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I just got a screaming deal on 4 100W 12V panels and I'm going to mount them on the top of my pickup camper shell. I'm mounting them sideways in a row front to rear. I will end up with one large combined panel 40" x 80" I will hook them up 2S2P. I'm thinking of making a rack using 80/20 T-Slot...

Has anyone tried running the BMS App on a M1 Macbook? I know some iPhone Apps will run in Big Sur. I'm wondering if anyone has tried this?

I'm still trying to decide what style of fuse and block to use in my build. For my low amp tests I just used a ATO Anderson Powerpole fuse block I have. Looking at pics of a 100 Amp Maxi Blade Fuse got me thinking. I'm using 4 AWG wire to/from the starting battery, the DC-DC/MPPT charger and to...

I saw this video on YouTube and my mind went into overdrive. In the video they have a slide out panel for when you're parked, that slides to the rear. Then I thought slide out to the side and drop down at the end. Have panel #1 flat mounted on the roof with a raised stand. Then under it a 2nd...

On my local Craigslist is a Renogy 1000W inverter/charger w/remote control module, asking $200. Are these any good or junk? Looking up the specs, it doesn't have a LFP profile. One of the AGM profiles is 14.1V Bulk/boost and 13.4 Float. Would this work for a LFP battery and if not, why? I...

I saw someone using a cripmer that looked like this on a YouTube video and it looked interesting. So I did a search and this one came up and looks similar to the one he was using. For <$25.00 I thought what the hell and have it on order, free ship to store, @ Home Depot..... It's suppose to...

One of the pairs of 18650s for my Vape mod. When they're reading low on the Mod. I put them on the external charger. They start at 3.5V and then almost immediately jump to 3.8V. They're LG HG2 and I've had them for quite some time. They may be 2+ years old. I have a bunch of batteries for my...

I bought 4 sets of the used Andersen Power Pole PP120 that Battery Hookup was selling. The short wire connected on one side will work for me and I'm going to get 4 connectors to use on the other half of them. The question is, what kind/model of crimper was used for these. There is 4 crimp...

Solar panel efficiency. Is there a formula to compare output of panels against other panels of different wattage? If a lower wattage panel is 20% efficient and a higher wattage panel is 15%, how do you compare them at the amount of power to the SCC? Could a lower watt panel actually out perform...

How long can LiFePO4 cells last if they have been stored for 4-6 years. If they were @ 3.2-3.3V when boxed and crated and stored in a dry area between 40-90F, how would you test them to see if they're still good? What would you pay for NOS like this per AH?

I found these on Amazon and then looked at them at their web site. Was thinking about changing the configuration to 2P4S, for a 120AH battery. I have to add my own BMS to them and will need extra bus bars. Has anyone dealt with Spirit Energy? Can anyone identify these cells? Is there a reason...

45+ years ago, when I was working at a gas station and installing batteries. I used a fine tooth 1/4" ratchet and socket on the terminals. After shorting it to ground a few times, I wrapped the handle with electrical tape and never had that problem again. If I was doing it today, I would use...

Does anyone have any experience with a BK Precision 1692 3-15V, 40A DC Power Supply? You can set the voltage, but not the current. Would it work to charge 100AH LiFePO4 3.2v cells and 12.8v batteries? There is one locally for about half the retail price that they're claiming has been lightly...

I took a chance and have ordered one. Has anyone tried the KISAE DMT1250 Abso 50A DC-DC Battery Charger with MPPT. It looks to have better specs than the Renogy DCC50S. It can use 24v solar panels vs the 12v panel limit of the Renogy and it looks like it can go 50 amps on either side vs the 25...