Recent content by n4mwd

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 went out and I had to get an A/C guy to replace it under warranty. It turns out that these newer fan motors, called ECM motors, are notorious for failing...

Car alternators vary the field to vary the inductive current. Also, the battery is not the only load. It needs to be able to handle abrupt changes in load such as turning the headlights on and off. However, the alternator requires the battery to smooth it's ripple current into pure DC. That...

Thanks, that one looks like a winner. It looks like it was talking about emergency jump starters, but I don't see why it wouldn't work as long as it's common port.

My car is older than 10 years. Actually the first battery from the Toyota factory lasted about 12 years. The second one has been in for just a few years and is already showing signs of weakness. A commercial lithium starting battery typically has only a 5-year warranty. Today, even a high-end...

I couldn't find anything on their website about bms's. The only thing I found were finished batteries, and no prices, which generally means I can't afford them.

Yes, thanks. I will probably go with a slightly smaller one. That one will handle a 1000A starting load. The BMS units that I have looked at before would be rated for say 100A and only have a surge of 150A. Those wont work. I will look into the DALY BMS units. The LFP cells I'm looking...

I got that charge number from another site, but 14.7V sounds more reasonable. Higher than normal voltage wont harm a lead acid battery beyond boiling off some of the water. I would prefer a solid state bms solution that can surge to a high amp output for about 10 seconds that would be needed...

I know there are several manufacturers that make LFP car batteries, but they are always way overpriced. With the price of LFP cells coming down, it seems feasible to make my own since my car doesn't need a huge battery. Since the LFP cells are capable of doing the job, the bottleneck is the...

Its been a while and I pretty much gave up. The inverters I needed really couldn't do what I wanted. Or were unreasonably expensive. Basically, the way to do it properly is to have a subpanel that is purely powered by solar AC which is physically impossible to backfeed the grid. Then...

In my case, there is definitely no neutral wire going to the outdoor condenser. I don't know for sure about the evaporator. The evaporator has electronics in it that might be pulling from the 120 leg. However, it only uses about 5-600 watts going full till. Not counting the 10KW heat strip...

Thanks for the update. My outdoor condensor definitely does not use a neutral. I'll look into getting a euro inverter for it.

I haven't heard anyone saying they tried it, but several other people I asked said that it should work. So basically, I still don't know for sure. I have been busy and haven't had a chance to buy one and test it myself.

I think the OP was inquiring about the LVX not the LV. So far, nothing but rumors about the specs of the LVX6048. Those rumors are that it is low frequency, has a surge of 12KW, and an idle power of about 40 watts. I'm not buying one until they can put the specs in writing and stand behind...

I found the image below which illustrates how 240 volts work in split phase systems. The black phase, which would be the same as Euro 240 single phase, is what you get when you subtract Phase 2 from Phase 1. There could be a problem if the inverter ties the Euro neutral to ground. So the...

Real time load switching is something I've thought about and it would work if it's done right. I was just thinking of solar a/c set to run on the hysteresis of the battery pack instead of the thermostat. So when the batteries are at full charge the A/C comes on and when they drop to 75% it...