diy solar

diy solar

Recent content by gjonesy84

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    18650 Powerwall cell Cooling when charging

    Hi All, I've had a 18650 power wall running for 3 years. I've not had any issues which any of the packs but noticed recently on a night charge on the cheap off peak. One of my pack is cooling when charging. I wonder if this Pack is suffering from some kind of strange exothermic type...
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    Bi-directional DC/DC Converter

    Brill. Thanks for your reply. That seems the way to go. cheers Gareth
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    Bi-directional DC/DC Converter

    These are the 2 buck converts I have ordered.
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    Bi-directional DC/DC Converter

    Hi, Thank you for your replied. Much appreciated. Functional description of my shed system is I have an 400W solar array connected to a Victron MPPT Solar Charge Controller. Connected to the dc bus is a 3KWh 7S 24V lion battery pack. An adjustable 500W inverter and 30A charger. I only use this...
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    Bi-directional DC/DC Converter

    @SeaGal unforunately I cant. I bought aload of those 18650 pcb boards. I did have a look into how I could split each pcb trcks to make 2 x 7S but its impossible. @DIYrich I use node to control how much I charge and discharge to my house depending on house load, solar generation and cheap off...
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    Bi-directional DC/DC Converter

    Hi All, I have a 48V 18650 6kwh battery running for the last 3 years in my garage. Ive recently upgrded them to Lifep04 cells for safety reasons (dont want lion in the house anymore). I want to couple up the 48V 18650 6kwh battery with my shed solar install but my battery voltage is 24Vdc...
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    JK BMS SOC issues

    Hi Nigel, Funny timings. I yesterday fitted one. Along with some nice Victron Mega fuses. Confirm JKbms Shunt is pants. In with the victron smart shunt. Cheers
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    JK BMS SOC issues

    Hi All, Thanks for your replies. I think your right the JKBMS SOC is not accurate. I understand that the SOC cannot be accurately cross referenced with the cell or bank voltage due to the flat discharge/charge curve. This links were a good read :) Im running the venus OS drive for serial...
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    JK BMS SOC issues

    Hi All, Ive recently built a DIY 280Ah Lifep04 24V battery managed using a JK BMS. Last couple of days my bank reached the low cell voltage cutoff of 2.6v and reset the SOC to 0%. Then at 00:30 the cheap off peak leccy tarrif that im on. It kicked in so it started a night charge for 20 mins and...
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    For those of you looking to monitor your ANT-BMS with Pi3 via Bluetooth.

    Hi, You don't load it into influx. The getbms-ant.txt is the instructions of how to set this up from start to finish. What stage are you at now? Do you have a SD card flashed and rasbrian up running? Cheers
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    For those of you looking to monitor your ANT-BMS with Pi3 via Bluetooth.

    Hi Jon, Start by flashing a SD card with the latest version of raspbrian here. Im running it on a Pi4 with a 32GB sd card. https://www.raspberrypi.com/software/operating-systems/ Then enable SSH in the settings. I use Putty to connect to the Pi. Then use the getbms-ant.txt file to load in...
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    For those of you looking to monitor your ANT-BMS with Pi3 via Bluetooth.

    Hi, Thank you for your reply :) Your code didnt quite work but certainly pointed me in the right direction. This code below works. Thought I would share this if any one else has want to do the same. As everyone probaly knows that the balance current is not much and only enables when...
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    For those of you looking to monitor your ANT-BMS with Pi3 via Bluetooth.

    Hi How do you go about writing to the ant bms? I want to toggle the balancing. Any help would be much appreciated :) Cheers
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