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So one of @Will Prowse 's older videos, the one on the MPP 5048 and BigBattery, he finds that it will not charge from a 120v source, then figures out about 7 min in that a jumper between the hot legs solved that problem. Here's my quandry: My camp currently has an open frame 6500w generator...

So I've been sailing as an electrician on ships for about 15 years now and I'm running into the combination of health issues and Coast Guard requirements and I'm having to swallow the hard pill that I may never sail again. Looking down the barrel of 50 I'm too old and broken to start another...

Ok, here's a brain scratcher for y'all: Predator 2kw inverter generator can't carry a load and the governor seems to be acting up. Here's a short video: According to my Kill-a-Watt it's pulling ~700w (698-731w) constant load with a heat gun on low. In Eco mode the startup surge from a mini...

So I'm starting to pre-plan my next major solar setup to replace the 6500w generator at camp. The only reason I have such a large generator is the 300ft deep well pump running on 3-wire 240v system. Looking at 6kw 240v AIO's it seems like there are 2 choices that stick out at me: MPP LVX6048...

So I decided to raid my spare parts bins and make a new briefcase solar gen since I seem to have left my Jackery up at the camp somehow. I got most everything done today save the 120v outlet (that I thought I had the parts for in hand), just needed a little more cable management. 2x 40Ah...

Ok, I'm not finding what I'm after on Amazon, but someone on here might know of a reliable quiet inverter. I'm looking to mount a small projector in the ceiling of my pop-up camper to shine on a screen on the opposite end of the main space. Unfortunately all the 1080p (true) projectors that I...

I'm a huge fan of the 12v systems, they're still very valid even in the world of 48v everything. Just adding the Class-T shunt is about $150, the cheapest coulomb shunt is about $50, so there's about $200 of the $500 price difference right there. Since most companies charge a premium for that...

So since I'm building myself a more portable unit, I came across this: Evasive 12v 100Ah LFP battery - $169 Sure, it doesn't have bluetooth or low temp protection, but looking at Docan it's $240 for just that many cells, so I'll be robbing these for the guts. It's still a good deal though...

So I'm considering re-designing my laundry room at the camp because I think the plan I have now will provide just enough power for a single load of laundry every 2 or 3 days and that's pushing the capabilities of the current config. So I've been thinking of stepping up to a 48v stand alone...

So I started with preliminary designs and ideas in another thread, and then wouldn't ya know it a 1998 Coleman Pop-Up camper suddenly showed up in my driveway! According to the seller everything works! Except that the propane is disconnected... The battery was half hooked up backwards and...

So I'm hoping to pick up a new-to-me 1999 Coleman pop-up trailer on Tuesday and I've already started thinking about how I'm going to pimp it out so I can just grab & go when I'm on this side of the mountains. I've already got on the To-Do list: Flip the axle so I have ground clearance Build 2...

So after my experiences with JK, I'm not using them anymore so I need recommendations on different brands of BMS. I need: 4s and 8s versions (I work with both) 120+ amps continuous Bluetooth Low temp protection Heater function/control I don't think such a beast exists lower than 16s but I...

So I could use some input on stepping up my cabin's power game. I have 2 separate systems up there now, a 12v system and a 120v system independent system. The 12v bus feeds lights, stove exhaust fan, and the 2 diesel heaters so it's completely separate from the 120v side. Current 12v...

Math is failing me but I'm thinking about the math on a 72v battery for an ATV conversion. LFP cells are supposedly 3.2v nominal, and Li-Ion are 3.7v, and when I divide 72v by 3.2v I get 22.5 cells. Even if I go by 3.5v that comes out to 20.5 cells which doesn't work either. I've seen videos...

So when does a charge-verter become an AIO become a inverter-charger? When someone is trying to search for a piece of equipment it seems there is a lot of gray area in terminology used. Some examples include the good old AIO like the MPP units or the Aims charger-inverters or something that...

OK, so I like the idea of string inverters over micro inverters, they make more sense to me. I've been eyeballing the Growatt MIN 5000TL for a while now and I'm noodling out a small grid tie system just to offset some of the bill for the little bit of time I'm up there. I have a half dozen...

You only say that because you're not here taking cold showers. ;)

So I've driven past the old Newport News building a few times this week and since the place closed down it's been seriously re-vamped. I've got my suspicions as to what they're doing there, but I want to know y'alls thoughts. I've come up with bupkiss looking for news so... Hmmmm.... :unsure:

So now that I've replaced my laptop and gotten some of my data over, I can finally post some pictures of what I've been doing out here in the woods. So when I bought this place the electrical system was seriously borked, and I didn't know any better. I knew enough to know that a piece of...

So, the camp trip is imminent and part of the plan (about half of it actually) is to clean up and un-cluster-fsck my electrical system. Here's what I'm looking at: The cabin started life as a 1972 Kit Companion 24ft travel trailer with a 50a electrical drop and a 12v battery (tiny little...

So I needed a 24v case capable of 300Ah cells and Seplos wanted about $800 for their case and the special cables but no low temp cutoff, no heaters, no active cooling... weeeelllll... I have a welder! So first I got out the paints and painted them up real pretty... then drilled them like they'd...

Can someone tell me why this isn't working please? I press the button and the light comes on but both the inverter and my DMM show only 5v getting through. Once I step this up to the 3Kw 24v Growatt the pre-charge is going to take all bloody week! What am I missing? Wrong resistor? Wired...

Anyone know how to get rid if the stupid push button on a JJ 8s BMS?? I can't find a switch for it in the app. Also, is there a better app for the JK's? Overkill doesn't see it.

So I need to build a building up at the camp to house the new mini excavator and have space for a small utility/laundry room. The problem I'm having is that me and Trig are NOT friends and I don't know how to calculate the width of the building. All I know is that I want 10ft walls and I want...

So I got a couple used packs off a fellow member here to play with and started today. First thing I did was check the pinouts on the BMS to be safe and figure out voltage states... Uh oh! The jack that came with the packs is wired BACKWARDS from the JBD jack, and is the wrong shape. So I...

I've got a couple parts I'm not going to use and I'm hoping they'll find a good home. EPEver 2206AN MPPT Controller - $60 Used for a couple weeks before I replaced it, still have the box but lost the manual you can find here. JBD ZP08S002 8s 200a BMS with leads only. -$60 It's a dumb BMS...

OK, so I'm getting close to getting back up to camp to start working on the solar setup cleanup & expansion. Time to check my work please. There are some parts I already have that I'm going to be using, they'll be notated in the parts list. Parts list: Battery: 304Ah 24v 8s 304Ah Eve...

Sooo I've made a few LFP batteries, but now I'm looking at a project with cells stripped from old solar generators. I see a regular 5-wire BMS leads coming out which tells me 4s BMS and I've ordered some of those, but the whole pack is wrapped up in the blue heat shrink and I'd really, REALLY...

So quick question for y'all. I recently built a toy 52Ah 24v battery and used my bench top power supply to feed my HQST 20a SCC to do the initial charge. I'm seeing that between the 32v limit on the bench supply and the voltage differential that my cells never could get over 3.5v each, so it...

So I picked up some 52Ah cells and made a 24v ammo can build for giggles (honestly, it's not an addiction, I can quit any time I want) but there are a few things it's doing that make me wonder if my JBD BMS is bad or just weird. 1: When I disconnect the balance leads, I still have full voltage...

So I've been saying for a couple decades now that for any kind of alternative energy source to really take off, you'd need 1 company to step up and say "By 202x every Chevron/Exxon/Shell/Temco/Etc station will have Biodiesel/Hydrogen/Ethanol/Etc." and whatever that source was the industry would...

So some of us have built a couple of the Licetti AC Power Boxes so far and I see 1 MAJOR flaw in them and that is the SCC. The unit comes with a 10a MPPT controller module built in that is a little larger than a pack of cards but when you've got 280 or 304Ah cells in there that's pretty darned...

Hey y'all, I've got a really annoying thing happening whenever I fire up my Xioang app I'm hoping someone knows a fix for. When I open the app, it spends about 2 seconds searching for devices and automatically logs into whichever one is at the top of the list. Problem is I sometimes have 3 or...

Hey y'all, I'm looking at maybe grabbing one of the Growatt grid tie string inverters at the camp but knowing that my state is NEC2020 I need to make sure that I have all my install bits are up to snuff. To do this I figure it's best to buy a book that covers everything in simple terms as a...

So I was faster than my internet connection and ended up with the wrong lugs. I needed 4AWG to 1/4" rings and got stuck with 1/0 × 1/2" rings. The company wants more in return fees and shipping than it cost me to buy them. Anyone need some that size? Pure copper, I've got 20 of them if anyone...