Re: [RE-wrenches] LiFePo4 Low Temp Charging Damage

2021-05-21 Thread Dave Angelini Offgrid Solar
I can think of a few other things for the wish list! l Closed loop charging with multiple sources. Robust BMS design to not be a new source of power failures Offgrid. Spare BMS for sale with product that is servicable. Gets Soc and temp into Insight and Optics A company that will be there when I

[RE-wrenches] LG chem resu10h gen2

2021-05-21 Thread Kristopher Schmid
I have installed a number of battery ready systems using StorEdge inverters without the battery. I now am left hanging with no gen 2 batteries available and no compatibility between gen 3 prime batteries and the StorEdge. Not happy. Anyone have a LG gen 2 on the shelf (a very strong shelf).

Re: [RE-wrenches] SMA SB 2500U

2021-05-21 Thread Glenn Burt
IEEE standards are not UL standards, and some of the mentioned improvements in functionality are NEC requirements, not UL. Just trying to clarify. From: RE-wrenches On Behalf Of Kirk Herander, VSE Sent: Tuesday, May 18, 2021 7:04 PM To: re-wrenches@lists.re-wrenches.org Subject: Re:

Re: [RE-wrenches] LiFePo4 Low Temp Charging Damage

2021-05-21 Thread Ray
This is the only company I know of that has dealt with the low temperature charging issue.  Its a great product, and the blue tooth monitoring is an excellent feature too.  This is what the other Li+ batteries should be doing.  The big down side is they are currently limited to 12v.  Wish they

Re: [RE-wrenches] LiFePo4 Low Temp Charging Damage

2021-05-21 Thread Larry
My personal opinion is that you should not buy any lithium battery that does not provide adequate protection for all modes of operation. Freezing does not damage the battery; charging a frozen battery may damage it quickly. Trickle charging the battery is not the solution. There are two

Re: [RE-wrenches] LiFePo4 Low Temp Charging Damage

2021-05-21 Thread Dave Angelini Offgrid Solar
I doubt you will do any good with trickle charging at cold temps. LFP is too efficient and there is litlle self heating, so this will not work. Probably need to use LA or roll the dice. An expensive mistake if you lose. Even heating pads need a fossile fuel source in cold country with LFP

[RE-wrenches] LiFePo4 Low Temp Charging Damage

2021-05-21 Thread Mark Frye
Folks, If I have a charger that does not have low battery charge cut-off, I can get in trouble if I have a frozen pack and apply a charging voltage. But, if I start with a pack that is above freezing and keep a trickle charge on it, can I keep that pack safe from freezing and damage? Or at

Re: [RE-wrenches] SHW?

2021-05-21 Thread Will White
Chris, I just saw Heliodyne just came out with a new controller that includes remote monitoring. I don't know anything about it but you may want to check it out. Thanks, Will On Thu, May 20, 2021 at 1:12 PM Christopher Warfel < cwar...@entech-engineering.com> wrote: > We install pv and SHW. It