Building an 18650 portable solar generator
- Thread starter River
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daromer said:
Thanks. I'm looking to do some field testing with it, this weekend. I want to monitor the system with a little probe, while it's under load.
It doesn't look like it's getting too hot--140f (60c) at the hottest parts. If it builds up heat too much, I was thinking about having part of the bottom cut out and replace with an aluminum plate, mounting the hot bits to it, acting as a heat sink.
Wattsup
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River said:Building a 4s20p Li-Po system that can charge from solar (or other sources) into a waterproof (IP67) case.
Thoughts?
First 18650 project.
You been watching Jehu's channel as well
Similar to the system I'm Building but mine is 4s40p.
Are they lipo or li ion?
Looking good so far
Wattsup said:River said:Building a 4s20p Li-Po system that can charge from solar (or other sources) into a waterproof (IP67) case.
Thoughts?
First 18650 project.
You been watching Jehu's channel as well
Similar to the system I'm Building but mine is 4s40p.
Are they lipo or li ion?
Looking good so far
Thanks!
I just heard about Jehu a couple of days ago. I thought I was onto something special! Ha!
We did order a lot of the same parts, as it turns out. And, this being my first attempt at this, I was really relieved. I was sorta just winging it!
I don't understand why that guy bought a waterproof container and poked holes in it.
I'm looking to step up to 40p after I finish the prototyping on this. I think I'm going to toss this off a waterfall this weekend to see if it holds up! We can add the other 20 cells if it does
Oh. They're LiPo.
Hard finding great deals on those things.
Oh, and this is the inlay shelf / shroud.
I'm going to vacuum form the final version after I find what works.
Korishan
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Nice build there. Really clean looking
If it's getting to 60C, it's already to hot. And with the lid closed, it'd get that hot all over. Definitely not good for the cells. The aluminum as a heatsink would help out a lot, good idea.
Remember, 50C is where a lot of us cut off the charging to a cell.
River said:
If it's getting to 60C, it's already to hot. And with the lid closed, it'd get that hot all over. Definitely not good for the cells. The aluminum as a heatsink would help out a lot, good idea.
Remember, 50C is where a lot of us cut off the charging to a cell.
skatershawn
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What are you looking to run off this?
I was trying to draw up plans to make one like this for car camping to run heaters and any other small practical appliance off of it.
I'm a 30yr old civil/environmental engineering student in my senior year, so i have some basic knowledge in electrical systems from my engineering physics two course but still need some good insight on what works in real life vs whats on paper; this project is exactly how I want to execute it so i'm commenting on this thread to get some more info out of your project.
kindly,
Shawn
I was trying to draw up plans to make one like this for car camping to run heaters and any other small practical appliance off of it.
I'm a 30yr old civil/environmental engineering student in my senior year, so i have some basic knowledge in electrical systems from my engineering physics two course but still need some good insight on what works in real life vs whats on paper; this project is exactly how I want to execute it so i'm commenting on this thread to get some more info out of your project.
kindly,
Shawn
KaminoReal
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KaminoReal
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wimpie007 said:
Sure.., I can bring several links with 18650 Ni-Cd batteries or this one clame to be LiPo, what I mean is 18650 is not LiIon exclusive.
On top of that is hard to say what is what, I mean true LiPo battery, more here:
"The catch is that plenty of companies arenot actually selling you a true Li-Po battery, instead its a lithium-ion polymer battery, or a Li-ion in a more flexible casing."
KaminoReal
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DarkRaven said:
DarkRaven said:
I have no issue, other then maybe understand what are you saying.
And what exactly is difficult for you to understand? Maybe this helps: http://secondlifestorage.com/t-Frequently-Asked-Questions-FAQ?pid=20014#pid20014
It started in the first post where it said "4s20p LiPo battery" with 18650s. The point is that it is very unlikely to be a LiPo if it is a 18650.
It started in the first post where it said "4s20p LiPo battery" with 18650s. The point is that it is very unlikely to be a LiPo if it is a 18650.
KaminoReal
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I understand it may be unlikely, but on what you base your assumption, on a forum member post in a help topic?
Hm? In the post it says "look, I have a 18650 LiPo battery here". I'm not basing any assumption on that post, I'm just saying that it is probably not a LiPo battery as the 18650s will be LiIon cells, no LiPo cells. The reason for the existence of LiPo cells is that you can build them in almost every shape you like (and weight and internal resistance, but that is another matter). It is very unlikely that someone will ever build a LiPo 18650 as there is no reason for such thing to exist.
And this opinion of mine is based on knowledge and experience I have. I might be wrong, but as of now I have never seen a 18650 LiPo. The ZNTER 18650 might be an exception, I'm not sure, but if then because of the special reason that this is not a traditional 18650. If you know about 18650 LiPos then please show them, that would be interesting!
And this opinion of mine is based on knowledge and experience I have. I might be wrong, but as of now I have never seen a 18650 LiPo. The ZNTER 18650 might be an exception, I'm not sure, but if then because of the special reason that this is not a traditional 18650. If you know about 18650 LiPos then please show them, that would be interesting!
Korishan
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Now now, let's keep our cool here. If there was a misunderstanding somewhere, then let's move on. We won't have a flame war on the forum. If you want to escalate it, take it to PM, please.
But as I see it, either 1) there was mis-information (whether on purpose or accidentally) posted originally; 2) there was a mis-reading of the original posting
If 1) Then the OP needs to correct the information
If 2) Then the replying party needs to accept the mis-reading
Let's move on, please. This thread is about building the Portable Solar Collector. Let's keep on that topic and continue with the learning and building process of that subject.
Since River is the OP, it should be him to clarify the chemistry of said cells. He states LiPo. Perhaps he can post the part numbers of the cells that make up his build. That would clarify everything up.
But as I see it, either 1) there was mis-information (whether on purpose or accidentally) posted originally; 2) there was a mis-reading of the original posting
If 1) Then the OP needs to correct the information
If 2) Then the replying party needs to accept the mis-reading
Let's move on, please. This thread is about building the Portable Solar Collector. Let's keep on that topic and continue with the learning and building process of that subject.
Since River is the OP, it should be him to clarify the chemistry of said cells. He states LiPo. Perhaps he can post the part numbers of the cells that make up his build. That would clarify everything up.