diy solar

diy solar

Recent content by amaclach

  1. amaclach

    LiFePo4 battery transportation under usage?

    Hi @JohnnyBravo I have a LFP offroad setup and it works fine. Just make sure that you buy a quality battery. I have a pair of Relion 50 Ah batteries and they have suffered no ill effects from offroading, however, I strongly suspect that they are suffering from heat stress. It gets very hot here...
  2. amaclach

    Maximizing Alpicool AC/DC 26Q/25L fridge run-time..

    From my personal experience, a similar sized fridge and similar battery capacity, your runtime is about right. I don't think you will improve that. To last a week, you'll either need to increase the temp in the fridge (at the risk of spoiling food) or get more battery capacity. Sure you'll find...
  3. amaclach

    Maximizing Alpicool AC/DC 26Q/25L fridge run-time..

    That will be pretty interesting...
  4. amaclach

    Maximizing Alpicool AC/DC 26Q/25L fridge run-time..

    Yikes... All I can suggest is using the fridge as a beer/drinks fridge? Just to keep it running & chilled. Can you build external LFP batteries for the Inergy, or build a giant milk crate system like what Will did on his youtube channel? The R600 Pro from Ecoflow is a good unit - LFP based, and...
  5. amaclach

    Estimating charging efficiency of alternator vs generator

    For heating, a diesel burning webasto unit can dual heat water and air, and be mounted under the vehicle - AND it's a LOT more efficient than burning diesel to charge batteries to run an electric heater. For the cooker, you can get petrol hobs - again - very clean burning (like any burner, you...
  6. amaclach

    When not to neglect the resistance of a car body

    Agreed. It it ain't broke, don't fix it. The only benefit that you would get would be fewer losses, but if you are happy right now, then you should be good to go. I have a 12v compressor mounted in my engine bay. It draws about 30A. The manufacturer recommends NOT to earth it to the body. it is...
  7. amaclach

    Super capacitors are a horrible choice for solar. Change my mind

    But wouldn't flooded lead acid be better (cheaper) than super capacitors for temporary drawdown surge? example - I want an espresso machine in my truck and it wants to pull more amps than my LiFePO4 can supply for the 30 seconds it needs to run, so the surge pulls from the FLA (then charges back...
  8. amaclach

    Estimating charging efficiency of alternator vs generator

    Wow... Might I suggest having a look at a couple of youtube channels by people who are VERY experienced in expedition type travel - Dan Grec's The Road Chose Me https://www.youtube.com/channel/UCkyky5zC8R1Gi6YeeCR6BDg , and Andrew St Pierre White's 4XOverland...
  9. amaclach

    When not to neglect the resistance of a car body

    I have no issue with your work, I'm simply stating that the return path for high current applications would be preferable via an appropriately sized copper conductor rather than the vehicle's steel body or chassis. I think we all agree on that.
  10. amaclach

    Maximizing Alpicool AC/DC 26Q/25L fridge run-time..

    Different fridges have different power consumption - This is a well documented fact. Maybe the Inergy's battery is not upto snuff, maybe the inergy is drawing too much power for its self management, maybe the ambient temperature is higher. Maybe the lead from the inergy to the fridge is too...
  11. amaclach

    When not to neglect the resistance of a car body

    Also remember that steel is not a great conductor - nowhere near as good as copper wire, you will see losses using the steel bodywork for the return path. Electrical conductivity in metals is a result of the movement of electrically charged particles. The atoms of metal elements are...
  12. amaclach

    Use your car as a backup generator??

    A starter battery can deliver immense amps (because that's what they are designed to do) over a relatively short period of time. The alternator has to be able to sustain the current though - hence my recommendation of using a clamp meter to measure current at various points. example - if you...
  13. amaclach

    Use your car as a backup generator??

    You'll need to know how much current the alternator can supply at idle with load on the electrical system (e.g. and inverter running). Smart alternators will de-rate as they warm up, so current just after starting is higher than if the engine has been running for an hour. The rating of the...
  14. amaclach

    Need 220 volts as well

    I've just asked if this will work with a fridge/freezer. It's certainly a lot cheaper than a bigger PSW inverter...
  15. amaclach

    Refrigerator for Vehicles

    At the end of the day, you don't have to validate performance against other brands. Only 3 things matter: 1) The device performs adequately in the intended environment 2) You have enough battery & solar to power it 3) It's reliable. An Engle might not have the raw performance or efficiency of...
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