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  • Post in thread: Installing LiFePo4 cells on the narrow side

    I have been through this and this subject is as bad as politics. People have said it is fine, people say absolutely no as the electrolyte will not cover all the plates if mounted any other way than up, some say the case is to thin and will deform, some say you are fine anyway but upside down...
  • Post in thread: What are all those blue LiFePO4 batteries

    They actually are different. this thread may help. https://diysolarforum.com/threads/noahs-ark-index-of-lifepo4-cell-manufacturers.9759/
  • Post in thread: Hot wires!!!

    Resistance with the circuit breaker is a possibility. They can be defective. Bypass that breaker for a test and see if it runs cooler since you state past the breaker is cool.
  • Post in thread: WOW! Absorption fridge vs compressor fridge

    Blame your dealer not GD. Batteries get added at the dealer as part of prep not at the factory. I have a 303rls (Absorption fridge) and GD specifies a minimum of 1 group 27 for reflections . I believe any units with residential (compressor) fridges they specify a min of 2. On the...
  • Post in thread: are these 280ah cells worth this price??

    Send Michael a private message . That is the fastest way and that way he can keep track of your specific message string. Just ordered some earlier this weekend from him. Note due to Chinese New Year holidays nothing is going out of China right now...
  • Post in thread: Battery wiring question

    Yes. All wires equal length to the buss bars this way everything charges/drains equally. I just got done paralleling 4, 12V batteries just like this.
  • Post in thread: WOW! Absorption fridge vs compressor fridge

    I do. Who wants to spend thousands of dollars on oversizing solar panels and huge costly LIO battery banks in an RV when a propane tank works great. I want to be efficient not be purely solar friendly and $ foolish.... There is NO such thing as a free lunch. (or free solar system for that...
  • Post in thread: Wiring of solar panels to mppt controller question

    Yes, the controller will handle either configuration
  • Post in thread: Does series/parallel need to perfectly factor number of panels?

    The issue is not the panels themselves but the way the solar controller works. Your best option is multiple controllers instead of one larger controller. Multiple controllers can feed a battery for charging. Think of fit this way, once you start paralleling it is just like putting battery...
  • Post in thread: Need assistance. Renogy 3000w inverter tripping internal GFI with Air Conditioner

    Unfortunately I am on a hard wired port and the GFCI is internal circuits
  • Post in thread: Overkill bms setup queries

    I will second @wholybee . I am using 150ah cells and am on about 24 hrs now of parallel charging 4 batteries together to top balance. I started at 3.291v +/- .001v. The cells are now at 3.360 +/- .001 so I a getting closer but not there yet. That is with a cv/cc ps set at 3.65v/ 10a...
  • Post in thread: HQST solar controller

    Ok, here is the manual from the manufacturer (not HQST) https://www.srnesolar.com/wp-content/uploads/2020/11/MPPT-Solar-Charge-Controller-MC2420.pdf First off the per page 10 (or page 6 as you view the PDF) the first LED is charge state. If solid it is in bulk charge mode. 2nd LED gives state...
  • Post in thread: Need help to size a BMS for either 2 x 12v 280Ah or 1 x 12v 560Ah

    You need to calculate your draw. Lots of websites out there where you can estimate what each item will draw power wise inside your camper. Will you be running an inverter to power AC voltage items like a microwave or coffeemaker? Those will be your big power draws. You need to concern...
  • Post in thread: Need help to size a BMS for either 2 x 12v 280Ah or 1 x 12v 560Ah

    Correct. Your BMS should be based on constant usage need (read discharge rate on BMS) with ability to handle peaks of usage, NOT total usage over time that is capacity of your batteries ( in your case 540ah). If you never draw more than 1500watts at one point in time your BMS continuous...
  • Post in thread: Need Help With Additional Components for LifePO4 Build for Small RV

    And that is your opinion.... I will stay with propane when not on shore power. Most (but not all) typical RV-propane style fridges work better on gas than electric from my observation.
  • Post in thread: Need assistance. Renogy 3000w inverter tripping internal GFI with Air Conditioner

    https://www.renogy.com/3000w-12v-pure-sine-wave-inverter/ thanks
  • Post in thread: Renogy Closing?

    I bought solar panels from HQST (which is a sister company of Renogy). Honestly, I believe many of the products are the same just branded HQST or Renogy). I had a broken panel. Email response was typically 24 hrs but replacement product took 3+ months due to everything coming form China...
  • Post in thread: Need assistance. Renogy 3000w inverter tripping internal GFI with Air Conditioner

    Bud, thank you. Due to family obligations it may be a couple days before I can take measurements. I am an EE so , yes, I do have a proper volt meter and do understand the difference between growing and neutral, etc. my gut says it might be overload as you mentioned and could put a soft...
  • Post in thread: Need assistance. Renogy 3000w inverter tripping internal GFI with Air Conditioner

    I was able to resolve my issue by putting a soft-start on the AC unit. It was overcurrent.
  • Post in thread: 4s4p 12v BMS options?

    Buy JBD bms’s from Aliexpress. I am building the exact same setup only with 16 150a cells. Bought 4 120a jbd bms’s for under $60us each. Run the 4 packs in parallel. That will give me 480 amps output with I hope I will NEVER need . This allows me the ability to pull a pack out easily if...
  • Post in thread: Wiring of solar panels to mppt controller question

    Hi, I have qty 6 100w hqst mono panels that will feed a 50 amp mppt controller to 12v batteries. The controller is a 100v open panel voltage. The panels will be mounted on the roof of my 5th wheel camper. We often camp in wooded areas not open fields with full sun. So, my question is...
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