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Posted: 10/4/2022 11:42:20 PM EDT
[#1]
You're going to need a lot of 18650s to power a furnace or fridge for more than 5 minutes. A power wall has over 7,000 cells.
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Posted: 10/4/2022 11:50:14 PM EDT
[#2]
Quote HistoryQuoted: You're going to need a lot of 18650s to power a furnace or fridge for more than 5 minutes. A power wall has over 7,000 cells. I have been told that the Tesla car batteries are essentially that |
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Posted: 10/5/2022 12:40:59 AM EDT
[#3]
Do you need an ATF stamp for that bomb?
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Posted: 10/5/2022 10:02:55 AM EDT
[#4]
Quote HistoryQuoted: I have been told that the Tesla car batteries are essentially that Quote HistoryQuoted: Quoted: You're going to need a lot of 18650s to power a furnace or fridge for more than 5 minutes. A power wall has over 7,000 cells. I have been told that the Tesla car batteries are essentially that Yup Modem batteries - 4 for $2 |
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Posted: 10/5/2022 10:03:44 AM EDT
[#5]
Quote HistoryQuoted: Do you need an ATF stamp for that bomb? How are you helping? |
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Posted: 10/5/2022 12:22:27 PM EDT
[#6]
I am planning to build several small 1kw hr +/- portable power packs using 18650's and I have considered building a 60 or 70kwhr powerwall using retired medical cart battery packs. I am about 50% of the way there with my first two portable packs and will start work on my large pack when I get done.
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Posted: 10/5/2022 2:29:27 PM EDT
[#7]
Quote HistoryQuoted: I am planning to build several small 1kw hr +/- portable power packs using 18650's and I have considered building a 60 or 70kwhr powerwall using retired medical cart battery packs. I am about 50% of the way there with my first two portable packs and will start work on my large pack when I get done. Making it portable would be a really good idea. I could use it down at the lake property too. Do you have a link for those batteries? |
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Posted: 10/6/2022 2:30:58 AM EDT
[#8]
I've been planning on building something like that, but I want to use the cells out of a Nissan Leaf. You can buy them used on ebay. I built a battery pack for my golf cart out of some, and it works great. No reason in the world I couldn't build something to run the fridge for a few days out of them.
18650s might be a good option, but I hate soldering, and that would be a hell of a lot of soldering. |
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Posted: 10/6/2022 4:55:23 PM EDT
[#9]
Skip the 18650’s. Look at Lifepo4 batteries from places like battery hookup.
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Posted: 10/11/2022 5:19:40 PM EDT
[#10]
Quote HistoryQuoted: Skip the 18650’s. Look at Lifepo4 batteries from places like battery hookup. Battery Hookup is a great source for batteries. I don't have a link for the batteries I use because I can get them from work. I personally wouldn't use 18650's or any Lithium Ion chemistry for powerpacks except I can get them for pennies by the pound. |
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Posted: 10/11/2022 11:14:18 PM EDT
[#11]
Quote HistoryQuoted: Skip the 18650’s. Look at Lifepo4 batteries from places like battery hookup. Lifepo4 offers the highest density, # charge/discharge cycles, lower discharge ability and is also lighter, then Lithium and then deep cycle lead. Lifepo4 holds the charge the longest as well but it’s pricy. Do yourself a favor and forget the 18650’s - yes Teslas use them but it’s machine packaged. If if was starting over, I would start small and expand using Lifepo4’s. I need to replace my deep cycle batteries without ever using them. Edit - I used wheeled husky toolbox base and build multiple of them to be able to use independently at different locations and jumper together for heavy drainage should there be a need. I installed an inverter on top of one to have direct access to AC power. Unfortunately I used deep cycle batters and they have degraded over the years. |
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Posted: 10/12/2022 7:54:23 AM EDT
[#12]
Quote HistoryQuoted: Lifepo4 offers the highest density, # charge/discharge cycles, lower discharge ability and is also lighter, then Lithium and then deep cycle lead. Lifepo4 holds the charge the longest as well but it's pricy. Do yourself a favor and forget the 18650's - yes Teslas use them but it's machine packaged. If if was starting over, I would start small and expand using Lifepo4's. I need to replace my deep cycle batteries without ever using them. Edit - I used wheeled husky toolbox base and build multiple of them to be able to use independently at different locations and jumper together for heavy drainage should there be a need. I installed an inverter on top of one to have direct access to AC power. Unfortunately I used deep cycle batters and they have degraded over the years. I should be getting some batteries soon and was thinking about building a unit. |
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Posted: 10/12/2022 8:46:51 AM EDT
[#13]
Look at server rack batteries. They don't take up much room when installed in a rack and the system is expandable
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Posted: 10/30/2022 7:35:36 PM EDT
[#14]
So I came into some Volkswagen e golf batteries.
There are 16 volt batteries. Guess I'm off to find some information on using these. |
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Posted: 10/31/2022 7:25:15 AM EDT
[#15]
Quote HistoryQuoted: So I came into some Volkswagen e golf batteries. There are 16 volt batteries. Guess I'm off to find some information on using these. Three in series is 48V, now you just need a 48vdc to 120vac inverter. Five arrays of three batteries in series and then parallel those five arrays into a 48vdc to 120vac inverter. |
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Posted: 10/31/2022 7:40:08 AM EDT
[#16]
Quote HistoryQuoted: Look at server rack batteries. They don't take up much room when installed in a rack and the system is expandable I have a Bluetti 2kwh battery pack and solar for my fridge and camper. The LiFePO4 server rack batteries are 5kwh per unit and you can stack six in a rack. Ive considered using one for a permanent refrigerator power system. Combine it with three 450w panels and it should stay on for years with no need for a traditional generator. |
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Posted: 10/31/2022 7:41:11 AM EDT
[#17]
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