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The first thing is to look up the spec sheet of the cells you are using. Even amongst LiFePo4 batteries the settings will vary to match cell’s abilities. Like the low voltage cut off, amperage, Ah, etc. However equally as often it’s a swing that got overlooked like temperature cutoff that is set to 0 or something like that. I would be glad to help you more but it’s hard on TH-cam comments. If you leave a comment on one of my Face book posts that I’m in, I’d be glad to go through your settings more in depth . - Levi Thomas facebook.com/share/15KZRwdy3S/?mibextid=wwXIfr

@@electromechanicalstuff2602 this is very common and it almost always means one of the parameters isn’t set right or the balance wires aren’t connected properly. I’d start by unplugging the balance plug from the BMS and checking the voltages of every pin with your voltmeter touching the blue wire with the negative lead and then check each pin with the positive lead. Make sure they are all the correct voltage. Then go over every single setting. Don’t forget temperature is in Celsius.

@greentecbatteries I did all of this several times everything was fine. The only setting I saw that was different between one that was working and two that weren't was the function setting for switches was off on the one that worked and on in the ones that didn't. I tried switching them off also but it would also not take the command. I walked away for a few hours. Came back then tried to turn off the switch function again and then they all took the command .. with the switch function off the discharge automatically came on and now the switchs for charge discharge actually take commands. Seams backwards and off it didn't take the command earlier but they are now all working. I disconnected the balance leads several times to attempt a reboot of the BMS as well. Nothing worked except some time... Ods

Hi, the bus bars on the bottom of the BMS are permanently bonded to the PCB board. You just line up the whole BMS and bolt it on the cells.

Yes the eMatrix batteries have 252 Li-Ion NMC batteries in each module. The Nissan Leaf batteries are also Li-ion and have a unique design, they have two cells in each rectangular unit so on the top there are three contacts. They also have LiMn2O4/LiNiO2 anodes and cathodes for longevity but you can treat them like any other Li-ion as far as the BMS goes.

Thank you so much, Im glad it helped. I hope you subscribed because there will be more to come! You can also follow us on facebook facebook.com/GreentecAuto/

I was using an iPad in the video, which could be some of the difference. I don’t use Android often, but the link for the Android app is the most recent one that I am aware of that is fully unlocked and compatible with almost all the models. The BMS should come with a barcode to download the version to be used with that specific BMS, but they usually have fewer features. If you have your specific BMS model, you might be able to contact the vendor you purchased it from or contact JBD directly and get a newer unlocked version for your BMS.

@@greentecbatteries Thank you very much for your reply

Ditto

Yes. The heat connection is just a pair of 22AWG wires however you have to select to add that feature before you purchase it. I believe it added about a dollar to mine to add the heat plug.

​@greentecbatteries yes i ordered with heater now waiting... is it possible to set it up to draw power from pv to heat up before charging?

Each module is 52v and the capacity of one is 1,721Wh, this is the same for both generation 1 or 2 cells and using a 50A or 100A BMS.. Raising the amperage of the BMS doesn't change the capacity, it just allows you to use that electricity quicker. I personally use a 100A BMS in a 30A scooter just so it runs cooler.

@@greentecbatteries As you mentioned the BMS can't increase the battery capacity. It can do all the protection work so we can use it for a long time without damaging cells. I assumed these are used batteries. That's why I asked about the remaining capacity. It seems like 1721Wh battery block has 30-32Ah modules . Anyway you are doing a great job by giving another life for these used batteries.

Yes, the 7-21s JBD boards have a different wiring diagram. The B21 and B20 are connected to the cell while B19 and below can be combined to match your battery. This 7-14s JBD combines the positive most wires together, which is a bit less confusing so always refer to the wiring diagram.

Yes the optional LCD screen that comes with the JBD BMS has buttons on it as well and has a very good interface. You can change settings and toggle the discharge and charge function right from the display.

Absolutely. I would recommend the Samsung INR18650-35E model from Greentec Auto because it can handle 460A peak. We also sell buss bars to connect them in series. Yes that 250A BMS would be a perfect fit for that. When you wire it up you will combine the b20 and b21 wires together leaving b22 to be the positive most connection, then you can wire it up to a 21s battery. www.greentecauto.com/hybrid-battery/repurposed-batteries/energy/252-18650s

Each module is already 52v and the capacity of one is 1,721Wh and can output 5,200 Watts continuous so two would be the minimum. A golf cart averages 150Wh per mile so that is 11.5 miles per battery kit (23 miles for two modules). However its not ideal to push them to their max all the time, both for heat and it wears out the cells faster. So the more modules you can fit in there the better. The Length is 11.9291" (303 mm). Width is 8.7795" (223 mm).

The JBD BMS needs to have a latching switch, not a momentary one. Meaning it makes the connection all the time when it's on. You can get these in a switch or push button form just make sure it isn't momentary.

I'm glad it helped! No those settings do not affect each other. Under Parameters, Capacity Voltage and then setting the percentages is really a preference. That is what will be displayed on your phone, tablet or the LCD screen if you have one installed. I like mine to show the packs true capability even though the Protection Parameters settings are going to shut off the flow of current before it hits zero. Think of it like a reserve tank in an old gas motorcycle or car. It will shut off if you weren't paying attention and got that low but you could still open the app and lower it to the batteries safe minimum then keep driving somewhere until you can charge.

The 7s eMatrix batteries are from Greentec Auto: www.greentecauto.com/hybrid-battery/repurposed-batteries/energy/252-18650s The JBD BMS is from AliExpress found here: s.click.aliexpress.com/e/_mM4eamG Those battery modules come as a complete unit with the cells. We don't make them and neither does the manufacturer so no one else sells them and no one sells just the case without the cells but the price is incredibly cheap, less than a dollar per cell. If you buy cell holders and nickel strip and make your own 7-14s battery pack you can still use these instructions to wire up the BMS.

The 7s eMatrix batteries are from Greentec Auto: www.greentecauto.com/hybrid-battery/repurposed-batteries/energy/252-18650s The JBD BMS is from AliExpress found here: s.click.aliexpress.com/e/_mM4eamG The eMatrix modules are no longer made by the manufacturer and no one else sells them nor does anyone sell only the case without the cells. However GreentecAuto.com sells them incredibly cheap, less than a dollar per cell. Once you factor in the cost of cell spacers, nickel strip and labor it is probably cheaper than making your own pack with your own cells.

Thats awesome. Its a great battery. By the time you factor in cell spacers, nickel strip, labor and time these are an incredible deal. We don't sell the housing separately but you can buy the whole module with the case and the cells here. www.greentecauto.com/hybrid-battery/repurposed-batteries/energy/252-18650s

This BMS does do cell balancing. I have been using this brand in dozens of different batteries for many years, as well as over 10 other brands. I can say from experience that JBD is far superior in its balancing abilities than the other comparable ones like ANT and Daly.

Yes we will be posting a video soon about how to program the JBD BMS app. The best version of the android app can be found here. bit.ly/3e1g6GT

You're absolutely correct for long term use. If you were going to do a permanent installation in your house or operation that is unsupervised additional safety measures should be added, like you said. This video was to demonstrate the basics of wiring of a BMS according to the manufactures wiring diagram and to demonstrate it functioning. To address the charging of the LFP battery for a few seconds in the demonstration, we don't stock or sell any lead acid batteries at Greentec. Also if you try to charge in LiFePo4 mode it will stop you because it wants balance wires connected for exactly the reason you pointed out but again the focus of this video wasn't to show how to use iChargers. You can use NMC batteries as a UPS buffer though. Thats what every mobile laptop power-bank is, Tesla power wall, etc. They aren't using LFP. The DC power supply needs to be set at a lower voltage than the BMS maximum that way it will never fully charge it to 100% and the BMS should never need to open circuit. Again I only charged it to 100% to demonstrate that it will open circuit and how you then go in and clear the warning to turn on charge and discharge again. Also the iCharger has paralleled fuses built into it as well. Thank you so much for your input, that would be great content for another hour long video.

We do ship to Canada, shipping costs depend on your location. The 100a BMS in the video was the last prototype and final version is being manufactured now and should be available within 2 weeks. We will set up preorders in the next few days.

@@greentecbatteries when I fill out my order, when it comes time to enter the state (CANADA), I cannot enter it directly, and it does not appear in the options, so I cannot order!!!

Sorry about that. The shipping costs in Canada vary a lot based on your location so please call in to our toll free sales line 1-800-773-6614 to get a quote and place your order. You can also reach out to our contact us on the site but it will obviously take longer to get a response.

@@greentecbatteries I called the number you mentioned to me, and they told me that they did not sell the BMS alone!!!!, so I wrote, and no answer!!, not easy to want to buy a BMS from you 😞

No this BMS cannot be connected in series because it uses mosfets to shut off the flow of current if anything gets outside of the safety parameters. They ones inside the BMS are always rated a little bit higher than the maximum voltage of the BMS so if you were to put 4 in series and something went wrong in one of them the voltage of the entire pack would be far greater than the mosfets are capable to stopping and there is a high likelihood of it frying out the BMS and possibly allowing current to continue to flow which would be a fire hazard. The only BMS capable of doing what you are talking about are ones made for that many cells like an Orion BMS or ones that have many slave units that handle a portions and all communicate to a master BMS like the Thunderstruck BMS. Both of which are very expensive. Also are you sure your inverters 160v minimum is that of the battery and not the solar panels circuit? The 100a version is in production now and will be available on our site here in a couple weeks. Thank you!

@@greentecbatteries Thanks for the detailed reply, I now understand the limitations. Yes, unfortunately the inverter only supports HV batteries. I will look at the work that Dala is doing around hooking up used vehicle batteries to inverters and using the existing BMS and safety devices / contactors in the battery pack.

Trolling, or just ignorant ? You can't just buy a "fossil fuel powered generator" and leave it lying around. It requires maintenance, the fuel goes bad if you don't use it very often, it's noisy, polluting etc. You do know what the BMS is used for ...it monitors the individual cell voltage so you can pull out and replace a cell that is going bad.

You are not wrong, there is deviation in capacity of the modules that come out of one pack. However, if you purchase our modules, they will all be capacity tested and grouped so you wouldn't run into that issue. They would all charge and discharge relatively evenly.

When you buy the BMS it comes with a QR barcode sticker to download the version of the app specifically made for the BMS you received as well as a QR barcode sticker of the MAC address for that specific BMS to pair it to your app. However the App is called Xiaoxiang Electric in both iOS and Android and is a logo of an elephant

I’d like to know too

​@@kaiowasdeath Yes here is the link to buy the BMS alone or as a kit with the cells. www.greentecauto.com/hybrid-battery/repurposed-batteries/energy/nissan-leaf-battery-pack-with-bluetooth-bms-48v-37ah