Evan, I presume that your last number (occasionally down to 20%) is for SoC (State of Charge) which corresponds to 80% DoD (Depth of Discharge), meaning your 180Ah cells have only about 36Ah charge left?
Cor van de Water Chief Scientist Proxim Wireless Corporation http://www.proxim.com Email: cwa...@proxim.com Private: http://www.cvandewater.info Skype: cor_van_de_water Tel: +1 408 383 7626 -----Original Message----- From: ev-boun...@lists.evdl.org [mailto:ev-boun...@lists.evdl.org] On Behalf Of Evan Tuer Sent: Tuesday, October 22, 2013 7:12 AM To: Electric Vehicle Discussion List Subject: Re: [EVDL] Range Hi, my info added below On Tue, Oct 22, 2013 at 2:24 PM, tomw <tomofreno2...@yahoo.com> wrote: > Hopefully Evan will respond. Good to see he has 50k miles with no > noticeable > change in range. I thought I would respond since I have similar cells. The > car has about 4 years and 29k miles on it as an EV > (http://www.evalbum.com/3060). > > /- How many of the 180AH cells do you have./ > 36 cells for nominal 115V. About the max you can use with the controller I > am using. > 40 cells here. > > /- I assume you have the Blue CALB cells./ > Yes, CALB SE > Same > > / - Do you know the approximate converted weight of your vehicle./ > 2260 lb > Around 950kg / 2100 lbs > > / - Are you using a BMS, or the Jack Rickard bottom balancing technique./ > > A simple BMS just monitoring voltages to prevent over-discharge. They stay balanced by themselves so the charger just stops on total voltage. > > /- What Voltage are you charging the cells to./ > I charge the pack to about 125V, or 3.47V per cell, but actual cell > voltages > vary from around 3.45 to 3.52V at end of charge. > > Sounds similar. > / - What depth of discharge (DOD) do you normally take the cells down to./ > Usually 35% to 50%, never below 25%. > About 50% on a daily basis, ~20% on rare occasions. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20131022/74c1 f140/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA) _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
