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In my new battery build, I was going to use a busbar I did not on my last build and found that this cheaper busbar had screws on that do not allow connection of the 4/0 lugs I would like to use. This shows the bottom 4/0 lug does not fit between the screws that secure the busbar to the plastic...

Input welcome. Have an overkill 8s 100 amp BMS that reads cell 1 and 2 as extremely low, but tests fine with a multimeter. I’ve replaced the ring terminals that measure them and same readings. This was just installed in my RV but had been used two months ago to pre charge for a top balance...

Really want to know if my wiring diagram at the bottom will work. This is in REference to @FilterGuy ’s Inverter DIsconnect with pre-charge in the resources at: https://diysolarforum.com/resources/inverter-disconnect-switch-with-precharge.60/ I m getting reday to build the 24 volt version...

I am mixing Topband 3.2 Volt Cells with different capacities into a single 8S Battery. There's about a 6% difference in capacities in the cells. I wonder what will happen? -Three are capacity tested at about 24.7ah. They are the blue wrapper ones from BatteryPlus, now sold out. -Five are...

I am drilling through my RV wall and do not know how they are constructed. Would you consider this a good place to drill though the wall without going through a beam? Please assume for the sake of discussion this is the only place. It is for a battery vent, and if wall idea doesn't work a...

Do you really see earlier production by putting panels in series to exceed the charging threshold? I don't, but I'd like to hear your experiences. I thought I was getting a bit of watts doing this, but I’m not. For example panels set up 3S for a potential 66 volts to squeeze more watts early...

Any tips for measuring Battery resistance? Device? Only when top balanced or should this even matter" I have a battery capacity tester that gives me a reading, but can quickly climb as the test goes on. I have the topband 25 ah lithium cells from battery hookup. When I hook my DL-24P...

I bought and installed a Battery Disconnect switch and am looking for how you would cover these terminals: I’ve got a couple of ideas. My favorite would be a cover, but does not come with one.

Has anyone else noticed polarity listed wrong in installation literature? I'm going to take a multimeter and test, but I find in Renogy literature it list positive end of the the cable is male in one, and female in the other. From their installation instructions for PV module: "The positive...

I found both legs on my split phase for both my air conditioners were crossed. The diagram below shows what I mean: So for the 16 years my house has been built, one 120 volt leg of the split phase leg from each air conditioner goes into Air Conditioning Circuit Breaker 1; the other leg of the...

I removed some of the RV undercarriages nails from the frame that hold the black corrugated plastic that keeps out the water. Some of them broke. Wondering if someone knows where to pick them to?

What type of inverter would you use for 1500 watts constant draw for 8 hours? I find myself on my RV once this build is complete to enough battery power and solar production to do Level 1 EV charging. Probably not for 8 hours, but more like 4 hours. Never put much thought into an inverter for...

Could not find the 1.25 times rule, also called the 80% rule in the 2023 NEC code. What is the source for the 1.25 rule for over current protection? Need to size a overcurrent protection 1.25 times the constant load. This could also be known as the 80% rule. I find sources on the internet...

Does anyone know Of an insulated cover for The end of a 12 volt 2/0 wire connected to a 440 amp battery bank? Among what I’ve looked for are dust covers and end covers, but can’t find what I’m looking for. I have a battery bank I’m going to rest on a 2’ slide out battery tray, and before I...

How do you tin your busbars? -Solder with MAF torch? -Solder dip is a solder pot? -Electroplate? -Chemical dip like liquid solder? -Something else? ========================== Drilled, Cut, and cleaned busbars today. Attempted to tin off the "Soldering" document with a MAF torch per this...

I installed my Victron Orion 24/12 70 amp DC to DC Converter and it sparks. Something is wrong with it. I was pretty surprised to see that has one post for both 24 volt and 12 volt ground. Sparks when a lead is added. I removed the ground leads to troubleshoot, and it still delivered 2.5...

This picture shows the left side wires the wrong way. This is the wrong way to set up a dual pole circuit breaker: Picture may make it hard to see, but the wiring is wrong. Wiring needs to be set up so the positive wires go on one side (Top), and negatives wires go on the other side...

Has anyone but me noticed that bayonet style LEDs of the same type do not fit correctly? This is getting frustrating as I buy bulbs from $2 to $25 and they don’t fit. Ive had this happen with 3 different types of bulbs. Sometimes they don’t fit snug, other times the tabs are in the wrong place...

I would like to get the Aims Converter that Will recommends, the Aims 120 VAC to 12/24 VDC Converter model #CON120AC12/24VDC. This will be for an RV installation. Can this be run by a 2300 watt continuous, 3000 watt peak inverter generator? I see that this has a 15 amp plug, and needs to be...

How do you hook the AC ground in the three pair cable for the AC out hardwire cord to your inverter? My AC ground has a #6 stud, but I don't see how to get an 8 AWG wire to fit that stud. I'm sure I'm missing something obvious. First time hardwiring an Inverter. I have a 3000 watt 24 volt...

Anyone know a cheap battery monitor that will display SOC and current in and out? I’m taking a look at battery monitors hoping to find a cheap accurate battery monitor, but with me wanting to read amps in and amps out, the only thing I can find is the Victron Smart Shunt and $130 is more than I...

What do Your Set Your Low Temperature Cutoff to for Lithium Batteries? Any reasoning to would be nice. I’m thinking of having the SCCs shutoff charging at 35, and the BMS shutoff charging at 32. I used to think this was an easy question with the battery spec sheet saying 32 F; however, the...

After waiting four months, I hooked my BMS to my batteries: THat matches really close to my readings of 3.30 per cell with a DMM.

What Hydrometer do you use for a specific gravity test? Do you do the temperature correction of .004 per 10 degrees F? Also, what do you consider fully charged for your battery bank since you’d expect a new one to be 100%, but at several years old, perhaps not? I ask because with the Deka...

I have a a SAMLEX 2000-12 inverter, and the 5/16 negative stud the battery power attaches to Wobbles slightly when loose. WHen tight, its nice and firm. The Positive Stud does not wobble and when loose. I Don’t think A stud should wobble, so I returned the first one I got, and get sent a...

I am building two 24 volt batteries, each with 8 S 280 ah Eve Cells. I've decided on two Overkill 8S BMS 24 volt 100 amps. I have a SAMLEX 3000 watt inverter, of which, I do not plan on running moe than 2000 watt loads, like a microwave for several minutes a day. I expect that and other loads...

I hook my Aims Converter 120 VAC to 12/24 VDC to 4 Lithium 280 ah cells and the Lug sparks as I hook it to the terminal. Can buzz also if kept on. I’m sure this is not normal and see nothing in the manual about sparking. I am hooking this up as the instrucitons say powered off and connecting...

I am wondering if anyone has installed 24 VDC in a fifth wheel or travel trailer, and how they got their 12 VDC to include electric brakes to work? The intent of the 24 VDC install is to provide 1200 watts of panels to safely power a 2000 watt inverter. Unfortunately, everything else in the RV...

Here is a link to some portable panels I found for sale for $150: https://www.walmart.com/ip/Lion-Energy-Lion-100-100-Watts-12-Volt-Solar-Panel-Foldable-Portable-with-Handles/422072307?comm-msg-vehicle=EMAIL&comm-msg-id=afbab1e6-61cb-48fd-91b1-7e486973eb6b There is no way I could buy two 50...

Considering this inverter and wondering if anyone who has one cam comment? AIMS Power 6000 Watt 48V [Split Phase] 120/240 Pure Sine Inverter Charger | Part number PICOGLF60W48V240VS https://www.aimscorp.net/product/6000-watt-pure-sine-inverter-charger-48vdc-240vac-input-120240vac-split-phase-output/