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I have a small 4 panel string that Voc is 66V. When a load happens (charging batteries, discharging to car) the panels voltage on the SCC drops to 37V. The other SCC with similar panels only drops down to 55V which is closer to what it is supposed to be. I thought it was connections and changed...

I was doing maintenance on my setup and wanted to see if I could run with the higher output into my EV so I cranked the input of the EV to 12A at 120V to see how everything would work. While investigating the system for any hiccups and such, I noted it was really quiet. Both fans on my inverter...

I am moving my setup at the end of the hot season from my back screened in porch to inside my garage. Beyond any cable adjustments and using backer board on the walls, what are other things to look out for? Also, since I am in the garage and the house grounding pole is there as well, is...

Just got my torque adapter to properly torque down my terminals on the newest battery. Here it is with a load before torque: Then all terminals were torqued to 5Nm. Delta doesn't bounce by 20mA either and stays well within my tolerances. Torque your terminals please.

I have two batteries in parallel on the same buss bars and only one appears to be discharging at all. If I turn off the discharge FET from the first battery, the load shifts to the second. Is this normal?

As long as both battery positive leads go to one fuse meant for catastrophic failure, that should be fine yes? I want in the event of a massive short for the fuse to shut down everything. I have breakers inline as well properly rated, used as maintenance switches mostly. Thoughts? I remember...

I have 4 3ft by 5ft hardi boards I want to make into an enclosure. I know I need some additional structure and insulation as this sits outside on a concrete pad in AZ. I have room to go 3ft wide by 5 ft tall. Will be housing the batteries, inverter, and SCC.

Since I had some spare power in the battery, I decided to give it a test of what I would consider max output. 65A to charge my car. Tested and it started fine. Set a timer to shut down the charging as to not fully discharge the battery. Checked on SOC after I did that and I did not lose much...

I am wondering how people do record keeping on generation, or situations that happen and you need reminded that you need to account for that. What are you doing? For me, I use a stand alone computer that reads from the charge controllers and the battery at all times. I then get a screenshot...

When using a circuit breaker of any kind, I was alway under the impression of take max amperage of the circuit and multiply by 1.2 or 1.25 and choose that size breaker if you can. With a 100A BMS and an MCB as the disconnect, should it be 125A for the MCB or should you put it at 100A as you...

I currently have a 100Ah 24V batt that has served be well. I would like more capacity on the system. My budget comes from a small bonus account I get from work. I can get a 75Ah 24V cell pack for about $425 today. I can get the extras (busbars, BMS, etc.) as well for about $100 on top of that...

I currently house my battery and SCC in a small shed on my back enclosed porch. With AZ heated up, I am getting concern on proper storage. I have lost a SCC in the past due to monsoon rain so I am looking for something enclosed, fire resistant, and easy to work with. What are some ideas you have...

So I have a 100Ah 24V cylindrical cell battery that I assembled with an Overkill solar BMS. I top balanced it and it would not stay in balance on the top end for more than a couple days. I ended up getting an 8S capacitive balancer as I was having a 252mV deviation at the top end. This would...

Just wondering if there is some info on quality of this manufacturer. With the certificates and the ability to get this stuff from SanTan, I think it may be an interesting build. I like the cabinets and how you can just put the server batteries in there vertical without taking up too much...

So, I seem to have an issue with either my BMS or inverter. 100Ah 24V battery with an 8S Overkill BMS 2000W Giandel Pure Sine inverter 2 Epever SCC (one 40A with 1050W array, one 30A with 500W array, both same charge settings) When my battery reaches full charge and charging stops, the BMS...