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  • Post in thread: Building Battery Box for my 24v, 200ah Lifepo4 Battery Bank

    This weekend, I started measuring and drawing up my battery box. The box will be nearly at floor level in my RV but it will rest on a 3/4" sheet of plywood sitting on 4, 1.5" square studs spaced about every 4-5" for support of the roughly 150 lb bank (16, 3.2v, 100ah lifepo4 CALB cells). The...
  • Post in thread: Battery Disconnect Switch OR Resistor?

    I received my resistor and pack of LEDs. I have installed on a 1-OFF-2 switch. The resistor is much further away from the OUT pole than pictured.
  • Post in thread: most durable inverters

    I am using an Aims 6000w 120/240 inverter/charger. It isn't 'Smart' but is stone cold reliable. ATS works great and no issues in the 2 years I have owned. I have 1500watts solar and if I get a few days of clouds and batteries get drained, it does a great job of 'refilling' off the grid and...
  • Post in thread: Battery Disconnect Switch OR Resistor?

    Thanks Skypower for a smart solution that fits my pocket weight $$$
  • Post in thread: 12v 1000+ AH?

    I would keep the SLA dedicated to starting/charging the vehicle. Separate from the lifepo4 battery bank/system.
  • Post in thread: Should I return my 24v AIMS inverter for a 12v AIMS inverter if rest of system is 12v?

    Be sure the intended inverter/charger can handle more than your current solar panel array at 12v. I found a benefit where I could increase total solar watts to 1700 (vs 1000) just by going 24v. I have the 60amp AIMS charge controller powering a 24v battery bank (200ah lifepo4) and running a...
  • Post in thread: Max CALB LifePO4 Battery Packs in Parallel?

    I agree about System Calibration. I have endeavored to identify all of the information about the different components in my system (from panels, MC4 cables, wire gauges, CALB Cells, BMS, Solar Charge Controller and Inverter). I am in process of pulling all of this info into one place and...
  • Post in thread: 2000 Watt (1500 Watt), 24v Off-Grid Solar Power System - 1989 MCI 102AW3

    I am using two BMS wired as 8s each. Each will balance a 24v, 8 cell pack.
  • Post in thread: Unistrut Installation - How Much Spacing Between Roof and back of Solar Panel?

    I am in process of purchasing four, 10-foot sections of unistrut channel. My plan is to secure two pairs of two, 10-foot rails in the 20-foot space between the rear and front access hatches on my bus (MCI 102AW3, 40-foot bus). I have a set of six (6) 3x6 SanTan Solar 270watt (250 effective...
  • Post in thread: Solar panels connected, battery bank disconnected

    In the instructions for my AIMS controller, they instruct to reverse the steps to turn system ON when turning OFF. That would imply following order to turn off: Turn all AC and DC Loads OFF on the AC and DC panels ß--IMPORTANT Turn the inverter OFF Turn the Blue Sea inverter disconnect switch...
  • Post in thread: 2000 Watt (1500 Watt), 24v Off-Grid Solar Power System - 1989 MCI 102AW3

    Since posting, I decided to increase the system from 2.4Kw to 4.8Kw. I ordered a second set of eight, CALB 3.2volt, 100ah cells. This will be my second 24v battery and will double my system from 100ah to 200ah. I also ordered a second BMS for this battery pack. Also, in meantime, I have...
  • Post in thread: Building Battery Box for my 24v, 200ah Lifepo4 Battery Bank

  • Post in thread: Building Battery Box for my 24v, 200ah Lifepo4 Battery Bank

    The bms is roughed in. I need to secure it then install the 2nd bms and attach the two packs in parallel.
  • Post in thread: Just Place new Order on Alibaba- 280AH x 8 for 1260.00 USD Delivered, Grade A to Canada

    My AIMS 24v, 3000watt Inverter/Solar Charger P/N: PICOGLF30W24V120V
  • Post in thread: 2000 Watt (1500 Watt), 24v Off-Grid Solar Power System - 1989 MCI 102AW3

    Agree. I am adding a 'Cellmeter 8' monitor to each 24v battery pack. This will augment the bluetooth app and provide a sanity check for readings. With my battery box essentially a 'foot locker', I plan to set up the box with the Cellmeters and BMS secured on top of rubber padding that is...
  • Post in thread: Max CALB LifePO4 Battery Packs in Parallel?

    Good idea and I may still wire to manage it all with one BMS. For now, I figured since this is my first DIY Lifepo4 bank and since I am paralleling them as two, 24v battery packs, I wanted to use a BMS for each pack (2 BMS). In future, if I double to 9.6Kw, I may re-wire the two BMS to...
  • Post in thread: Rooftop PV Panels - Resetting PV Breakers Restores Amperage of Middle String (3-strings of Panels)

    I may have resolved my PV panel power production issue. I found several articles describing 'hard reset' and pv breaker reset. I opted to turn the three DC breakers off for approx. 1 minute. I then turned each on, verifying production after each one flipped to 'on'. Since that time...
  • Post in thread: Building Battery Box for my 24v, 200ah Lifepo4 Battery Bank

    I looked high and low and came up empty on reasonably priced, ready made boxes that fit the footprint I wanted to put them in. I figured that since I am securing it to the (wall and) floor, I may as well build it to my specs. Will post the specs soon.
  • Post in thread: 2000 Watt (1500 Watt), 24v Off-Grid Solar Power System - 1989 MCI 102AW3

    It is a 16s BMS. However, the wiring diagram shows to use it as 8s, that wires from both 9-pin connectors on the BMS will run to the cells.
  • Post in thread: Tried Venus v2.90 to v3.21 on Raspberry Pi 4B - Appears to have failed

    After typing in the command above, rasp accepted. I then typed 'shutdown now' and it rebooted and I am UP on v3.12! Thanks! I applied same to my primary SD card so both are now on v3.12. Success!
  • Post in thread: Connecting up Six LiFePO4

    To keep all things equal, I would carry on the connection in parallel add the two 100ah batteries into the mix of 4, 100ah batteries in same configuration for a total of six. Do the Li time batteries have internal BMS?
  • Post in thread: Rooftop PV Panels - Resetting PV Breakers Restores Amperage of Middle String (3-strings of Panels)

    I have six, 250watt, PV panels on the roof of my RV. They are configured in 3 pairs (500watts each pair). Each pair flows to a Midnite Solar DC breaker (20amp, 150volt) in a combiner box. The middle string of panels drops amps. I will see the panels reach peak amps of about 52-54amps and...
  • Post in thread: 2000 Watt (1500 Watt), 24v Off-Grid Solar Power System - 1989 MCI 102AW3

    An update on assembly of my solar power wall in my MCI bus. I have configured my power wall that contains the SCC, Inverter, bus bars, DC converter (24 to 12vdc), 12v fuse block, in-line dc fuses and the three on/off switches for the solar power, scc power and inverter power. In the course of...
  • Post in thread: Purchased six (6) SanTan 250Watt PV Panels - Best Config Given My Charge Controller?

    Thanks. So, I will have two sets: three panels in series. 6 total panels. The panels are flat on the roof with direct sun until after 2pm when the sun begins to be filtered by tree canopy.
  • Post in thread: Aims 60amp Solar Charge Controller: How to Effectively 'Disable' Float?

    Since Aims only allows Equalization to be set to a value in range 20.0 to 29.2, what would you recommend it to be set to? It cannot be turned 'OFF'.
  • Post in thread: Assembling my 6P8S CALB Battery Bank (48, 3.2v, 100ah Lifepo4 Cells, Daly 500amp, 2/0 cables to Bus Bar)

    I am using ONE, DALY 500amp 8S 24v BMS. I will have eight, 3.2v 600ah battery packs. The packs will be connected serially. I am using 3/8" thick, 1" wide aluminum bus bars to parallel connect each 3.2v, 100ah cells in a pack of six cells. I purchased the aluminum bar from an American...
  • Post in thread: ANT BMS - Load Testing Week #2

    I just completed week # 2 of stress/load testing of my 5Kw CALB Lifepo4 battery bank connected to my AIMS 6000watt Inverter/Charger. Until Sunday all was well. Sunday morning, I went out to check the status of the system and found the inverter/charger was Alarming (constant tone). The...
  • Post in thread: Bluetooth for multiple ANT BMS in parallel

    I have two Ant Bms running. I have two, 24v 100ah CALB battery packs (8, 3.2v cells in series in each pack). The two packs are connected into my system in parallel. Battery cables to each pack MUST must be equal length (+ cables must match each other and the - cables must match each other in...
  • Post in thread: Aims 60amp Solar Charge Controller: How to Effectively 'Disable' Float?

    The Aims SCC offers a 'Lithium' setting with bulk only and 28.8V. The voltage cannot be altered. I was endeavoring to reduce by selecting 'Self Defined' as I found that, on those occasions when the system was so depleted that the inverter flipped to charging (while solar charging was...
  • Post in thread: Battery Disconnect Switch OR Resistor?

    In my current RV solar power wall, I use a 600amp blue sea rotary switch as a quick connect between the Lifepo4 battery and the rest of the 24vdc system (inverter charger, solar charge controller and secondary 24vdc charger). I turn the blue sea switch "ON" before I switch the Aims inverter...
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