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  1. S

    Free BYD 24 Volt Battery , Hilton Head, SC

    Free BYD battery
  2. S

    Victron 'Smart' Solar MPPT's / Manual on/off

    Download the manual for your mppt from Victron energy web site and in section 13.12 it tells you how to do a on/off switch. Larger mppts have a built in on/off switch. I use my cerbo to control my mppt remote on/off ,thru the VRM system but that is thru the internet.
  3. S

    1,000,000 posts on the forum!

    I remember when you started the forum around Sept 20 2019, I joined on Sept 24, 2019. I have learned alot and now have a great Victron system. Thanks for all the help from you and the other forum members.
  4. S

    Urgent - JK BMS went Offline in the middle of the night - SOC Stuck but still discharging ???

    The more connectors you have, the more problem points you have, that is why most people use their busbars. Look in the Resources of this site for a good way to top balance.
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    Urgent - JK BMS went Offline in the middle of the night - SOC Stuck but still discharging ???

    I have three jk bms and have never had any problems with them but I top balanced my cell before putting them in service, as some one suggested moving the bms and see it the problem followes the bms or stays with the battery. Best of luck, maybe someone has a better idea.
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    Urgent - JK BMS went Offline in the middle of the night - SOC Stuck but still discharging ???

    Did any of the cells go below the under voltage protection you hav set at 2.80v during the night when the battery went offline?The SOC is not very accurate in the jk bms. It is better to use a shunt ( I use a victron smart shunt ) You may need to do a top balance to get the cells all at the same...
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    Urgent - JK BMS went Offline in the middle of the night - SOC Stuck but still discharging ???

    Now that the sun is higher in the sky, your system may be producing more power than before and may be causing one cell to go into over voltage protection( OVP)
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    Urgent - JK BMS went Offline in the middle of the night - SOC Stuck but still discharging ???

    Lets start with the simple stuff first. Did you top balance the cells before building the batteries? Can you use the jk bms app to look at your settings? I find it hard to read your charts but I think one of your bms is turning off when one cell in over voltage, what do you have the OVP set at...
  9. S

    Need help with JK BMS and Deye inverter.

    How are your batteries connect in parallel? Can you switch the batteries around to see if the trouble followes a battery or stays the same. You could switch the bms around to see if the trouble followes a bms.
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    Need help with JK BMS and Deye inverter.

    You should check out Off Grid Garage on youtube. Andy has a video of his settings for these jk bsm, some problems with these bsm and solutions for these bms. He likes them and has regular contact with Jk to resolves issues he and his followers find. Good Luck.
  11. S

    JK Bms no access to Setting or Control after app 4.18 update

    I fix the problem, I found an older version of the app on line , downloaded it and now everything is working fine. The old app that works is V 4.14
  12. S

    JK Bms no access to Setting or Control after app 4.18 update

    I have two older JKbms and the app upgraded to v 4.18 and now I can not access the settings or control pages. The setting and control buttons are across the botton of the page but when I try to access them it just stays on the status page. I have reset the app and the bms but there is no change...
  13. S

    Free BYD 24 Volt Battery , Hilton Head, SC

    FREE, my BYD 24 Volt battery pack purched in 2020 from Battery Hookup. I took it out of my system and tested it in Dec 2023 and got 107 ah which is about 2.7 kwh. Still has some life left in it but I am building my own packs now. I removed the ANT bms that is in the pictures. No shipping ,pick...
  14. S

    24v LiFePO4 SmartShunt settings

    You may want to look at Andy's you tube channel or go to his web site off-grid-garage.com . At the top right go to tools then, my settings, he has his setting for a victron smart shunt and a link to a video about the settings. His you tube channel is full of great information.
  15. S

    FIRE Eve LF230 and JBD BMS 4S 12V 200A

    Looks like it was over charged, how were the solar panels disconnected and was the another source that may have over charged the battery? Any fuses?
  16. S

    So i did a thing...

    Great work on your battery, you should sent one to Will so he can do a review on it.
  17. S

    JK BMS Active Balancing

    Reload page, you should see the edited version.
  18. S

    JK BMS Active Balancing

    The battery cables should be on the terminals first and then add the bms wire, both negitive terminals are wrong( at the bms) and one of the positive terminal is wrong. Another thing is how the batteries are connected to the wires going to the inverter. The positive wire goes from battery 1 to...
  19. S

    Small ground mount

    Looks great, it is always good to recycle stuff. Now the journey begins, before you know it you will be completely off-grid. Welcome to the party.
  20. S

    BMS from Alibaba suppliers

    I have not used Alibaba, but I have bought my JK bsm from Hankzor BSM Store on Aliexpress. I have bought two from them at different times and have had no problems. Good Luck.
  21. S

    Lishen 272Ah cells - supplier sources?

    I have the same cells from the same bad source and have been looking for replacements , as one of mine does not stay up with the others. I have found the cells on line at Sriko batteries here in the USA, but I have not ordered from them or know anything about the company. This is the only...
  22. S

    What price is fair for used cells?

    The screenshot show the cell wire resistance for each cell, the measurments seem all over the place. My jk bms shows my cells wire resisrance very close to each other. I am not sure if this matters, just an observation. Do others with a jk bms have cell wire resistance measurment close to each...
  23. S

    Retrofit of central heat to Hydronic.

    I can't comment on the cost of retrofitting, but we built a house in Colorado and installed infloor hot water heating while it was being built. The cost was twice the expence and force air heating system. That said , the infloor heating is the best system for heating. If you set the temp at 72...
  24. S

    "Support The Forum" Banner Now Up

    Look great and it is a wonderful idea to help the people who work the hardest to keep the forum alive. I have been here from the beginning and have learned so much from everyone and could not have made my batteries and system without everyones help. Thanks Will for starting the forum. Looking...
  25. S

    JK bms LCD - what is the attached ring?

    I found one on Aliexpress and the review said "Small display for handlebar mount. Good brightness but no settings possible". Looks like it is a handlebar mount for an ebike. Is there a set screw to attach it to a handle bar?
  26. S

    18650 Battery Store HELP!

    I purchased 8 230ah cells from them in dec. The cell have been perfect, in great condition , well balanced and stay well balanced. I paid for the garde A cells because I had trouble in the past with grade B cell from other sellers. I am always surprised that poeple purchase grade B cell after...
  27. S

    Rate my battery: 280ah 24V

    Nice build and very clean wiring. One small thing I see is the short jumper wire between battery 4 and battery 5 has the black end on the positive terminal and the red end on the negitive of the other battery. Just turn it end for end or change the heat shrink. But it is still a clean and will...
  28. S

    JK 4S 200A BMS Electrical Noise

    Does your jk bms have active balanceing ? Do you think it may be the bms trying to balance while charging. Could you turn the balance off during charging to see if there is a difference.
  29. S

    Designing Victron System for Keystone RV Travel Trailer

    Victronenergy.com has a lot of system schematics for trailers and mobile wiring, with a lot of information. Just go to victronenergy.com, downloads, system schematics, multi plus , US van drawings. The schematics are more than you may need but it shows grounding and bonding for a mobile unit. If...
  30. S

    Copper coil pipe in chest freezer to heat exchange radiator

    You are just moving heat around, from the room, to the freezer, back into the room from the heat made by the freezer. You will only make the room hotter. you need to remove the heat to the outside , that is what an AC unit does. It transfers heat from inside the room to the outdoors.
  31. S

    Failed JK BMS

    Success, I completed the install of my new JK bms today and everything is working properly. It is nice to see it balance with about 2 amps, I have always had one cell that would act up on charging, it has been that way from the beginning.( over two years). the new JK bms is keeping that cell...
  32. S

    Failed JK BMS

    Great, I just received my JK bms B2A8S20P yesterday, mine does not have the heating option. I am going to replace my JBD with the new JK bms sometime today or tomorrow when my garage warms up. I will keep you posted as to how it goes. The JDB is ok just does not have the active balancer that...
  33. S

    Low cost balcony railing mount for Solar panels. : )

    Great, the Victron web site is full of great information, not only for there equipment but for wiring in general, I get a lot of good information from there wireing diagrams for different systems. Such as fusing and breaker location in a system. Yes Diagonal for your batteries will help them...
  34. S

    Low cost balcony railing mount for Solar panels. : )

    I like to see poeple come up with great ideas to mount their panels, you are very cleaver and inventive. Great job. you power room is also well thought out and the wiring is clean with no messes. If you batteries are in parallel you may want to look at Victronenergy.com, download section,then...
  35. S

    Has anyone experience of understanding how to use the ZKE-Tech battery tester. The instructions are vague to say the least.

    Check out Andy's youtube channel, Off-Grid Garage. He uses this battery testers and likes them. His channel is full of a lot of great information and he can be quite intertaining.
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