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  • grounding ac and dc system on a electric propulsion sailboat ?!

    hi, I have questions about grounding/bonding. I am getting ready to install my victron 48v quattro inverter/charger, I have a 280ah 48v eve pack and a 20kw electric motor. I plan on doing my charging solely by solar and a honda suitcase generator that plugs to the victron charger. How and...
  • Trouble sizing my charge controller...

    Hi! I am building a 24V system and bought 4 LG Bi-Facial panels but I am having issues trying to decide which on to buy. You could say im a bit of a beginner in bigger sized system. I only worked on a 300w 12v van system before The Panel specs are Peak Power: 520 Wp Voc (V): 49.8 Isc (A)...
  • Charging issues. Low voltage LiTime batteries

    Charging issues. I have a diy electric sailboat and my main battery bank is a diy 48v 280ah and works and charges fine. My backup bank is 4 -100ah litime that makes a 48v bank. I checked the backup bank today and the voltage is 51.2v and it won't accept a charge. My victron mppt jumps at...
  • AGM battery bank "bubbling" noise

    Hi I have a 1.1kw battery bank that consists of 8 12v 141ah C&D technologies UPS batteries. They are wired in 24v. They always "bubble" when they are close to fully charge and in absorption mode on my Victron CC. I read online that the only thing that makes agm batteries bubble is overcharging...
  • MC4 wiring and combiner box questions ?

    Hi, I have 4 panels going to a Victron 150/60 CC. the panels are 90ft from the CC. I am thinking of putting a eco worthy 4string combiner box close to the panels. Do I need mc4 connectors from the combiner box to the cc. if not what kind of wires ? My Panels specs are below. And is a combiner...
  • Different panels question

    Hi, We have a victron 150/60 scc and two 400w Lg panels on our boat. My question is, if I had 4 renogy flexible panels to add to my system. Is it safe to add a busbar that combine the two strings together at that busbar before going to the victron scc? Or do i neet to add another different...
  • Final wiring diagram prep, please confirm I am doing it right !

    Hi folks, I am getting ready to start wiring my system and I just want to double check if I am doing it right. If you have any advice or warning please let me know. I am still a rookie in this solar world ! 4 LG Bi-facial panels wired in 2S2P. ( Voc (V): 49.8 , Isc (A): 13.29, Vmpp (V)...
  • smart daly 250a balancing concerns...shenzhen luyuan matched cells

    Hi, We have a 16s 280ah eve cells battery bank for a electric sailboat. I bought them from shenzhen luyuan (amy) and they were balanced and everthing looked great but now after about a month of usage, I notice my daly smart bms shows the cells (always cell number 2 that is the highest voltage)...
  • choosing the right bms ?! 48v 280ah system

    Hi everybody, I am in the process of starting the install of my 16 EVE cells to make a 48v 280ah bank for my electric propulsion sailboat. I am having a really hard time finding a good reliable bms that is 250a. The only one I can find is the Daly. Do you think it is reliable enough for a off...
  • 2 separate chargers plugged into generator to charge bank ?

    Hi, I have a 15kw 48v bank with a 20kw electric motor that I usually operate a 2-3kw. I bought a 4kw generator and I charge my system with a victron quattro 35amp charger. Can I add a eg4 18amp charger to the generator to help charge the bank while also charging with the victron ? Or will...
  • Please any help ! 24v 4 Lg panels...wiring diagram difficulties

    Hi, I am installing my solar this weekend and I am not sure on a a few things. I have 4 LG-Bifacial 400w Voc (V): 49.8 Isc (A): 13.29 Vmpp (V): 41.6 Impp (A): 12.51 going to a Victron 150/60 Would it be better to wirer the panels 2s2p ? or just series ? My panels are around 50ft from the...
  • 48v 20kw electric motor conversion, a little overwhelmed to what cells to buy from alibaba. any help or tips?

    Hi, I am researching to build a 48V 300-400ah battey bank from diy cells. I have been watching will prowse for years but I have never actually built a diy pack. Any suggestions to what cells to buy ? I am looking at the Litikota 280ah cells but I have read a post about not exceeding 200ah per...
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