Previous >>2903345

I will Get a Huge 167ah Battery this year.

Reminder to read shit before axing stupid questions.
https://rentry.co/solarshit
https://rentry.co/heatshit

Currently "cooling with heat pump" is being updated in heatshit, as I experiment with my system more. Did a lot of work changing the distribution design and implemented reversed flow/return for radiator cooling. Might make a video or stream later to go over the entire thing.
Cooling an entire not too well insulated house eats up a fuckton of power though, it's doubling my power consumption.

>>2927613
I'm into soft, sensual, kissing.
I like to make love.
How will going solar affect this?

>>2927633
Pros:
1. You can run electrical sex toys on "free" electricity
2. In your soft sensual love making moments you do not have to be distracted by stray thoughts of high electrical bills
3. With solar and possibly a heat pump, you can achieve better thermal comfort in your home, on the cheap, contributing to a good environment for love making
4. Buy a jacuzzi and run it for free, make more sexy times
Cons:
1. Talking about your cool solar setup to women will not make their peepee harder
2. In extremely first world places, your HoA might bully you, interrupting your sexy times by resident Karens ringing your doorbell to tell you about how you may or may not be violating the HoA ruurus
3. You could pay many hookers for the price of the solar system

>>2927634
>1. Talking about your cool solar setup to women will not make their peepee harder
you dont talk to the corrects girls or use the correct words. alternative girls like that, you just need to use more hippy words
i almost get laid recently like that talking about solar, insulation, passive houses and canadian wells, but then i was barely able to contain my cringe when she was bullshiting me with astrology and i fucked up

>>2927637
>talk about solar, insulation, passive houses to w*man
>responds with astrology
I think I'll just die a virgin instead.

>>2927638
you dont get always that back, it is just what the last time happened
i am an astronomer, i was cringing haaaaaard

bump

Had a power outage for about two hours. Ran my fridge off a battery / inverter. It was eating around 200 watts. I used my battery ryobi fan and aimed it at the coils / compressor. Power use dropped to around 190 watts.

What are my chances on smuggling lifepo4 cells on my check luggage? Airfare and taxes are like 150% the cost of the cells.

>>2930176
0%

But if you manage to stuff them in your Shoes then you are Gucci.

>>2926704 (OP)
Anyone ever run their reptile room off solar power? I am looking into buying a snake soon and I want to use solar power for the heater and thermostats

>>2930744
It's going to be exactly as inconsistent as any other solar application. If at all viable, it's always better to do whole-house applications than "small" individual projects. Quotation marks because you'd probably still need at least a half-size 200W-ish solar panel, maybe even a 400W if you want it to work somewhat in the winter.

>>2930766
>If at all viable, it's always better to do whole-house applications than "small" individual projects
Why?

>>2930782
Because cost usually scales better. For this reptile thing, if you made a simple DC system with DC heaters and battery, you'd be looking at maybe $200-$300 cost (guessing, because I don't know how big you want to make it and what conditions it is in), with maybe 10-20% system utilization (because you have to scale it to winter consumption if you want it to be pure solar), so you're saving maybe $20 a year. A whole-house system is around $5-6k, but it might be saving you $1k+ a year.

>>2930744
buy two solar panels, one bigger and one smaller, connect them directly in series, put the smaller one in the terrarium bellow the sand, earth whatever, it will be used as a diode heater, maybe insulate bellow it, now you just need a thermostat capable of cutting of dc, a fuse that kind of basic electric stuff
>>2930791
well the trick is to not use a battery or a controller at all. dirt works as a thermal battery

>>2926704 (OP)
Greetings, Gotten my hands on a cheapo hybrid inverter that runs on 48V and has a RS485 port. No panels yet.
Ordered 2 identical 24V lifepo4 batteries for it on sale. Pic related. Both batteries have internal BMS for their cells but no output port. I reckon these 2 batteries would be better off balanced between themselves as well. Would an external BMS be up for the tasks (i.e. hook it up to the +&- on the batteries but not to their internal BMS'es) or should I crack the 2 batteries open and connect the external BMS to their invididual cells directly?

>>2930881
Probably thinking too hard for the grade of the battery. Top balance them on 24V in parallel at the start, then check them here and there if they are mostly the same voltage. Even if there is some capacity difference from the factory, it shouldn't drift significantly. And then if it does, you can worry about it then.
Chinks have these https://www.aliexpress.com/item/1005008869277316.html balancer units, but if you end up with this, make sure to fuse it and don't put it near anything flammable.

Conversely, a good 16s high current BMS is at least $100, closer to $200; if you're gonna spend that much on balancing alone, you might as well just build the whole battery from scratch, probably end up with something better than C-grade Aliexpress packs.

>>2930814
>dirt works as a thermal battery
If it's enough for the terrarium, then yeah. Getting an AC backup heater for winter days is probably also much cheaper than any kind of battery setup.

>>2930885
Thanks, guess I'll be using them without an external BMS for a while. The batteries themselves are to be placed in a non-flammable environment though there's to be a long line of breakers about 1 meter directly above them.
The reviews on these chiesiums are surprisingly decent, apparently some folks have been running them for years with little to complain about; I've been planning on getting another pair to bring the system to 200Ah if these two (+ the inverter) prove to work well. A $100-200 BMS is justified in my eyes in this case.
The problem with BMS'es in general from a newcomer's perspective is that most of the time they're either already installed inside a commercial battery or are more of a DIY solution wherein they're wired to individual 3V cells. Just surprised there's so few examples of something in-between i.e. this particular case with 2 commercial batteries in series. I'd assumed these can just be treated as 2 basic cells, i.e. internal BMS take care of the 3V cells and the external one balances the two sums.

Guess we'll see how it goes, maybe I'll follow your other advice and just make somethng custom out of cells and a proper BMS. For now the immediate concern was that the system would immediately go up in toxic smoke due to no balancing between the two 24Vs.

>>2930900
>I'd assumed these can just be treated as 2 basic cells, i.e. internal BMS take care of the 3V cells and the external one balances the two sums.
That's exactly what the aliexpress thingy does that I linked.
>For now the immediate concern was that the system would immediately go up in toxic smoke due to no balancing between the two 24Vs.
No, only if the batteries had some massive fault. The BMS would always trigger a disconnect from overvoltage.

I just like custom builds because I know what cells are inside and what BMS I am using with what voltage thresholds, as opposed to mystery meat, but known brands can be okay. Or stuff that Will Prowse tests and tears down, you can see what's inside and how it works.

>>2930905
Oh alright, my bad. Couldn't figure it out until I found a picture showing that the part that goes into the 4 pin input port is just 2 pairs of positive and negative terminals. Will probably get one (or something similar) just in case, cheers.

Is going all out on Maxeon 7 panels and a 180 kWh Anker battery solution the most retarded thing one could do?
(main motivation behind all of this: spite)

>>2930918
For panels it's pure quantity > quality nowadays, for batteries it's quantity > quality as long as you have some bare minimum. Inverters are arguable on price/quality, and with safety devices you definitely want quality.
Maxeon have their warranty going for them, but why Anker batteries?

Getting my 7.5kW penis extension next week, gonna have almost 13kW total. Should hopefully cover most of the running costs of the heat pump, saving about $2k a year on gas.