Search results

  1. Terrapin

    could this devise deliver LiPo4 stored energy safely to a FLA on a camper Both "12V"

    Here's a link... other suggestions on what to buy to acomplish the same would be greatly appreciated as well. https://www.amazon.com/dp/B00K8OGBEC/?coliid=I1IDXCZ3875GM9&colid=14WOJFZS4KJJI&psc=1&ref_=lv_ov_lig_dp_it
  2. Terrapin

    It's about a month old but this YT vid is about Iron air batteries....

    Agreed in all aspects. and even if it just were any tech that cold be used by big energy it cold relieve the demand for lithium cell materials. That could result in a price drop given how production is a a decent level right now.
  3. Terrapin

    It's about a month old but this YT vid is about Iron air batteries....

    .... they sound too heavy for portable use in vehicles or mobil applications but holy cow chack out the energy density potential!
  4. Terrapin

    Will this device allow me to charge a 12 FLA from my 12V LFPO? (Time sensitive if anyone has a min. it would help tons)

    Thx. 3A could be a last ditch option. that other one was 15... that's closer to where I'd chose to be. Good to know that things like it will do the job.
  5. Terrapin

    Will this device allow me to charge a 12 FLA from my 12V LFPO? (Time sensitive if anyone has a min. it would help tons)

    Thanks for your opinion. I guess it's a question of if I'll get 40hr run time b4 it would croak. But as long as it will do what I need for that I guess I can look at reviews with that in mind...
  6. Terrapin

    Will this device allow me to charge a 12 FLA from my 12V LFPO? (Time sensitive if anyone has a min. it would help tons)

    @snoobler, hey bud. I had asked about how to use a 12v LFPO to safely charge a 12v FLA on another post. One reply said I would likely need a Booster built into the charger. I can't find who that was to ask them if this was what was needed so I reposted this a while ago. I realize you can't...
  7. Terrapin

    Will this device allow me to charge a 12 FLA from my 12V LFPO? (Time sensitive if anyone has a min. it would help tons)

    The link to the v1deo showing it is below. If there is a recommendation that could be a substitute of better quality at maybe 60 buck I'd probably go that route Just for the sake of a protective cased unit for travel. The purpose is to use a solar generators 280AH batteries to top off a...
  8. Terrapin

    Need help! 48 volt caught fire

    Oh man I am so sorry. This stuff is all new to me so I have no help to offer, just sympathy and thanks it wasn't worse!
  9. Terrapin

    Issues going lithium in motorhome

    I am in the same boat. Am am not certain if it is even a concern for you, but I need to make sure when I get around to installing the batteries and new converter that the wiring from the converter to the battery is of adequate sizing to run from the converter positioned above the trailer's...
  10. Terrapin

    A MUST SEE YouTube: "Off The Grid: Installing the Best New Lithium Batteries!"

    One of Wills (prob more than one) videos mentions pre=cherging the caps in inverters as small as 1500w with a ceramic resistor before attaching a LiFePO4 battery directly. I picked up a few small ceramic resistors for just that. They cost about 8 bucks, well worth the cost to just have one...
  11. Terrapin

    Let Will Know these cells from his website are no longer available for shipping to the US. plz.

    https://www.aliexpress.com/item/1005001936928381.html?aff_fcid=965b65d4953d470ea78df28f75ed4692-1621029984123-01146-_ABrXW3&aff_fsk=_ABrXW3&aff_platform=shareComponent-detail&sk=_ABrXW3&aff_trace_key=965b65d4953d470ea78df28f75ed4692-1621029984123-01146-_ABrXW3&terminal_id=d38dd8010108429fa150586b...
  12. Terrapin

    420Ah Cells on Aliexpress!?

    Read the replies above...I think your answer is already here. Capacity and quality exaggerations are rampant on aliexpress and alibaba. I wouldn't be the first to gamble on these....
  13. Terrapin

    Need recommendations for proven Battery protectors, 12V adjustable low voltage shut offs.

    I was just about to pull the trigger on a Victron Smart Battery Protect 220A. I figured I'd jump on and see what others here thought about other options. Thx
  14. Terrapin

    420Ah Cells on Aliexpress!?

    But the cells got bigger to do it... these are not larger. So.....
  15. Terrapin

    Another Cell Compression Thread, this time about foam

    All of these suggestions of different flammable foams seem confusing too me. Silicon nonflammable baking sheets just seem like the perfect nonconductive, corrosion resistant, cushioning as spacer/shock absorbers for between the cells...
  16. Terrapin

    What if I don't use a BMS at all?

    This is my plan for running my microwave that may require 180A to the inverter by bypassing the 120A max of the BMS. But as stated, you now own monitoring for low voltage. But also info available regarding the capacity of the battery on smart BMSs like the overkill will not reflect watthours...
  17. Terrapin

    Original EVE LF280 cells?

    If you had the charge source leads at one end of the parallel set for top balance the cell closest to the leads can take more of the available charge. I saw a constant, but small drop down the cells as they were farther from the leads when I charged like that. I went to connecting the leads on...
  18. Terrapin

    420Ah Cells on Aliexpress!?

    LMBO "Lithium iron shell", unheard of energy density....And a new chemistry matrix that will not be harmed if charged at -5 Celsius (23F).
  19. Terrapin

    Awesome customer service from Alibaba Amy Wan

    Links from wills site for stuff are where he get some spiffs. I ordered fortune cells, wires, connectors and things like that from links there to be sure and help where I could afford to. I agree and encourage people to do the same.
  20. Terrapin

    Isolated VS non-isolated dc to dc chargers, what's the difference/use of each?

    Not much to add as far the question in the topic. It's pretty much the last stage of the trailer set up. I plan to use the unit to charge a 100ah trailer battery from a 280 AH solar generator. And potentially use the truck charging system to charge the solar generator if needed. Shopping led...
  21. Terrapin

    Using a 280ah battery to charge a 100ah... what devise is needed?

    Nice. I need to research this now... It seems very affordable to even go with a little higher charge rate :)
  22. Terrapin

    Using a 280ah battery to charge a 100ah... what devise is needed?

    TY for those other ideas, I will look into the Renogy DCC505....Regarding this. Untill I can afford a second 280ah, that will full time in the camper after a rewire to a new location and support for the 2200w inverter and new converter I have to support the charging paralleling is on hold. Till...
  23. Terrapin

    Using a 280ah battery to charge a 100ah... what devise is needed?

    TY that is not on my radar yet. Off to the search window for me...
  24. Terrapin

    Inverter overload? Why? (Giandel 2200W)

    Yike's I will be running the same inverter this summer for the first time. But it won't be off a charging battery. Please let me know what you learn. What was the load when it failed?
  25. Terrapin

    Using a 280ah battery to charge a 100ah... what devise is needed?

    Interesting, Thanks. I did not know that the MPPT requires a higher source voltage. The resistor isn't as appealing as it seems it would create waste across the entire charge cycle. I don't understand the difference in operation of either solar charger. But I think I have read that the MPPTs...
  26. Terrapin

    Using a 280ah battery to charge a 100ah... what devise is needed?

    I am working off the idea they will always be in very different states of charge. The Lichens always topped off as an independent solar generator that feeds the shore power cord by inverter at very rare high demand times and the fortune powering house usages daily.
  27. Terrapin

    Using a 280ah battery to charge a 100ah... what devise is needed?

    I have built two batteries. One 280ah for mobile storage that can be used in the house or as additional storage for camping. And the second that will be used as a drop in replacement for the campers FLA I went with the more jar resistant fortune cells for this application. Space limitations are...
  28. Terrapin

    I am always fantasizing about having a energy efficient air conditioner for van life, anyone seen any concepts in tech news or anything?

    Someone doesn't get the idea of those one hose portables exhausting room air.. they even pass that air thats being blown out through the drip pan area to evaporate them so they don't need emptying as often. But all that aside There is a guy on YT that did a van camper build. He used a window...
  29. Terrapin

    Marooned in the desert

    This is everything! many including myself bought elements not needed or inadequate. But plan on what the future may reasonably hold as well. If you give people here, who are way smarter than I, the actual watts of the appliances, and the actual run times, and the max amount of days you will be...
  30. Terrapin

    Are multi-stage charging profiles a real thing?.....

    Wow such a great bunch of descriptions Thanks All. I have a better grasp of what he is saying and why. But especially why it did not fit all the cases I know of and how marketing speak translates into what is actually happening. @smoothJoey your description fit perfectly explaining what...
  31. Terrapin

    Smallest Mini-Split?

    NICE!!! You would think there would be a lot more of companies making these types. But that would assume an informed consumer base.
Top