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  1. Danny

    Hybrid LifeP04 - FLA advice

    Look at the blue sea latching relay ml-7700 below
  2. Danny

    Hybrid LifeP04 - FLA advice

    Thanks for all the comments. This opens up a new world of possibilities. I’m using a Sterling bb1260 but I was thinking about an intelligent way to parallel my FLA. I have done a few videos on this ml-7700 latching relay that can be used for this application I think. . I also dis covered I...
  3. Danny

    DIY Battery monitoring system based on ESP8266 with cloud display

    Maybe a bad lin. It says SPL-Booster: the Swiss-Army-Knife-for-Sound-Pressure-Level Meters
  4. Danny

    Owner-Builder DIY, Enphase, Iron Ridge, Florida

    I have done several videos on my Enphase IQ7+ / Ironridge / California Permit / Main Panel / labeling / troubleshooting / testing / tax. Here is my playlist https://www.youtube.com/playlist?list=PLCal7Co3mAHSR5tg48M8NGKBcjBso8Wle
  5. Danny

    Developing own BMS

    I like the ads1115 here is a 4 channel i2c breakout. 16 channel on one bus https://cdn-learn.adafruit.com/downloads/pdf/adafruit-4-channel-adc-breakouts.pdf
  6. Danny

    Lithium Charging w/alternator

    Thanks. Great explanation. I’m afraid of paralleling my 200a FLA and 150A LiFePO4 over a 6awg wire I’m using to switch my solar charger to charge the FLA and LiFePO4. What rule could be used the safely parallel the banks? My LFP bank is normally at 13.4 90% SOC for me and FLA maybe 12.5v 95%...
  7. Danny

    What about using lithium for starting

    With sbms0 you can decide to keep your battery always connected on shut your charge /discharge sources down and I will have a auto battery switch that will shut off my house bank as a backup fail safe for house. I’m just afraid of depending on a home built battery pack to start my engine until...
  8. Danny

    Lithium Charging w/alternator

    I have a Balmar 100A alternator and my MC614 only lets the alternator run about 40-50 amps of long periods of time because of alternator overheating. Yes. I can run 70A for a short period of time. I also have issues with a narrow alternator belt and strain on my water pump so running high output...
  9. Danny

    Lithium Charging w/alternator

    It may make sense to keep your lead acid charging systems and add a DC DC charge. Then you can slowly migrate to LFP after you know how/if everything works. Here is my current system that is migrated.
  10. Danny

    Shenzhen Luyuan Technology Co., Ltd. Discussion Thread

    for balancing. Also check this out https://diysolarforum.com/resources/top-balancing-lifepo4-cells-using-a-low-cost-benchtop-power-supply.65/ . @FilterGuy is a very trust worthy source for info.
  11. Danny

    Shenzhen Luyuan Technology Co., Ltd. Discussion Thread

    Here is my balancing video. I think most would a agree that you should top balance in most situation. Will also has a video.
  12. Danny

    DIY Electrical for Solar Installation Detailed Main Panel Testing with Enphase Microinverter Q cable

    Some wiring details and testing I did to prove to myself that the wiring was good before the panels and microinverters were installed. I use a voltmeter to test stuff out and show what a normal system looks like from a voltmeter perspective. I also propose testing of the Q cable. This is for...
  13. Danny

    ElectroDacus 4S 12 pin connector Wiring on RJ Energy

    I'm documenting my install of the very thin ribbon cables. I'm using heat shrink adhesive lined terminals. Will also did a video.
  14. Danny

    Simple? Blue Sea ML-RBS ElectroDacus BMS Driver Circuit Experiment

    I just made a discovery. The Blue Sea ML-RBS 7700 only takes 7mA of current on the signal wires. It is the red wire that takes all the current. This means that most optocouplers can drive these circuits if they have 10ma available. Here is my video of the testing I did.
  15. Danny

    Reasons to avoid cheap Amazon DIY grid tie inverters

    The The system was for my house and was Enphase. Here is where I look at the option of paying a small amount more for the IQ7+ Enphase. Many people don’t agree with me on the value of UL. I needed to create this follow up video to pitch an alternative UL system. . Sorry another video.
  16. Danny

    Simple? Blue Sea ML-RBS ElectroDacus BMS Driver Circuit Experiment

    Another Blue Sea ML-RBS Circuit Experiment. In this video, I make a modification to the very simple and brilliant SY Destiny circuit in order to interface with the ElectoDacus TLP187 Optocouplers 150ma max. I needed to use an off the shelf $6.00 12v 4 x relay module triggered on the low side...
  17. Danny

    24V to 12V buck converter with ON/Off

    I forgot to add. If you just want to use the Sterling ultras as power supplies then they have power supply mode you can put them into and they can stop being chargers and be "dumber" like a buck converter.
  18. Danny

    24V to 12V buck converter with ON/Off

    I only like chargers / buck converters that you can regulate charge rate and have a voltage sense wire. The Pro Batt ultra series has a BMS1 and BMS2 input that I use to stop charging. With a VSR and my BMS. Here is a video at 2:00 that shows my charger . Here is a list of chargers...
  19. Danny

    Xantrax TrueCharge2_20Amp w Battleborn Lithium

    I forgot to mention I am using a Xantrex TC-2 40A to charge my LiFePO4 but with a Sterling BB1260 DC DC converter . https://www.sterling-power-usa.com/SterlingPower12volt-12volt-60ampbatterytobatterycharger.aspx . It is not good to drive the TC-2 over about 80% or the lithium will kill it. That...
  20. Danny

    DC to DC Voltage Converter

    You need to look at the specs of the equipment always. You can generalize about things but you need to absolutely know before you power these up. Here is a list of good DC-DC chargers. I have the BB1260 Click on the one you are interested in and look at the specs. I would not recommend running...
  21. Danny

    Xantrax TrueCharge2_20Amp w Battleborn Lithium

    Don't. Get a proper charger that supports your chemistry.
  22. Danny

    What about using lithium for starting

    I think I will always have a $100 Costco Group 27 to start my Yanmar 3gm27 motor. There is a lot that can go wrong with BMS / relays etc that can cause your engine not to start when you are close to the rocks. I can start my motor with both lithium and SLA but the SLA is my insurance policy in...
  23. Danny

    Giandel 1200 watt inverter spec

    One possible way is to turn off the inverter by the on off switch with a voltage sensitive relay at about 3.2 vpc. It is best to but an inverter with remote on/off built in and then get a Voltage sensitive relay / BMS to drive it the way you want. What follows is not recommended for most people...
  24. Danny

    Time to go Lithium Ion on Sailing Catamaran

    Here is the FB group for you if you don't already know about. The people in the FB group super knowledgeable. https://www.facebook.com/groups/427372107686109
  25. Danny

    DC via Direct Burial Romex

    Yes. I really like Mike Holt but they do police their site. I learned so much from that site. Here in LA I think DC need to be in conduit in the attic. If you are thinking about permitting like I did I just went down to the City and talked to the inspector even before I pulled my permit so I...
  26. Danny

    DC via Direct Burial Romex

    The NEC code is the minimum safety level I want . The nice thing about conduit is it allows you to pull more wires at a later date. The conduit costs is pretty cheap for that short run. I'd put a pull string in conduit / leave some unused wire for future.
  27. Danny

    DIY PV Cable?

    see the 4:00 min section of the video below for the process I used on my boat. This is for the outdoor part of the project. The battery wiring can be done with other wires. I use marine cable because it is far more flexible than residential grade THNN that is needed for the longer runs I put in...
  28. Danny

    DIY PV Cable?

    I have used marine wire on my boat. It is far more flexible. I would stay away from welding wire outdoors. Look up the difference between tinned wire and other types of wire. https://www.genuinedealz.com/10-awg-gauge-2-conductor-marine-wire-duplex-flat
  29. Danny

    Victron Smartsolar Charger Remote On/Off

    I"m working on making my own ve.direct cables with this schematic. Looks like I just need to turn on the rx pin to monitor the BMS enable / disable.
  30. Danny

    LiFePO4 at dock

    I have a on off switch to turn LiFePO4 off at the dock and I run my FLA battery at the dock and keep my LiFePO4 at at 50%-40% SOC with FLA charge on. When I get ready for a trip I charge the LiFeP04. See video time 8:05.
  31. Danny

    Interesting new way to crimp cables.....

    I have been using this one for over 1 year. https://www.amazon.com/gp/product/B077VGG18B/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
  32. Danny

    Project where I migrated to Lifepo4 4S on my house bank

    300ah ship Los Angeles 4s. Grade A
  33. Danny

    Blue Sea ML-RBS 7000 Simple DIY Latching Relay Driver for Lithium BMS by SY Destiny

    The circuit is all passive non mechanical. Latching relays on take current to change state BUT they need a pulse to switch them. Most relays and BMS don’t pulse. BMS systems use mosfet or relay based outputs than may connect to NO/NC relays or contactors. Adding a led diode, capacitor and a few...
  34. Danny

    Blue Sea ML-RBS 7000 Simple DIY Latching Relay Driver for Lithium BMS by SY Destiny

    SY Destiny has published a Simple Latching Relay Driver Circuit schematic that he has been using. I used a bread board to test part of the circuit and I am trying to understand the circuit with Blue Sea ML-RPS 7000 and 7702. I welcome any comments. This circuit has been know to work with the...
  35. Danny

    Top Balancing

    Here is my latest top balancing video using the parallel step method.
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