Re: [RE-wrenches] Older iCel System Lithium Ion Batteries

That's why Allan and I only recommend this if a knowledgeable tech is there to monitor it.  It should only take a few minutes to either see the batteries are just not going to wake up, or for regular charging to take over.   This is basically CPR for the batteries.  You don't ever do it

Re: [RE-wrenches] Older iCel System Lithium Ion Batteries

Is there not a concern that if the batteries are showing such low voltage that they will not accept current, and the voltage will rise to module voltage and put array voltage on the output of the charge controller? On Sat, Feb 10, 2018 at 12:24 PM, Ray wrote: > Allan has a

Re: [RE-wrenches] experience with the Tesla Powerwall

Tesla also promises an offgrid version soon that will be DC coupled. The price is not bad for 13 KWH right now. The system is 50 vdc which to me is usable as it stands. All of the 400vdc batteries are not conceived right in my humble opinion! Not to mention for safety in my home! Dave Angelini

[RE-wrenches] experience with the Tesla Powerwall

*Aloha Wrenches,* *I thought I'd share my own experiences with the Powerwall as my company is now launching a program to add PW to existing NEM systems since the vast majority of them do not have storage which means that if the grid goes down, so does their PV system. (With the exception of the

Re: [RE-wrenches] Older iCel System Lithium Ion Batteries (Steve Higgins)

Some of my non-solar consulting involves test engineering for lithium ion materials development. I'm no expert but I do get to work with folks developing and testing cells and sit in on industry training and conferences now and then. I would discourage trying the jump start described here

Re: [RE-wrenches] Older iCel System Lithium Ion Batteries

That's probably what I would try also... but be really careful with Li, there may be an issue with the BMS already, doing this could cause thermal runaway... I would probably do so away from any structures, and I would be using an thermal camera to monitor for hot spots. I've done this with Li Po

Re: [RE-wrenches] 1/2 HP well pump soft start at 120 VAC

If its an old pump, you don’t say then all sorts of bad things are possible as parts wear out, all that. And it could also be your inverter which is probably getting pretty old as well. I’m starting to see the old SW’s fail and have all sorts of weird problems. my 2 cents. jay > On Feb

Re: [RE-wrenches] Older iCel System Lithium Ion Batteries

Gary, I keep 24v and 48 v IOTA chargers with jumper cables attached for those times when systems are dead. Just a minute or so plugged into my Honda 2000I or generator on bypass gets everything lit up and running. Just did one yesterday. Got Kohler running but Mate 3 and inverter would not

Re: [RE-wrenches] Auger for ground mount

I don't have that option, there isn't one available. I've been advised a two person commercial grade gas driven auger will do it. On Fri, Feb 9, 2018 at 11:56 PM, Darryl Thayer wrote: > The last job I used a mini excavator with auger drive head and put in > ground screws

Re: [RE-wrenches] Older iCel System Lithium Ion Batteries

Gary, you might try an old-fashioned approach: bypass the controller to send the array straight to the batteries until threshold voltage is reached. More specifically, bypass one of the controllers; assuming 48, 60 or 72 Vnom depending on array. Let the other controller remain in normal