Friday, June 11, 2021

Re: [electricboats] Anyone uses a used EV car battery for powering ?

Hi Carsten,
I wrote a long rant in response to your brief one:
>Remember, in these days, everything you buy, produced in China, is solely controlled by local chinese supervisors !!!
>There are virtually NO western inspectors in China to check export goods anymore, due to very hard quarantine restrictions when entering China. No one wants to go to China >now, just to sit quarantined alone in an appointed hotel room for 4 weeks.
but I'll just summarize it.  This has nothing to do with China or Chinese.  This is short-term thinking driving the global race to the bottom.  None of us likes it, but many of us support it by purchasing products made in a factory.  But lest your statement be read as saying that western quality inspectors are superior to Chinese ones, I'll just say it ain't so.  They're all just doing their job, following instructions.  Short-term thinking dominates industry today and this is part of what has shifted factories to China. In my travels in China, I have found Chinese people to be just as compassionate, thoughtful, kind, loving, caring, attentive, creative, passionate, intelligent, etc. as people in other places in the world.  I'm very sad about the pollution and constraints on freedoms that they have to endure both at the workplace and in their personal time.  Reasons for avoiding China travel vary; my main one is that I don't want to risk my freedom taken away without due process as retaliation for some action taken elsewhere with due process, against a person with connections to the government of China.  Alright, it's longer than your rant, but at least it's shorter than it was!  :-)

Using a salvaged EV battery for your boat motor is a great idea, in my opinion, because it doesn't generate another order at a factory that oppresses its workers, community, and environment.  It also avoids causing an associated amount of mining which does approximately the same things.  If I could find a suitable EV battery, I would use it.  Of course, I would evaluate its capacity and ask questions about its history as part of the acquisition.  Power electronics are good, efficient, and cheap these days so you will probably be able to engineer a way to match or configure your battery to provide electricity at the voltage(s) your motor needs.  As for choice of chemistry:  Li-ion has a larger range of discharge voltages than LiFePO4 and NiMH.  As long as your electronics can accommodate this, it should work fine.  Check that the battery capacity, mass, and temperature requirements fit your situation and needs.  I'd love to read your report of how it works out on this forum.

Cheers,
Halden
_._,_._,_

Groups.io Links:

You receive all messages sent to this group.

View/Reply Online (#31511) | Reply To Group | Reply To Sender | Mute This Topic | New Topic
Your Subscription | Contact Group Owner | Unsubscribe [newarmyguitar24@gmail.com]

_._,_._,_

No comments:

Post a Comment