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Google WEEB. I believe that will take you to approved grounding connectors for PV panels. WEEB are stainless steel connectors that have tiny spikes that puncture the surface of the PV frame and allow you to attach a ground wire. There may be a special paste to put down before using the WEEB...

Nice install. For 2.4kW of PV array to be over sized I would say you have pretty much mastered the minimalist approach to consuming electricity, if this is for your off grid residence and not a getaway cabin. If so, congratulations! I would need about 7kW to 8kW to support my lifestyle and I...

I think the charge controller ask too many questions and should mind its own $%%#%* business and get to work. At 900W of PV in a well designed system you should be able to "cycle" 1800Wh of usable power daily with a 25% reserve for recharging depleted batteries. 25% of your collected PV power...

I have a Morningstar PS-MPPT-40M and Samlex PST-3000W 24VDC pure signwave inverter. MODBUS is a fairly common communications protocol for the PV industry.

I just measure 4.8 milliamps from the 24V battery bank. I think I'll just feed the charge controller through the BMS. I need to read.

Yes, the Samlex is tested. My next step is proving the Chargery BMS will trigger the Morningstar RD-1 relay drive which will talk to the PS-MPPT-40M to turn it off. I almost have the bits and pieces.

I'm getting ready to roll my first Lifepo4 battery with a Morningstar PS-MPPT-40M charge controller, Chargery BMS, and Samlex PST-3000W 24V inverter. I pleasantly found out I can use PIN 3 of the Samlex to switch the inverter on with 4.8milliamps at 24V! Yippee! I can use the low current relay...

Very good. Its certainly free to try. The RD-1 has a maximum self consumption of <20ma. PIN 3 on the Samlex I estimate to be 750ma based on interpolating fuse size and voltage. I interpolated the 10v to 33v at a fusing of1A to be about 750ma at 10v. Current drawn would be maximum at the...

Batteries are fine on concrete, unless it creates a temperature issue. Through the 1960s many lead acid batteries cases were coated with creosote which protected the case from acid spills, but tended to provide some conductivity to ground. My batteries live inside.

I went to the CALB USA web site and clicked on an email link that sent a message to evlithium8@gmail.com. That email started correspondence with Tony Wang Evlithium LLC. RM 1611B 16/F HO KING COMM CTR 2-16 FA YUEN ST HONG KONG T: +86 0632 3966286 F: +86 0632 7653053 I was a bit surprised to...

I'm new to lithium batteries and am considering rolling my own off grid whole home battery bank consisting of 40ea CALB CA400 cells at 3.2VDC at 400Ah. CALB direct quoted $14,450 for 40ea batteries, 40A charger, 2ea 24VDC BMS, 1ea 12VDC BMS delivered to my door from China. The cost per Total...

I would like to remotely switch my Samlex PST-3000W inverter using some sort of "latching relay" or "bistable" that draws zero current when not switching. I have a Morningstar RD-1 relay driver that I could pulse voltage to toggle the state of the relay. I'm trying to avoid throwing away about...

The Chargery uses two relays. One to control the solar charge controller circuit and one to control the load circuit which is typically your inverter. The load relay is pretty much straight forward. Either use the peak current or battery fuse rating of the inverter. Go about 25%-30% over the...