Thanks for all the input. I'm going to the client's house today and see what he's got.
On Wed, Dec 31, 2025 at 12:08 PM Starlight via RE-wrenches < [email protected]> wrote: > Hi Darryl, Quote: "When a cell in the battery reaches full charge the > circuit bypasses that cell” > > Not exactly. The BMS balance circuit reduces current (example 300ma) to > any cell that has reached the balance voltage setting (example 3.55v) while > other lower SoC cells in series continue charging. > > If a cell reaches the over voltage protection limit (about 3.8V for LFP), > the BMS will disable all current flow. All batteries in series with this > battery will stop charging due to the open circuit BMS. This can quickly > cause a series battery bank to become out of balance. A battery balancer > like Victron is very effective in preventing this. > > > > Larry Crutcher > Starlight Power Systems > > > > On Dec 31, 2025, at 11:30 AM, Darryl Thayer via RE-wrenches < > [email protected]> wrote: > > I hope I am responding correctly. Each battery has a built-in circuit > that is called a top balancer. When a cell in the battery reaches full > charge the circuit bypasses that cell with a top balance current making the > whole battery drop to that top balance current. any battery connected in > series with that battery is forced to that current, such that it will have > to charge at the top balance current of the first battery to go to top > balance current. best thing is to use a 48 volt lithium battery. If you > must use these batteries use a good battery balancer, Victron is the best > but still not as a 48 volt battery. > > On Wed, Dec 31, 2025 at 12:01 PM Jay via RE-wrenches < > [email protected]> wrote: > >> >> Hi jim >> >> As you have 4 battereis in series, you should use balancing devices >> between them. The kilovaukt are very susceptible to getting out of balance >> between batteries. >> >> I had to work with a customer to fix his kilovault battereis. Numerous >> failures which was traced back to broken balancers. >> >> Victron make good ones. >> >> Jay >> >> >> > On Dec 30, 2025, at 9:39 PM, Jim Gowdy via RE-wrenches < >> [email protected]> wrote: >> > >> > >> > Does anyone have any experience with the Kilovault 2400 HLX 12v >> batteries. I have a customer that wants to hook up a generator to his >> system and go over programming on an outback system. I looked up this >> battery company and they don't have a website and their phone number didn't >> work so I assume the company is out of business. I found a manual and the >> specs state that the bulk charge time is 2 minutes per battery I assume. >> I'm still a rookie and learning the proper charging parameters for >> different kinds of batteries so any help would be appreciated. He hasn't >> given me much info, but apparently there are...... >> > -8 batteries on a 48v system. I assume the batteries are 2 strings of >> 4 batteries. >> > >> > -Outback FXR 30/48 inverter >> > >> > -Outback FM Charge Controller. He didn't say what size, but the >> assumption is 80a >> > >> > -MATE 3 controller >> > >> > -Solar....not known at the moment >> > >> > -Gasoline powered 120v output portable generator.....KW is unknown at >> the moment. *I don't like this, but it's what the customer bought. >> > >> > >> > -- >> > Jim with Gowdy Electric >> > Cambria, Ca 93428 >> > business 805 927 2630 >> > cell 805 975 5279 >> > _______________________________________________ >> > List sponsored by Redwood Alliance >> > >> > Pay optional member dues here: http://re-wrenches.org >> > >> > List Address: [email protected] >> > >> > Change listserver email address & settings: >> > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> > >> > There are two list archives for searching. When one doesn't work, try >> the other: >> > https://www.mail-archive.com/[email protected]/ >> > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> > >> > List rules & etiquette: >> > http://www.re-wrenches.org/etiquette.htm >> > >> > Check out or update participant bios: >> > http://www.members.re-wrenches.org >> > >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> Pay optional member dues here: http://re-wrenches.org >> >> List Address: [email protected] >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> There are two list archives for searching. When one doesn't work, try the >> other: >> https://www.mail-archive.com/[email protected]/ >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> http://www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> http://www.members.re-wrenches.org >> >> _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/[email protected]/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org > > > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/[email protected]/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org > > -- Jim with Gowdy Electric Cambria, Ca 93428 business 805 927 2630 cell 805 975 5279
_______________________________________________ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org List Address: [email protected] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org There are two list archives for searching. When one doesn't work, try the other: https://www.mail-archive.com/[email protected]/ http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out or update participant bios: http://www.members.re-wrenches.org
