Recent content by pjones

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    Leaking Electrolyte from Bigbattery Powerblock

    Not really, they should have an E&O policy or a specific rider for product defects that should cover the cost. Of course, if it's 11 defects out of 100K, I don't think that would qualify for recall action? Now the sticky part is this: BB has been made aware of the issue, there is a video...
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    Leaking Electrolyte from Bigbattery Powerblock

    Have you done a close examination of the cells to see if you can locate where it is leaking from? I don't trust that BB would be transparent about the issue. I know a lot of people have purchases these types of cells, and am wondering if there is a weakness with them that could be identified...
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    For those of you looking to monitor your ANT-BMS with Pi3 via Bluetooth.

    You don't have to have a Pi for each BMS, I am not sure what the limit is, but I have a Pi talking to 2 right now and I am sure rfcomm can do more than that.
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    Help with JBD BMS--voltage for BT module

    okay, never mind, I figured it out. Looking at the chips on the Bluetooth Module, I noticed there is a HT7533 LDO, so that is how the made it safe to power the module. Leaving this post in case someone else runs into this question.
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    Help with JBD BMS--voltage for BT module

    Hi, would really appreciate it if someone can check something for me. If you have a JBD BMS and have a bluetooth module on it, can you check the voltage on the VCC pin for me? Is it 12v, 5v or 3v? I have a 13s unit, and a bluetooth module that I want to connect to it, but checking the...
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    For those of you looking to monitor your ANT-BMS with Pi3 via Bluetooth.

    BTW, I can control the BMS now. The checksum is just the sum of the 3 bytes (address + data + data). So.... sending it: 'A5A5FA0000FA' # Turn Off Charge MOSFET 'A5A5FA0001FB' # Turn On Charge MOSFET 'A5A5FE0000FE' # Reboot BMS 'A5A5F90000F9' # Turn Off DisCharge MOSFET 'A5A5F90001FA' #...
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    For those of you looking to monitor your ANT-BMS with Pi3 via Bluetooth.

    I haven't but I'd imagine if someone had the skills and effort, it might be possible, but maybe not worth the effort since almost any PI could work, and without Python, it might take some work to debug?
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    For those of you looking to monitor your ANT-BMS with Pi3 via Bluetooth. I think they are the ones behind the BMS... The app for Android is called Mayi-BMS and there is a link to download it from their site, then you can side load it.
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    Help! Did I ruin the panel?

    Be careful with the MC4 connectors, there are lots of poor quality ones out there, and the connections may be loose if you didn't crimp it well.
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    Voltage drops and resets after a few seconds—stuck in safety mode?

    Sounds like it, if it's not under warranty, maybe it's time to take it apart and see if you can reset the BMS (or just call their support people to see if there is an easier way) :)
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    I am removing the Li-ion 48V pack from my recommendation list

    BigBattery doesn't even respond to email (pre-sales question). I can't imagine post-sales support is any good. Good luck, hope their batteries don't burn your house down.
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    LFeLi-48200TB BMS faulty?

    Since there is a RS232 port, you can try connecting a USB to serial cable to it and see if you can get into the BMS. From there, you might be able to change it. You can always just wire in your own BMS--$80 units from eBay are pretty capable as long as you aren't pull 100s of amps.
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    Is it possible? Solar charge 96v EV while driving?

    Have you considered making a Power Ranger suit made of solar panels? Then you can be charging while you ride, and when you walk around. Just carry the 24s50p pack with you. :)
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    Weird question about a weird smell

    ...Any ideas why it was only discharged once?
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    LFeLi-48200TB BMS faulty?

    As far as I know, there isn't generic BMS software that can talk to any BMS. If you are lucky, your BMS might have a common interface like modbus, but you'd have to know what values to pull from it. I see there is a menu button and a reset button, have you explored those options to see what...