Recent content by lincomatic

Drops to what value? I don't see a setting to tell it at what voltage to start charging. When the battery is at 45V, it refuses to charge from the grid, unless I switch it out of SBU mode, even though the LCD clearly shows that it's supposed to be charging Yes, I know they're supposed to be...

I have a 3048PIP-LV-MK, and am having 2 issues with it. 1) Is it supposed to be able to charge from the grid in SBU mode when there isn't any solar energy coming in? The display shows it charging, but no current is sent to the battery unless I switch it to UCB or SUB mode 2) It can't run down...

OK, but your screen shot above says 37.44V. Sorry, I'm out of ideas. The only time I've seen missing cells was when I was, like you, redoing some connections, and I inadvertently swapped 2 of the balance leads.

Sorry, didn't see where you said the voltage was ascending on the balance leads in your first post. But I'm puzzled, you said the pack voltage is perfect.. how many cells do you have in series? The pack voltage depicted in your screenshot is correct based on the number of cells it sees, but it's...

test the voltage at each lead and make sure it's ascending. i think you might have swapped a pair

Thanks for posting the explanation. OK, I was finally able to test this today. Sure enough, if I turn off the charging MOSFET while the discharge MOSFET is on, and large current is being drawn, the MOS temperature increases rapidly. Turning the charging FET back on instantly causes the...

Are you kidding me? Why do they give you separate manual switches if it's bad to use them? That's a really stupid design. The reason I had the charge FET turned off is because I was discharging through a new inverter whose settings I'm not familiar with, and I wanted to make sure that it...

Yes, it's still wanders when the balance is off. Oh, another question, does yours run really hot? Mine is rated at 150A continuous, 300A surge. I was pulling ~40A last night, and the MOS temperature was around 71C, which is well below the 90C default cut off in the app, but the thing was so...

Sorry, my bad. I took a few vids yesterday. you're right, the one I uploaded was discharge, but charging is similar. I'll check again later today see if it's actually a bit less on charging.

Oops, I'll change the name of the clip, yes, it's JK-B1A20S15P

The vid clip is of charging. It also does it while discharging. So yours wanders similarly? I just want to make sure this is normal behavior. Thanks.

Not sure what you mean by calibrate.. calibrate which parameter? I have two of these units, JK-B1A20S15P, and they both behave exactly the same way, using the JK BMS app on iOS, and the Enjpower app in Android (makes sense, since the jitter is triggering stuff like overcurrent/undervoltage, so...

Sorry, it turns out that the remaing runtime is only shown in one of the official apps on Android. I've linked a list of the free apps I found here: https://diysolarforum.com/threads/jbd-xiaoxiang-bms-apps-list.29890/ Take a look at my description of the first Android app. I'm still working on...

There are so many apps for the Jiabaida (JBD)/XiaoXiang BMS, I thought it might be helpful to post them all to one thread. Here are free the ones I've found so far. iOS: This is the official app, linked directly from the manufacturer, jiabada.cn's support page...

I just got mine booted up yesterday. When it's charging, the amps display is just wandering all over the place. I have my charger set to 20A, and my ammeter shows a rock stable 20.2A going into the BMS. But both the iOS and Android apps show the current wandering between 6-30A. And sometimes...