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  1. Diesel Pro

    Issues with JK BMS

    JK-B2A8S20P This unit has been in and working well for some time now, but recently I have had a couple of hiccups. The latest is that it said the sample resistance wire is to large and cut off the discharge. The previous time that I was up to visit it was in protect and I checked al the...
  2. Diesel Pro

    Resistive heater

    I've got my 24v 280ah bank built into a milwaukee packout box. Cabin is heated but the pilot can go out in a big wind. I set my BMS charge cut off to 1°C. I don't care to take my cells out to pit a pad under them. What I was thinking is maybe a large ceramic low watt resistor like you would...
  3. Diesel Pro

    Solar awning for shop building

    One project I have always wanted to do is a solar awning for one of our shop buildings. We have two 8x5 windows facing south and get plenty of unwanted solar in summer. My thought is that if I do it right I could set them up so that the angle can be changed manually as the seasons change...
  4. Diesel Pro

    Panel safety precautions

    My array has four solar world 320 watt panels. I run 8 gauge wire 50 ft from the panels to my charge controller. When the system was set up it was set up with 15 amp breakers. I'm occasion I come to find one of the breakers has tripped. I know that I am not overloading the wires or the breakers...
  5. Diesel Pro

    Form versus function

    Magnum 4024 inverter with my DIY EVE 280AH 8s battery 200amp BMS. Room maintained at a point just above freezing. Option 1) Set the battery directly below the inverter. About 4' of cable required. It's convenient for the inverter but not so convenient for the garage space. Option 2) The...
  6. Diesel Pro

    Equalize

    OK that got your attention. What idiot would try to equalize a Lithium battery. Hear me out for a bit here With all the discussion of where to start active balance, and battery life I got to thinking about this as a way to periodically top balance. Maybe the term EQ could be replaced with...
  7. Diesel Pro

    EVE cell issue-retest or reject?

    New 8s EVE LF280K build. I top balanced using multiple steps. My first screenshot is what I got when first connected to the BMS. Delta Volts .002 a good day plus after balancing I ran my discharge test at approx 100 watts. Took days of course, but the delta remained nice and low. Under load...
  8. Diesel Pro

    Active balance settings JK BMS

    I have a JK-B2A8S20P with 2 amps of active balancing. I'm curious what people prefer as far as the active balance voltage range? Do I keep it active most of the time to keep the cells in line or do I cut it off below a particular voltage? I have just mocked up my 8S 280ah EVE pack. I top...
  9. Diesel Pro

    JKBMS fake site?

    I'm told by Hankzor that this is a fake site: https://www.jkbms.com/ That the ENJ Power app is not what I want even though it seems most are using it. Jikong is what I need and the logo is close but a bit different. At any rate the Jikong app does link from the QR code on my BMS, but I...
  10. Diesel Pro

    JK BMS BT error: Device is not supported

    I have my JK BMS and the ENJ app 3.6.3.74 loaded to my Android phone. It sees the BMS and recognizes the number but when I go to connect it gives the message device not supported. I've tried email to JK as well as message to Hankzor store, but not getting anywhere so far.
  11. Diesel Pro

    JK BMS received

    Received my JK BMS today. I ordered the 8S 2A 200A BT based on what I saw online. The Hankzor store showed the black case unit with 2 pair of cables off each side. What I received was a silver box and no cables JK-B2A8S20P. It is the correct unit and apparently I missed the pictures showing...
  12. Diesel Pro

    Battery Status heads up display

    Current plan is 8S 24v 280AH using a JK smart BMS with bluetooth. I'm also considering a secondary heads up display display. Something that a friend or family member can look at and tell me what the status is if they do a check in. I'm wondering if I should do the whole shunt/meter thing or if...
  13. Diesel Pro

    24v battery configuration

    I'm in the process of building an 8s 280AH battery for my off grid cabin. I have the cells here top balanced and assembled as 2 12v batteries that I was planning to assemble into block configuration. On the one hand I can build the 8s 24V block configuration into a Milwaukee Packout case. On...
  14. Diesel Pro

    My EVE LF280K 8S 24v build

    Cells arrived today from Amy Zheng/Jenny Wu @ Docan. Ordered 12/22/21. They "shipped" on 12/24/21. I say "shipped because that screwy deal where the label is created but the package hasn't entered the system yet. The actual ship date that they hit the TX UPS system was 12/27/21 with an...
  15. Diesel Pro

    Bus bar insulators

    With all that conductive metal I'm surprised we don't have plastic clip on insulators to cover the bus bars and terminals. In a marine application we have cables to connect the batteries and somewhat poor rubber insulator boots. In the battery bank world it would be so simple to have a plastic...
  16. Diesel Pro

    24v 8s 230ah battery build-my first

    I started looking at Big Battery but too many issues. Also considered Chins/Ampere time. Neither of these had decent monitoring or low temp charge protect so now I am looking at building my own. Given proper instruction I can build about anything. My hang up tends to be analysis paralysis so...
  17. Diesel Pro

    30 cal ammo can

    Anybody build a 24v 200ah into a 30 cal ammo can? Contemplating whether I build my own or just buy a cheap Ampere time 100ah unit to try out.
  18. Diesel Pro

    Battery upgrade time

    Off grid cabin-away 99% of the time. Magnum 4k inverter, Midnite solar Classic 150 controller. 4 solarworld 320w panels on a stationary pole mount I have a 24v 430ah wet battery bank that is going on 5yrs old and pretty much cooked. Looking to replace with lithium and be done with it. I...
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