diy solar

diy solar

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  • Post in thread: Sailboat solar equipment list Feedback plz?

    Needs and wants. You don't NEED the Cerbo, Smartshunt, BMV, or display. You _should_ have some way to monitor the state of charge of your batteries. Noting that Dakota doesn't provide a bluetooth app for that as some others manufacturers do. That can be either the Smartshunt, or the BMV, it...
  • Post in thread: Instant messaging (whatsapp/telegram/etc) rant. Am I alone in this one?

    There is a lot of fighting and harmful results from people saying something and immediately regretting it and wanting to take it back. The opportunity to take a moment and think, "oh, my I need to delete that" isn't a bad thing. It would be better for people to take that moment before saying...
  • Post in thread: 300Ah build for a sailboat.

    One interesting observation, the included bolts had blue locktite pre-applied. It makes it difficult to properly torque as they go in pretty tight.
  • Post in thread: Victron BMV-702 battery capacity question

    If you want a deep dive into setting all the options on the BMV, read this. Warning, it might hurt your brain. https://marinehowto.com/programming-a-battery-monitor/
  • Post in thread: Retail batteries, how do they do it?

    I suppose part of it is that compression will prevent or hide bulging cells, which could be a warranty claim even if they still work perfectly. In a sealed case where the cells are not visible, that becomes less of an issue. Nor does it matter if the battery lasts as long as the warranty before...
  • Post in thread: Let's find out what ChatGPT AI thinks

    Pretty much.
  • Post in thread: What's the best BMS?

    Inspected and tested before shipping, and with a decent warranty. You can get the "same" BMS from other sources, but there are multiple versions that are very similar, and if you order from Alixxx and don't get what you expect or it fails you are SOL. Even being inflated, Overkill solar isn't...
  • Post in thread: Calculate amps through each bus bar?

    Currently in Norfolk Virginia. I left San Francisco in 2018, and will complete my circumnavigation next year. Boat is a Morgan 382. If going the flexible route, that's fine. But your drawing shows 2 wires connecting 2 bus bars together. Don't do that. Only have one electrical path to connect 2...
  • Post in thread: Overkill / jbd PCB limiting SOC

    Have you changed any of the values in the Overkill? IIRC, the default values are on the high side, well over 3.65V per cell. The reasoning being that the BMS should not cut off charging, the charge controller should. So only if the charging had a malfunction would the BMS disconnect. At the...
  • Post in thread: Crimp Alone -vs- Crimp + Solder

    I can relate my personal experience, in a high amperage no vibration installation. One of my first electronic tech jobs, I was maintaining high powered Television transmitters. The transmitter had a total of ten 50A DC supplies. Very simple, just a transformer, large rectifier, and some filter...
  • Post in thread: Batteries in the engine room

    I get that. But in a given boat, in fact many boats, there may not be a need for more than 30A (a typical dcdc charger to the start battery) So instead of spending extra money on a a more complicated electodaucus, you can choose something else. That's why you evaluate your needs first, then...
  • Post in thread: Let's find out what ChatGPT AI thinks

    That video is a great example. AI only does what it is told, and people are learning how to do that.
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