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| "Gas Armageddon": Energy/electricity prices in EU/UK (and how to deal with them) |
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| tom66:
--- Quote from: nctnico on August 27, 2022, 12:21:01 pm ---I strongly recommend against that. Making a good, reliable battery pack takes a lot of effort. I have been involved with that myself in the startup phase of a battery manufacturer. Nowadays they have a large team of engineers. Battery manufacturers typically test & match cells before putting them into a battery. Also the BMS needs to have all kinds of safety features to protect the cells. Last but not least, the battery pack is also certified for safety. If your home-brew battery pack catches fire, the insurance will not cover the damages. Also think about what happens if you sell the house. A home-brew battery will be frowned upon and a smart buyer won't accept it. All in all it is not worth the trouble. --- End quote --- Yeah, absolutely, that's my thought pattern too. While I'd only use LiFePO4 (I am absolutely not the guy to take apart thousands of laptop batteries to harvest 18650s, I think those people are god-damn insane) I still can imagine it would be rather expensive and difficult even with all off-the-shelf bits. I'd never have the willingness to put it near my house, so it'd go on the outbuilding instead, which would mean it's subject to weather, whereas a proper system could be built in the house. Altogether, it does look a lot cheaper to do it professionally, which is odd, but I don't mind! |
| nctnico:
The reason the battery manufacturer I was involved in is succesful is because the Chinese don't manage to make reliable battery packs using the off-the-shelve bits. 8) Their business model is simple: make better battery packs compared to what you can buy in China. |
| NiHaoMike:
--- Quote from: nctnico on August 27, 2022, 12:21:01 pm ---If your home-brew battery pack catches fire, the insurance will not cover the damages. --- End quote --- You could put it in a shed or outdoor enclosure a distance from the house. If it catches fire, no big loss other than the battery itself. Or put it in the garage and install fire sprinklers. --- Quote --- Also think about what happens if you sell the house. A home-brew battery will be frowned upon and a smart buyer won't accept it. --- End quote --- Take it with you or sell it separately. |
| tom66:
Fire sprinklers against a Li-Ion battery fire is like trying to put out the Hindenberg with buckets and sand. That said, putting it on an outbuilding is not too bad, provided you are OK with the cost of losing that building if all goes wrong. If you want to see some horror stories look at the DIY Powerwall groups on Facebook et al. |
| nctnico:
--- Quote from: tom66 on August 27, 2022, 01:19:02 pm ---Fire sprinklers against a Li-Ion battery fire is like trying to put out the Hindenberg with buckets and sand. That said, putting it on an outbuilding is not too bad, provided you are OK with the cost of losing that building if all goes wrong. --- End quote --- Yup. At some point I visited a company that does battery certifications. They put cheap cabins outside for any battery testing work. They learned that the hard way after a fire which caused a lot of damage to their main building. |
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