diy solar

diy solar

Most reacted posts

  • Post in thread: LiFePO4 Voltage Chart?

    SOC V Cell My Limits My Limits My Limits My Limits 48V setup Self imposed Self imposed Self imposed Self imposed 12V Setup 24V Setup 48V Setup 100.00% 58.40 3.65 3.294 13.2 26.4 52.7 99.50% 55.20 3.45 99.00% 54.00 3.38 90.00% 53.60 3.35 3.277...
  • Post in thread: BYD Battery and MPP LV5048 Vid.

    Rosco gets a treat and I run my house off-grid with MPP-LV5048's and 8 BYD LiFePO4 batteries.
  • Post in thread: BYD BMS

    Conclusion: Molex Micro-Fit 3.0 430251000 10POS 3mm Molex Micro-Fit 3.0 or 1729521001 Micro-Fit TPA Receptacle Housing WITH Micro-Fit Terminal Position Assurance (TPA) Retainer Molex 4303000001 12" PRE-CRIMPED Molex Jumper Wires or Crimp your own wires Micro-Fit 3.0 Crimp Terminal, Female...
  • Post in thread: 280AH Cells ordered.

    https://www.alibaba.com/product-detail/LFP-Lithium-ion-Battery-Lifepo4-280Ah_1600128023170.html FYI, 64 cells in a 48V setup. 51.2V Nominal at 280ah = 51.2x280x4=57 kWh $5398 total, with trade assurance, shipping, everything. = $5398/57 kWh = $ 94.13 per kWh, DELIVERED.
  • Post in thread: SOL-ARK 15K is so pretty

  • Post in thread: As soon as I figure out how to hoist my panels up...

    And now with about 90% less drag. $6.00 worth of bearings from harbor freight.
  • Post in thread: Solar Assistant - data logger

    Compare this to WatchPower.? If you have an MPP-Solar or Growatt, SolarAssistant works for you. This is on a pair of LV6548s This is on a LV2424; (just one day of use) Sorry, there is no "public site" to view the site. No, SolarAssistant is not free. When you consider that WatchPower is...
  • Post in thread: (at least) 4 MUST HAVE tools for BIG Wire

    Hydraulic Crimper Cable Bender Ratchet Cable Cutters Cable Stripper These are 4AWG to 4/0 AWG. If you are doing 250 MCM, you probably already have professional tools. I prefer the 16T crimper instead of the 10T crimper because the 16T holds the dies in from both sides. I just did a project with...
  • Post in thread: Yikes! 99% of Lithium battery packs are faulty?

    I have used several different BMS's, and only 1 balancer. Balance is by far the most critical part of maintaining a healthy pack. "For the safety of your battery pack, balance and maintain the long life of cells, please make sure that your cells will use BMS!" Remember a BMS monitors many...
  • Post in thread: Solar panel disconnect?

    It's basically just a matter of convenience and what part of the circuit you are about to mess with. If you are up on the roof and forget to open the circuit, your only option is to pull apart an MC4 connector. If you had a cute little knob to rotate, then that is easier than messing with an...
  • Post in thread: As soon as I figure out how to hoist my panels up...

    Six up and six left to go. I had to use a couple of double pulleys and a pull string/cord.
  • Post in thread: Cheap 4kwh LiFePO4 batteries from Battery Hookup

    "ITS IMPORTANT TO HAVE BALANCING IF YOU PLAN ON FULLY CHARGING AND FULLY DISCHARGING. JUST SEARCH ALIEXPRESS FOR "8S ACTIVE BALANCER". OR YOU CAN USE AN 8S BALANCE CHARGER WITH THE BALANCING FEATURE. NOMINAL VOLTAGE IS 25.6V FULLY CHARGED IS 29.2V FULLY DISCHARGED IS 20V" Charging to 56...
  • Post in thread: BYD packs — one year on — survey

    All in all when it is said and done, I figure the BYD's are equivalent to about 80-100ah new cells. It's amazing what has happened to the price of new LiFePO4 cells this year. I have 64 new 280ah cells floating somewhere in the Pacific now. I'll be going from about 14 kWh to about 57 kWh, and...
  • Post in thread: LiFePO4 Voltage Chart?

    New cells, for all practical sense, none. Used cells, can drop in voltage considerably. When you turn on a microwave, the surge will drop the volt reading, and as soon as the current levels, the voltage will rebound just slightly. After the microwave turns off, the voltage will return to pretty...
  • Post in thread: Solar Weed Whacker

    Enjoy:
  • Post in thread: West Facing & Oversize or Battery Storage - What's Better For Time Of Use Rate Plan?

    double axis tracker wins every time in every situation for most energy collected (but is the most expensive also, and the tradeoff for just more panels wins) single-axis tracker (time of day tracker) is about 44% more energy than a fixed angle panel. Some single-axis systems can more than...
  • Post in thread: As soon as I figure out how to hoist my panels up...

    The sled is ready to go . My "helper" helping. I reused the wood from another project. The helper approves it. All the measurements are "screwed in place" to have a loose fit. I have about 1/8" play for side to side slop. I only used the tape measure to get the centers of the cross...
  • Post in thread: 320ah Cells Ordered.

  • Post in thread: Solar Assistant - data logger

    12K load on a pair of LV6548s. :) Just 184 amps on the battery. 48amp EVSE charging a Bolt EUV and running the rest of my house.
  • Post in thread: 320ah Cells Ordered.

    Grade B vs Grade A /start sarcasm But the seller says they are Grade A on AliExpress /end sarcasm
  • Post in thread: LiFePO4 Voltage Chart?

    It's OK that it doesn't make sense. It simply is the way it is..
  • Post in thread: Xuba 280ah Batteries, how to proceed?

    Since these batteries are all new and hopefully manufactured at the same time, it's possible they all have the same internal resistance. The newer ISDT can measure IR, but not the little BattGO. (https://www.amazon.com/s?k=isdt&ref=nb_sb_noss_1) The risk you face is having one cell that has...
  • Post in thread: Best BMS to use

    How many cells will be in the series? When you parallel batteries, they passively equalize to each other by being connected to each other. This is not the case for the series batteries though. I use a blue-tooth controlled BMS, it has all these functions: Cell High Alarm Cell Low Alarm Cell...
  • Post in thread: Help with 128 batteries each one is 280ah, and want to configure for 48v system.

    Sorry about that, I read the message and totally missed the title part. 8 x 51.2v x 280 ah = 114,688 or 114 kWh. You will basically have 8 batteries of 14 kWh each. (I have 4 in the same capacity ordered) I plan to make 4 sets of 16, each with their own Chargery BMS. I am putting all 4 sets...
  • Post in thread: I’m Selling DIY Kits for my Solar Clothes Dryer. Only $19.99 + Shipping.

    I won't give less than $300. I know what this is worth.
  • Post in thread: Can you see it?

    Out of the trailer, on the dock. Headed out to the beast of a truck with it's toy trailer. Off the trailer, and laid out on the ground. Promplty declaired "mine" by "Duque and Rosco".
  • Post in thread: Need 220 volts as well

    Do you have any idea what the start amps are to get the pump going? I found this soft starter. As far as I can tell, it is the only plug and play option available. https://www.raymondinnovations.com/
  • Post in thread: My Off-Grid panels going up real soon.

    The parts: (and links) 295w used solar panels (I've seen 248w from them already! They are polycrystalline, big and heavy, way overbuilt for residential use.) Ebay Superstrut Lowes Threaded rod hangers (Sammys 3/8-16 for wood) Ebay Sammys 8113910 - #14 Nut Driver Ebay Bolts to hold the...
  • Post in thread: $72 ANT BMS: Current Report by BMS is only half of the actual current

    If you are going to have more than one ANT-BMS in your setups. Do this 1st! Change the Blue-Tooth MAC Address (3rd page down at least). Just anything else will work fine. As soon as you get the next BMS turned on, you will be able to connect to it. The button on the main screen that shows...
Back
Top