low to medium drain. Now bear in mind how much the EV battery has to take, it copes very well. Balance is the key to any chemistry of cell. TESLA walls are managed differently, and the need!! For it to be connected to them is not the best move really. I always view any stats from manufacturers with trepidation, take for instance the 18650's with 4000+mAh. It would be nice to have all testing as standard throughout the world, alas it it not, and none of them have been out in use long enough to be certain. It is however looking like LG are serious about their product, if find it comforting to have a more clearly defined warranty, and a fix beyond just dumping them and a new item, which in some places, Nissan appear to have stepped up to. Up to press, there is very few products capable of evaluating a cell, I know of one at present. Establish a thorough way to test them, then cobbling a battery together to store power will be far easier, and fewer batteries with good cells included will be discarded. A good way would be to add ones own cells to a storage 'frame' as one deems fit. A bit like adding memory to a PC. Price dictated to enthuse the populous further has to be evaluated further.
|
|
|
Post by dac1811 on Mar 21, 2017 20:18:07 GMT 11
Hi everyone, I have just bought my new red Leaf. This was the last "new" one from Steve Jarvin's at Burwood. Even though I've seen a few claims on this forum of the "very last new sale", I think I might have that title, at least for now. After a minor hiccup getting Carwings and the App working, the car is great and I am looking forward to plenty of super quiet and fun commuting.
|
|
aja
EV Enthusiast
Posts: 34
LEAF OWNER?: Yes
|
Post by aja on Mar 21, 2017 20:52:49 GMT 11
Congratulations and welcome to the future! We've had our Leaf a couple of months now and never looked back.
|
|
|
Post by jeffjl on Mar 22, 2017 16:59:08 GMT 11
Hi everyone, I have just bought my new red Leaf. This was the last "new" one from Steve Jarvin's at Burwood. Even though I've seen a few claims on this forum of the "very last new sale", I think I might have that title, at least for now. After a minor hiccup getting Carwings and the App working, the car is great and I am looking forward to plenty of super quiet and fun commuting. Welcome. Catch you in a few weeks after you have gone through all the old threads.
|
|
|
Post by alison on Mar 27, 2017 20:14:05 GMT 11
Hi everyone, I have just bought my new red Leaf. This was the last "new" one from Steve Jarvin's at Burwood. Even though I've seen a few claims on this forum of the "very last new sale", I think I might have that title, at least for now. After a minor hiccup getting Carwings and the App working, the car is great and I am looking forward to plenty of super quiet and fun commuting. Great! I was eyeing that one off too, congrats and I'm sure you will enjoy it.
|
|