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diy solar

Recent content by WingNut

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    JBD temp sensor out of wack!

    Tap on the displayed temperature on the Android app and adjust works on my JBD BMS.
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    XiaoXiang BMS Spontaneously resets Remaining Capacity display

    I did the test once and it was two years ago so I don't remember that much about it. I did record this: 13.331V 90% SOC 13.327V 80% SOC 13.325V 70% SOC (after 24 hrs rest) 13.174V 60% SOC (after 24 hrs rest) 13.164V 50% SOC (after 24 hrs rest) 13.160V 40% SOC (after 23 hrs rest) 13.102V 30%...
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    JBD/Xiaoxiang BMS Apps List

    I haven't used it but it appears that it maybe has something to do with remote viewing of BMS/pack status. Who knows, maybe even remote configuration. There's a related Jiabaida cloud login page in either Chinese or English. Being able to see or maybe even configure the BMS remotely would be...
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    Current calibration on Overkill/JBD/similar smart BMS

    Use FUNCTION SETTING -> RESET CAPACITY to bring it back inline with your 20/40/60/80% voltage set point choices after periods of no use or low current use. Your 20/40/60/80% set points need to be accurate though or your reported SOC might be way off. Mine are confirmed resting voltages after...
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    JBD BMS incorrect voltage readings

    JBD BMS voltage readings can be calibrated using JBDTools with UART box & Windows PC and maybe also with the IOS app (not 100% sure on that).
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    JBD/Xiaoxiang BMS Apps List

    There are many app that work with JBD BMS units. All apps in this screenshot came from Google Play (except for xiaoxiang 3.1.1026 & XiaoXiang 3.2.000). Carplounge is still my favorite for full access. I also use Liontron Multi, BelyEnergy & Aollithium.
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    Xiaoxiang BMS app/software update from wnsnty.xyz????

    QR code use is optional. The download link is below the QR code: http://www.jiabaida.com/appdown/index.html Other apps that work: https://diysolarforum.com/threads/jbd-xiaoxiang-bms-apps-list.29890/
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    Xiaoxiang App discussion-questions

    I got it here: https://www.pgyer.com/Bzt1 There used to be a link to that site on Jiabaida's website. 3.1.1026 (build 5) 2021-06-05 3.1.1026 (build 4) 2020-12-07 3.1.1021 (build 3) 2020-08-21 3.1.1020 (build 2) 2020-08-17 3.1.1015 (build 1) 2020-02-17
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    JBD/Xiaoxiang BMS Apps List

    http://www.jiabaida.com/appdown/xiaoxiang-customer.apk
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    JBD/Xiaoxiang BMS Apps List

    The downloads direct from jiabaida.com have been updated to 2.0 in English - It's now Android version 3.2.000.30 updated from Android version 3.1.1026.27. It's not on Google Play however. It's shown here connected to a small 18Ah battery pack I have. It doesn't look like you can change...
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    Help interpret my BMS screen

    The SOC estimation has been describe as Method 1 - Voltage based and Method 2 - Coulomb Counting here: https://diysolarforum.com/threads/jbd-overkill-bms-state-of-charge.28329/ Changing settings or using the Reset Capacity option forces the SOC estimate to be based on your 20/40/60/80% voltage...
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    Current Connected 150a JBD BMS

    JBD has wiring diagrams on their Aliexpress page. Here's a 150A BMS listing: https://www.aliexpress.com/item/1005002328847169.html Scroll down that page for the wiring diagram.
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    JBD 150A 8s BMS connections

    Looks like you can use the alternate wiring method because the 8S 150A board has the alternate connection points. There's B1, B2, B3, B4, B5, B6 & B7 (approx 3.2V, 6.4V, 9.6V, 12.8V, 16V, 19.2V & 22.4V) connection points on the 8S boards. To complete it, B- is 0V & B+ is 25.6V. The two...
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    jbd / overkill bms - state of charge

    Function Setting is on the Android app main menu.
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    jbd / overkill bms - state of charge

    FUNCTION SETTING -> RESET CAPACITY brings it back inline with your 20/40/60/80% voltage set point choices. Tested & confirmed resting voltages accurately reflect SOC (24hrs or so at rest). That's the only time voltage is useful for determining SOC in my opinion. With cylindrical cells, I'm...
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