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A few weeks ago I ordered a cheep Daly BMS as a backup for my 7+ KWA RV battery bank. I was surprised when it came in sooner (2weeks) after I ordered it! However I was even more surprised after opening the box that this Cheep BMS had a new Temperature Sensor… I’m not sure if it’s a High or Low...

Thanks BiduleeOhm... I’m an old Engineer (Electronic-Electorial) that has been interested in Solar Power for over 45 years. Love trying new things! Almost 80 now...?. I’m in Canada ?? now even though I’m an American? Got in because Wife is Canadian. Presently I’m in Quarantine for my 14 days...

Don’t worry... I have a set of SSR that control when the main is shut off and the Charge (C-) is turned on. Have tested it in the shop a dozen times. The SSR also acts as a diode so the main power out is turned off....

I used a Separate Port BMS for my latest configuration, but I’m wiring it as if it’s a Combined Port BMS so that if the BMS detects low voltage it shuts off the Neg Main current lead but allows the C- Charging port connected to charge the Low Cell! This also allows the Victron battery % charge...

Does anyone know if a BMS is advertised as 100 amp for LiFePo4 18650 is any different that one for LifePo4 for Prismatic cells? The cost is 4+ X higher for Prismatic BMS...

Have 6+KWH installed on my RV while priMarilyn charging is with solar. I did a good “bottom balance“ when I first installed the batteries about 2.5 months ago and there hasn’t been a single problem so far. Naturally I’ve checked them around 50 times to make sure all is good. Tried living in the...

A week ago I ran over an offer for 120ah aluminum prismatic LifePo4 cells for ~$46 each. I ordered 16 of them. The total cost was about $960 with everything delivered to my door. I got an message today with my FedEx tracking number? It will still take another 25-30 days before I get them because...

Okay, now that we’ve figured out the real use of the C- charge port when the BMS detects a cell overly discharged and turns off the load but allows the battery to be charged! It brings up another Question... Most of the Separate Port BMS only allow 8 amps of charge current? What happens when My...

So, if I’m reading this correct, you just didn’t hook up the C- port to anything? I’ll try that first before and see if my battery bank charges normally.... Thanks for the input!

Recently I purchased a few 4S Daly BMSs. Wasn’t until I received them (6 weeks later) that I realized they were Separate Port. I really must have ordered the wrong version. I was wondering if any of “you” have ever wired them as a standard Common Port. “ ie. Connecting the charge input (C-) to...

What is your final thought/decision on the BLS batteries? Good or Bad?

Has anyone bought LifePo4 batteries from BLS? If so, are they Good Quality or Crap?

I have a problem with the 2S2P configuration. If one panel in the 2S gets shaded, the output from that section drops to 1/2 voltage, Right? (ie ~18 volts) The other side still produces full voltage of ~36 volts. What happens at the Charge Controller with 2P inputs? The 18 volt is over powered by...

Can Hardly wait for Will To do the YouTube Analysis. Will do my own test and see if we both agree ?! Will adjust my configuration braised on the results! Thanks TCgreg for the Quick feedback! ?

Gnubie.... Thanks so much! My only question now has to do with the 2S2P configuration. Yes, all PV’s have bypass diodes but when one panel of the 2S is shaded and the bypass diode does its thing, the voltage from that leg drops to ~18V from the normal ~36V. Does that mean the other unshaded 2S...

Need help deciding!? Have been wondering how I should configure my four 120 watt solar panels on my new RV. Each panel when connected to the MPPT produces ~18 volts @ 6.67 amps. In Parallel that would be a maximum of ~ 26 amps @ 18 volts to the 40A MPPT. In Series that would be ~6.7 amps @ 72...

From the factory Sprinter Leisure Way (LTV) offers (2 x 100W =) 200W & (4 X 100W =) 400 W Flexible ? Solar Panels. I’ve opted not to use FlexPanels (they don’t last long... maybe 2-5 years) instead put 4 X 120W Monocrystalline Rigid Panels (last 25+ years) which cost ~$100 each. Yes, I did add a...

Thanks SVETZ! I knew there was someone out there that believes the same as me! One of your Threads was something I was worried about... Shadows! Never thought about the bypass Diodes! (As well as the Isolation Diodes). The new RV comes with 2 6v 280ah AGM batteries as House Batteries. Didn’t...

Have a new RV being built. Could have ordered it with Flex PV’s but didn’t think they would last long in Texas Sun! While designing (selecting components) I came up with a Thought? Could I hook up my PV’s in a parallel/series to 24v input to a MPPT charge controller formatted for 12v batteries...