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As I mentioned earlier, I used the SOC/BMK to control the charger but ran into a problem due to the SOC being inaccurate. While charging an EV overnight and expecting the charging to start at 30% the system completely shut down, both the inverter, then the bms's on 3 280kw 48v systems. Quite a...

Looking for this convenient feature. It's on my 2 diy setups and it's very convenient. Was hoping to find a rack mounted battery that had this feature. Any help would be appreciated.

I've also been using this to monitor 2 midnites for several years. I'm really happy with all aspects of them except the outdated communications capabilities. Since they are still available and cost about the same or less than the Victron units, along with the fact that I'm also familiar with...

Keith, at my age I need a last name to place you. Why not send me a Facebook friend request and we can chat there. Phil

Worked in Gretna and lived on West Bank for many years! Very familiar with Terrytown.

Thanks for the feedback. I'm also using their 100a 48v BMS on a 16s string and it works fine. Thought I'd step up the capacity a bit on my new 16s string so I picked this unit. What I can't get is an actual layout of the sensing leads from them for this unit. The manual is totally incomplete and...

I just bought a JBD 250A BMS, model SP22S001 20S 250A, Will use it in a 16S configuration with 280ah cells. As usual, the manual is 'difficult' to work with. Question is: I can not find any information about this unit posted by members and would like to get some feedback if anyone has used it...

Thanks much. I’ll take a look at it also.

Thanks, I’ll take a look at it. I’m using midnite solar units now and they work great but no Bluetooth or decent remote communications

I have a need for an MPPT charge controller that will handle over 100v with 40 amp output. 48v lifep04 batteries. Victron recommends the 150/45 controller. Does anyone know of any decent lower cost alternatives? Thanks in advance... Update: November 2022 I bought a used 250v Midnite Solar...

Suggestion: Will, how about doing reviews on riding mower batteries design, capacity, and ability to 'service' by the DIY folks. Something different? Lots of new equipment coming out and batteries are a major cost component. Thanks

Thanks for the update. This is my setup with new batteries in the yellow top box. Think they all look similar! Old batteries awaiting disposal. Getting close to placing an order for second string of Lithium batteries. After that , hopefully, a new EV to charge! lol... Next time you have the...

Curious as to what the 'standard' lithium settings are from Magnum. Would you mind posting them? Thanks. As as of now, after working with different settings for a bit, I've settled on Abs and Eq at 55.2 and Float at 53.6. On the charger, the BMK/SOC controls starting to charge at 40% and stops...

Great input, thank you. I'm going to re-think several of my settings and observe how the system reacts. What has become clearer to me is that there is not one configuration that fits all applications. We can go for keeping bats at a high charge level if our application needs it or be more...

Thanks for feedback. Been away for a few days so slow in getting back. On your rebulk, why would you set it this low? The only thing I thought about was to avoid conflict with a solar charge controller that might be the primary rebulk source that was set at a higher voltage. Based on your input...

Had seen the video. It's a good one, thanks for posting it. Agree that the BMK will be helpful/required. I have not reviewed the tech info for ARC 2.2 so can't offer any worthwhile suggestions. I have BMK installed. It's ver 1.0 but seems to work fine. Use the 'custom' setup with current lead...

-No gen so ok there -Good point on absorb will up it a bit until I get adequate charge -Will set rebulk at 53.6 to start -forgot about the temp compensation. good point. -good point, low temp probably won't be an issue where i'm located. but if needed i'll just turn off charger. also, bms has...

My ME-ARC remote control is version 3..01. I talked to Magnum support about upgrading to a Lithium profile since I'm about ready to replace the batteries with 280ah EVE cells. They did not suggest an upgrade to the remote control. However they did recommend charger settings for the LiFePO4...

Thanks much! About to get my configuration sorted out.

Just bought the Victron 48/1200 and have been searching quite a while trying to find out the description of one of their parameters. On the settings page, it's called the 'Charge Detect' but I can't find out what it actually means and am a bit concerned since it's an adjustable setting. Do any...

I am very interested in getting one of these units but there is one item on the datasheet that concerns me. The input frequency can be 45-65Hz, which is ok. However the output frequency at 230v is listed as 50Hz, not the usual 60Hz needed in US. I did not see a multiplus with a 60Hz output...

Thank you Steve I've watched other post and always appreciated the comments you've offered up. You've helped us all grow in this forum. Will put you in my prayers.

Thanks Steve, I think what you said is that based on your tests and observations that I should be ok with the 160/280 parallel but not a good idea to expand further? Appreciate you sharing your experience.

Great input from everyone, thanks much. I would also like to see the test outlined above done by someone. If anyone does do it or hear about one being done, please post here.

I am considering paralleling a 160ah with a 280ah (12v each) and adding a bms to each battery also. Have you experienced any problems or know of any reason this won't work? thanks.

Sorry if i'm off topic here but you raised a question for me. I have a midnite solar charge controller with their shunt installed. could i use it for the chargery as well? anything special required to calibrate it that anyone knows of? thanks

It was looking like a good one until I looked at specs. can't take the risk. However, great to have folks searching. Hopefully some good ones at a reasonable price will turn up as time goes by. We need to figure out how to help support and encourage Steve at Overkill to get a 48v configured with...

Thanks, I got it working. Don't have the smart BP but will use a program that is similar.

If you wired your BP to a relay without using a BMS i would like to see your schematic. I tried to get my BP 65 to work control a relay today without success. Thanks..

https://www.ebay.com/itm/Copper-Flat-Bar-Stock-3-16-x-1-x-6-Knife-making-hobby-craft-C110-1-Bar/111816286005?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649 I could not find busbars to fit my application ordered bar from these folks. Great quality but i had to drill the holes. Have...

Thanks much for all the input. I've never used a relay setup like this so am completely ignorant. Question: Would this configuration work if PV voltage is around 135 and battery system is 48v or would we need different relays? Thanks.

My readings change some also. Interestingly the cells at 002 stay the same and the other 2 cells vary somewhat, however, not much.

I have 4 cells: The IR readings using the 5 in 1 cell meter that Will used in one of his videos are: 010,002,002,007. My question is: Based on these readings are these 'normal' or are there any areas of concern that I need to watch? Did some research but could not find information or I just...

Thanks Steve, this complicates my decision process even more but really good information. If you had to make a decision today on a charge controller for a 1000w solar panel layout to support the Lifepo4 batteries which one would you choose. I'm willing to get a new one and 'mothball' the midnite...

BMS discussions are making my head hurt(lol) and I have the same concerns with sub-standard hardware and sketchy product information. Think my approach is just going to use my high quality charge controller(midnite solar that also has temp control) to control input voltages, add a cell balancer...