Lunar Energy • Hacker News Board

Re: Lunar Energy

#11

Post by wtfmcgrill » Thu, Jun 22, 2023, 4:52 AM UTC

BugsJustFindMe wrote: post #8

thekiptxt wrote: post #5

Clicked on the link expecting it to be a discussion about energy systems on lunar expeditions, or challenges, something like that. Instead I found it to be a product for "endless energy"? Scrolled to see "your time machine has arrived." Scrolled further to discover the team has "talented people", then that I could design my system today. Clicked "Explore system" and found the explanation for what this product is and…

> Scrolled further to discover the team has "talented people" One of their "brilliant" "talented" people appears to be huffing solder fumes without a fume extractor. Doesn't seem that brilliant to me.

Pb free man, gotta show people that you believe in your product by huffing tin fumes.

Re: Lunar Energy

#12

Post by wtfmcgrill » Thu, Jun 22, 2023, 5:01 AM UTC

beAbU wrote: post #6

So this is a battery?

By the limited information provided in their engineering video yes, it's basically a battery + BMS in the really big box and a charge controller, inverter and service disconnect in the other box. The batteries seem to be liquid cooled though.

Correction: it's a complete solar system (sans panels) packaged as an all in one system. Looks like they're trying to applelify solar

Re: Lunar Energy

#13

Post by sam_goody » Thu, Jun 22, 2023, 9:56 AM UTC

I assume this is like Tesla PowerWall which is sold by SolarCity together with their panels?

Can knowledgeable HNers tell me, as I am actually in the market now for such a system and Tesla doesn't ship to my corner of Europe, what sort of battery should I be looking for (Litium, deep cell, etc.)? What software and hardware do I need? Is there some sort of solar panel I should be looking for? Are there any companies that sell a good unit that the local electrician could install?

Re: Lunar Energy

#14

Post by beAbU » Thu, Jun 22, 2023, 10:15 AM UTC

sam_goody wrote: post #13

I assume this is like Tesla PowerWall which is sold by SolarCity together with their panels? Can knowledgeable HNers tell me, as I am actually in the market now for such a system and Tesla doesn't ship to my corner of Europe, what sort of battery should I be looking for (Litium, deep cell, etc.)? What software and hardware do I need? Is there some sort of solar panel I should be looking for? Are there any companies t…

I recently installed a full-house solar and backup power solution at home. It cost a lot of money but the peace of mind I have now is priceless. My country's electrical grid is falling apart, on some days we have up to 10 hours of no electricity, and this year alone we've had at least a 2 hour power outage every day.

Bottom line, it's quite expensive, and surprisingly complex to plan and spec out. It's nearly impossible to advise on the questions you asked without more information.

My suggestion is find a local installer and work with them. This is not something you DIY and the experts know what's available and what works best in your location.

Bottom line: - Powerwall is quite overpriced for what you actually get I believe. - This lunar product is most definitely going to be overpriced for what you are going to get. - Don't waste your money on any lead-acid based battery systems. Lithium tech has become cheap enough that even in my shitty 3rd world African country nobody is selling anything but Lithium any more. Longevity is so much better than lead-acid that it can't even be compared.

I'm not sure where exactly in Europe you are but have a look at Sunsynk's line of products. They manufacture and sell inverters and batteries and are Chinese/UK based. Their CEO/Figurehead is UK, so I would imagine they have reasonably good penetration in Europe by now.

Re: Lunar Energy

#15

Post by BugsJustFindMe » Thu, Jun 22, 2023, 1:47 PM UTC

wtfmcgrill wrote: post #11

BugsJustFindMe wrote: post #8

Earlier quoted context omitted.

> Scrolled further to discover the team has "talented people" One of their "brilliant" "talented" people appears to be huffing solder fumes without a fume extractor. Doesn't seem that brilliant to me.

Pb free man, gotta show people that you believe in your product by huffing tin fumes.

Even lead free solder smoke causes a bunch of ill effects. It's not a smart way to spend a day!

Check out the MSDS for various lead-free solders. They all warn against inhalation. Example: Read section 11 (page 8, toxicology) of https://www.rsd.net/assets/item/1431.pdf