FilterGuy

Patience Grasshopper. Patience.

As long as the Power Supply is correctly set to the target voltage, there should be no reason to worry about over-charging the cells...

When top balancing cells in parallel, nothing much happens for a long time until a lot happens in a short time. When they hit 3.45...

That cell started with a higher SOC or was a 'weaker' cell. This is normal.

OK. Now it is a matter of being very patient. Set the target voltage on the Power supply before you hook it to the parallel cells...

Lets do some math. I assume these are new cells. New cells generally come at ~40% SOC. 16 280Ah Cells in parallel will need .6 X...

I don't have a reference, but have thought about it some. The idea of a very flat profile pack is intriguing to me. If you decide you...

The spec sheet says 10KA interrupt. That is lower than the class C but better than most other types of fuses.

After a few years of not having to charge one of these, I'm terrified of blowing the caps off the top 😂 no high voltage disconnect, no...

No. The best resolution is to make sure the cells are balanced and the BMS never shuts off.

Nice video. It is true that a breaker will not protect you from direct contact with the hot wire . However, what is not mentioned...

I have not run numbers but I suspect his calculator is using the ABYC tables (American Boat and Yacht Council). These tables are much...

That sounds correct. To be code complaint it should be outside.

They might exist, but I don't know of any Tigo sells two systems. One is just the rapid shutdown system and the other is an optimizer...

The rapid shutdown requirement has been in the NEC since 2017(?). It is not just CA. I don't know about 'shorting' the panels. I...

The max series fuse question is a good one. If we just add the two Iscs together, two strings are still under the 20A. The NEC...

With only two strings, you do not need fuses at all, but you do need an 'accessable' disconnect. (In NEC terms, 'accessible' means 1st...

I found this by accident and thought it might be useful for people DIYing a wind or turbine system. The A/C condenser fan on my house...

At the risk of sounding like Captain Obvious, the first thing to do is to see where you can reduce your energy usage without impacting...

You can ground the battery rack to the inverter. That is just fine.