That sweet smell was electrolyte.
From: Lawrence Rhodes via EV <ev@lists.evdl.org> To: "ev@lists.evdl.org" <ev@lists.evdl.org>; "ev-requ...@lists.evdl.org" <ev-requ...@lists.evdl.org> Sent: Monday, August 7, 2017 9:22 PM Subject: [EVDL] Zummcraft LiMn2O4 battery disassembly. I took a chance and punctured the paper bottom of my battery pack. I counted 7 pouches. I then pried off the BMS top part accidentally piercing a component that let out a sweet smelling vapor...with a hiss...yikes. Cut the main power lines and removed the electronics. Half the pouches had 4vdc. The other half next to dead with a few hundreds of a volt. I then got a piece of wood and put the aluminum casing on it. Tapped lightly and the weight of the battery pouches allowed all the pouches to come out the bottom. This is an 11ah pack. Very dense. Do I have a chance of refilling this case or scrap the locking system and just wing it with replacement lithium cells. Each battery is 28 volts fully charged 25.6 nominal. It is a 2 3/4" by 2 7/8 by 11 inch case. Any chance I can fit anything useful into this case. The pouches perfectly fit. I'd love to get a factory replacement but Zuumcraft is not responsive. I need two batteries. A matched pair. So nominal voltage is 51.2volts fully charged 56vdc. The Zuumer is a lean to steer technology. Front wheel drive. Lawrence Rhodes -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20170808/8bb15897/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20170808/d790eecf/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)