<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"></head><body dir="auto">Hi Chris,<div dir="auto"><br></div><div dir="auto">This should get you view access to images of a pack I opened up and a sketch diagram. All can feel free to copy.</div><div dir="auto"><br></div><div dir="auto">https://www.dropbox.com/sh/rlggfb7t2m55gio/AABzUXhJR8BG6Pjbws9x8W80a?dl=0</div><div dir="auto"><br></div><div dir="auto">The inner tube plan seems sketchy. If you need to remove a pack, a 2 post lift is best. Maybe on an EV meeting evening my shop is an option. It takes about 30 minutes to safely remove or reinstall that way. </div><div dir="auto"><br></div><div dir="auto">A bigger question is diagnosing what's wrong with the suspect pack. One cell issue or all degraded cells... i have software to see individual cell voltages (without dissassembly). Again, maybe fun at an EV meeting with other smart folks in our group.</div><div dir="auto"><br></div><div dir="auto">Good luck with your purchase decision.</div><div dir="auto"><div dir="auto"><br></div><div dir="auto">Kirk</div></div><div><br></div><div align="left" dir="auto" style="font-size:100%;color:#000000"><div>-------- Original message --------</div><div>From: Christopher Koch <jazzjunkie.chris@gmail.com> </div><div>Date: 5/14/23 1:14 PM (GMT-08:00) </div><div>To: Kirk Swaney - SHIFT Electric Vehicles LLC <kirk@shiftev.com> </div><div>Cc: Jacob Field <jacobtimothyfield@gmail.com>, Corvallis EVs <caevlist@caevclub.org> </div><div>Subject: Re: [Caevlist] Cute little EV on Craigslist (2011 Think City) </div><div><br></div></div><div dir="auto">Thanks Kirk, <div dir="auto"><br></div><div dir="auto">Some photos inside the battery would be great! I'm struggling to find even basic information like pack configuration beyond "400V"</div><div dir="auto"><br></div><div dir="auto">That might help with the temptation to drop the battery out without the proper equipment. I found a video where someone put a big inner tube underneath to drop the battery gently but I'm not quite crazy enough to try that yet.</div></div><br><div class="gmail_quote"><div class="gmail_attr" dir="ltr">On Sun, May 14, 2023, 12:05 PM Kirk Swaney - SHIFT Electric Vehicles LLC <<a href="mailto:kirk@shiftev.com">kirk@shiftev.com</a>> wrote:<br></div><blockquote style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex" class="gmail_quote"><div dir="auto">Hi Chris,<div dir="auto"><br></div><div dir="auto">I have serviced a few thinks, owned one, and have pictures of the pack opened up if you want to see what that looks like. It is a compact and well designed pouch cell pack.</div><div><br></div><div style="font-size:100%;color:#000000" dir="auto" align="left"><div>-------- Original message --------</div><div>From: Christopher Koch <<a rel="noreferrer" href="mailto:jazzjunkie.chris@gmail.com">jazzjunkie.chris@gmail.com</a>> </div><div>Date: 5/10/23 10:08 PM (GMT-08:00) </div><div>To: Jacob Field <<a rel="noreferrer" href="mailto:jacobtimothyfield@gmail.com">jacobtimothyfield@gmail.com</a>> </div><div>Cc: Corvallis EVs <<a rel="noreferrer" href="mailto:caevlist@caevclub.org">caevlist@caevclub.org</a>> </div><div>Subject: Re: [Caevlist] Cute little EV on Craigslist (2011 Think City) </div><div><br></div></div><div dir="auto"><div>Jacob,<div dir="auto"><br></div><div dir="auto">One of my big fears was that this was too obscure to have an enthusiast community, so I'm really glad to hear otherwise!</div><div dir="auto"><br></div><div dir="auto">I hear what you're saying about how tedious an 18650 build would be without some sort of automation; the only reason I would consider it is because I already have so dang many of them! If they aren't a good fit I'll just go with plan A which is use them to make my family a battery backup for their farm house.</div></div><div dir="auto">The 18650s I have are already assembled into little 3S3P submodules so if the stars align and the form factor is a Cinderella fit into the stock envelope that would take a lot of the work out of it. </div><div dir="auto"><br></div><div dir="auto">-Chris<br><br><div class="gmail_quote" dir="auto"><div dir="ltr" class="gmail_attr">On Wed, May 10, 2023, 9:52 PM Jacob Field <<a href="mailto:jacobtimothyfield@gmail.com" rel="noreferrer noreferrer">jacobtimothyfield@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto">The Think itself is a pretty neat little car. I've got one and love it, and there's a solid little enthusiast community with a lot of knowledge about the inner workings.<div dir="auto"><br></div><div dir="auto">I have all the specifications for the battery pack, as well as information on the CAN protocol it uses to communicate with the car — building a replacement battery pack is certainly within the realm of possibility.</div><div dir="auto"><br></div><div dir="auto">That being said, as someone who's tried building an EV battery out of 18650s, it takes AGES. If I ever upgrade the battery in my Think, it'll be using modules from another wrecked EV.</div><div dir="auto"><br></div><div dir="auto">If you have plenty of time, money, and electrical savvy, I'd say go for it! </div><div dir="auto"><br></div><div dir="auto">- Jacob Field</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, May 10, 2023, 9:28 PM Christopher Koch <<a href="mailto:jazzjunkie.chris@gmail.com" rel="noreferrer noreferrer noreferrer">jazzjunkie.chris@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto">Hi all,<div dir="auto"><br></div><div dir="auto">I don't want to start a feeding frenzy, but there is a sweet little EV for sale right now with a worn-out battery I'm thinking about buying (as are a lot of other people, according to the seller!)</div><div dir="auto"><br></div><div dir="auto">I'm trying to gauge the depth of what I'm getting myself into if I try to rebuild the battery.</div><div dir="auto">When I was at Arcimoto I was involved with designing their next-generation battery (sadly that project got scrapped) so maybe I'm too cocksure about my abilities.</div><div dir="auto"><br></div><div dir="auto">I have a couple thousand 18650s lying around yearning for a purpose, so there's a lot of hope that I might have what it takes to breathe new life into this thing but I wanted to put it out there for community comment and discussion.</div><div dir="auto"><br></div><div dir="auto">Is this a dream project waiting to happen, or is this 2011 EV from a defunct manufacturer a trap to avoid at all costs?</div><div dir="auto"><br></div>-Chris Koch<br><div dir="auto"><br></div><div dir="auto"><br></div></div>
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