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diy solar

Recent content by DENWA

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    Looking for a list of Prismatic LiFePO4 cell sizes

    Trying to replace a 9"x 9" X 8" lithium ion 24V 130Ah battery with 8 LiFePO4 cells and BMS. Having issues with current solution and changing format of the existing box is very cost prohibitive. really hoping I can find some and source them here in the USA as that would be a huge plus vs...
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    2024 YouTube Video Ideas

    Would like to see a series of "Will-rescues" where you travel around and help folks struggling? Get the VAN back on the ROAD!
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    Looking to replace these 6T batteries 24V ~125-150Ah

    Anyone have a list of available 100-150Ah Prismatic LiFePO cell dimensions? Trying to fit 8s of them will be difficult I'm afraid Could really use the help here
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    Looking to replace these 6T batteries 24V ~125-150Ah

    They have obsoleted the 125AH NCM and 150Ah NCA variants for poor cycle life. They only offer the 103Ah shown here, but its just too little capacity for my mimimum runtime. https://www.bren-tronics.com/bt-70939.html Was wondering what my best option are that fit in the same exact space as we...
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    LV 6548's Split phase = Not Awesome

    Cam I ask what you used to draw this?
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    LV 6548's Split phase = Not Awesome

    @MPP Solar USA - Ian Roux is a good dude, but I feel his hands are tied with his support through MPP Solar. I've had so many issues with the MPP LVX6548 its simply not worth it. Would buy from Ian but never an MPP product ever again.
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    LVX6048 Burned up on day 1 searching for cause

    Now that you mention it I did see a poor solder joint on the collector ( center pin of Q2)
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    LVX6048 Burned up on day 1 searching for cause

    Ian hasn't commented at all. He charged me $68 to ship a new PV input board UPS Ground. I'll take more pictures today.
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    LVX6048 Burned up on day 1 searching for cause

    Here is my amateur's analysis of the MPPT circuit on the LVX6048 PV input: Removed Heat sink to expose switching components on the PV input board. Notes: 1. Board is Conformal coated very nicely and its hard to remove with Isopropyl and a brush. Good JOB with the moisture barrier! 2. a 1uF...
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    LVX6048 Burned up on day 1 searching for cause

    Thanks for the checklist. 376V and 375V Open circuit strings were combined and double checked to be 376VDC. Polarity was checked before and after connection to match the PV1 markings. Unit was operating normally Saturday Afternoon and Sunday which was very nice sunny but ~32F (0C) day with...
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    LVX6048 Burned up on day 1 searching for cause

    OK I'm willing to accept conspiracy theories here too. ? I'm just worried I missed something and when parts arrive from Watts24/7 this could happen again. Then what do I do?
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    Lvx6048 issues making it unusable

    Also you may want to check out he NEW 63.06 FW dated December 16th to fix some bugs https://watts247.com/manuals/mpp/Firmware/LVX6048/
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    Lvx6048 issues making it unusable

    Seems to be a lot of issues going around witht his unit! https://diysolarforum.com/threads/lvx6048-burned-up-on-day-1-searching-for-cause.53750/ I got mine from Watts247, and he's been pretty tight lipped about possible causes. Where did you get yours? I'm just wondering if its a bad...
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    LVX6048 Burned up on day 1 searching for cause

    My dad and I installed this LVX6048 Saturday afternoon. We could not get the WIFI to connect to the APP as the setup reported the WIFI module on the LVX6048 could not communicate with the inverter. All else was working well.--FYI--One annoying problem on these others have reported here is the...
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    HIQ batteries from eBay store--With UPDATES*

    I asked: 1. What is warranty time and how is warranty handled? Prorated or replacement and how long? What is process for Return of battery or approval to declare a defective and return? If battery does not meet the advertised capacity of 100Ah is it covered under warranty return? 2. Why does...
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