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I received 20 of the LF280K from Docan Jan/2022 and built them into 5 batteries in parallel. The max charge / discharge rate has never been above 60amps per battery and normally is ~ 30amps. I have used them in my RV for those 2 years ~ 35k miles where they have occasionally been in some rough...

The wire is only 4 inches long so it handles much more than 80 amps. As was indicated in the linked post this entire battery configuration was tested at 150amps while obtaining temperature readings on the wires and terminals with MINIMAL rise of cell interconnect wire temperatures using 4ga...

That really wasn't the point of my post. The point of my post was that cell interconnect testing was done at max BMS capacity using 4ga wire which is highly flexible.

I have put over 10,000 hi-way and off-pavement miles on this configuration. It works without issue. https://diysolarforum.com/threads/improving-contact-area-on-welded-stud-pads.26869/page-11#post-435521

Thank you for the reply, After getting the 1st unit to work following the directions the 3 additional ones would never work.

FYI, I'm way over my head here from a software RS-485 perspective. I have a large 12V based Victron system in my Class B RV which has 5 DIY 280K batteries in parallel using 1 JDB BMS for each battery. This summer a friend tried to help me add the 280K via the USB to RS485 adapter and update the...

Thank you, I would love to know if someone verifies it with IOS as well.

Thank you. Does the front page of the app show amp / power draw for each device? - I have five batteries in parallel so being able to have a single view of the amp draw between all of the batteries at the same time would be helpful to track differences in resistance of cabling or battery...

I agree, there are a few (maybe 3) places in the app where you can define a name. I have not taken the time to figure out which one does what. PIN - I read in another thread it’s the Bluetooth module the performs the security and that one has not been sold for a few years. So the pin code is...

The issue for me is the pin number is only written in the IOS app it’s not on the BMS device itself so anyone walking near your RV in my example would be able to see the BMS go into the BMS and if they had an app that could make changes to the BMS they would be able to do so. If you would like...

Removed reply to keep thread on original topic.

The ones you posted do offer an advantage in the case of an accidental short is there will be less of a chance of ruining the threads. I think the pros for the 280K is there is a shorter overall height which allow them to fit into those Basen cases while also allowing my to use nylon lock nuts...

I have a 1400ah 12V Victron system in my Class B RV. I thought long and hard about 48V and 24V but ultimately listened to what all the Victron dealers were recommending. "You run a 12V system in your van, you have a powerful 12V charging source in your alternator, 12V is easy to work on and get...

Im confused, did you check out the link of the original testers post? I believe we are talking about the same batteries that have been posted several times in this thread. Here is a picture to clarify what the 280K cells look like.

Myself and another poster have tested the welded studs at 150 and 200amps respectively and there was NO issues. Here is the link to my post responding the the original tester - https://diysolarforum.com/threads/2948-for-32-280ah-new-lifepo4.20339/page-8#post-433381 The image above is 1 of 5...

UPDATE I received the shipment from Basen that was managed by Alex Chen who i found monitors this forum as "Alex0731" because he reached out to me directly after reading my criticism of "poor communication" while never mentioning the obvious misleading advertisement which was the basis of this...

Thank you for your research and sharing your results with this community. Based upon the information you provided i purchased 16 cells and have assembled and tested these in the Basen cases with a JDB-150a BMS. Using 4ga welding cable for cell interconnects, dual 4ga for BMS connection and...

Thanks for the reply - i posted a better explanation above. Out of 16 cells I had 1 runner that hit 3.65 while the others in that 12v pac were at 3.3 and 3.4 - Thats why i am breaking the 12v packs down and then going to regroup them by fully charged / top balanced / rested voltage values.

Yep i separated for the to settle individually. Then i will group them by the settled voltage and configure to 12v batteries

Good conversation here. I took the 16 raw cells and built into 4 12v pacs with JDB BMS and charged till i hit a high voltage disconnect at 3.6. I then removed the BMS and reconfigured the busbars into a 4 cell parallel 3.2V configuration and top balanced those 4 cells with a power supply to...

Hello i have built several 12V LIFEPO4 batteries in the past but in this instance in have 16 of the new 280K cells which have all completed the top balancing process. As their voltage varies at such a high state of charge i wanted to ask how long i should let them rest before matching them into...

This is a great question. I have Basen sealed cases for my 280ah builds with a 150a JDB BMS inside of it and then took temps of the cabling and later field tested with 120+ amp charge rates (I posted about some of this previously). For you question specifically if you are using a 150amp BMS...

Wow, this is out of the box! (pun intended). I will certainly consider this as if i can reduce the range and have the ability to turn it off in rare circumstances this would totally work for me. Thank you!

Thank you. I do have extras!

Thanks for the comments and ideas. These batteries will be in the Basen plastic cases (@$100ea) and at this point i do not want to drill holes in the cases and use glands to run the wires through for on/off bluetooth switching or remote serial access. In an attempt to mitigate the lack of...

Thank you. I may end up doing this if i cant find a way to reduce the bluetooth range to only close or inside my van.

Hello - I have ordered 3 of these pads and wanted to ask if you have any updates on your install. Thank you, Danny

I have a WB / Travato and have been using this since Jan/2020. I put a remote switch on override it to get longer charge cycles when its cold and driving down the interstate. While this works as described as my bank has grown 1200+ ah i now keep close tabs on it as just a 90% SOC from the 1200ah...

When i travel i to RV events or areas where other RV's are camping I see other BMS bluetooth units in my app. I have never tried to access them but as there is nothing prompting me to login to mine i am concerned someone could get access and change the configuration.

Hello, I'm sorry if this has been asked before but was not having any luck via the search terms i was using - I wanted to ask how others are securing their JDB BMS when using bluetooth. I will have 5 of these in a Class-B RV (van) and often times its important / convenient to access these but i...

As i mentioned i used dual 4ga. As you have purchased the "Y" cables why not give them a try at 150amps and report back to us. Also it would be helpful to describe you build - like if its in a tight closed environment of more of a free air environment.

Nope - Im based out of Texas.

Thank you, I didnt post a build thread here but have posted several of the "mods" to a Winnebago Travato specific groups. Really i prefer to show people in person at meet ups so we can hav e a more in depth conversations. Im happy to answer questions you may have and can start another thread...

I have the exact same setup with welded studs (LF280K) and have tested with #1ga and #4ga welding cable. My testing was done at 140a in a closed Basen plastic case. The short #4ga cell interconnects got to mid 80 degree F temps but the longer single #4 run from both main negative > bms and neg...

During my screw in stud repair I used the products recommended in another users youtube video. 1000 grit sandpaper on the round "puc like pad" along with Deoxit. Again beating a dead horse here - way more time, cost and unpredictable behavior vs. my weld on studs so i am waiting patiently for...