Using the Universal grid charger

[Mike Dabrowski 2000]

Thanks,
I had it formatted for the word page 4 wide, did not translate very well to the thread.
Mike

[aisbell]

Originally Posted by Mike Dabrowski 2000

Grid chargers batch # 1

Originally Posted by Mike Dabrowski 2000

EG Ulaanbaatar, Mongolia

Although Uppsala, Sweden, is sort of in the sticks, I'm probably closer to my probable closest Insight neighbor, faxe, than any Insight neighbor is to EG in Ulaanbaatar So you might add "AI Uppsala, Sweden" to your batch #1 grid chargers list.

[gilbertguy]

Interesting list, and the top 3 winners are.......

#1: California with 13 chargers (okay can't say that I'm suprised they had the most)
#2: A two way tie between Arizona and Ohio, each with 6 chargers
#3: And tied for third place we have Canada and Virgina both with 4 chargers each

Thanks Mike, great list seeing where all the chargers have gone.

[Varak]

CH New Zealand
EG Ulaanbaatar, Mongolia

Always get a kick out of that.

[Mike Dabrowski 2000]

Upps!
Sorry Art

MW Mobile , AL
RD Tucson, AZ
KK Prescott, AZ
MB Gilbert, AZ
MB Sun City, AZ
TH Casa Grande, AZ
DC Mesa, AZ
JT Santa Clara, CA
JW Pomona, CA
JH South Pasadena,CA
MM Whittier, CA
TC Moorpark, CA
TE Canoga Park, CA
SS Arcadia, CA
AD Torrance, CA
DG Azusa, CA
BJ Quincy, CA
DL Redway, CA
JL Penn Valley, CA
JS Vacaville, CA
WB Colorado Springs, CO
MB Melbourne, FL
MK Crestview, FL
TG Cumming, GA
GG Newnan, GA
CR Atlanta, GA
CE Waikoloa, HI
KP Iowa City, IA
BW Wilton, IA
RC Scalesmound, IL
WS Newburg, IN
JH Evansville, IN
SM Baldwin City, KS
KD Lafayette, LA
JM Mandeville, LA
DC Lake Charles, LA
MC Minneapolis, MN
BX St Paul, MN
TU Plymouth, MN
JJ Saint Charles, MO
CVN Saint Joseph, MO
JB Charlotte, NC
ET Chapel Hill, NC
RS Grand Forks, ND
GS Highland Park, NJ
GC Brick, NJ
SS Albuqerque, NM
EP Santa FE, NM
GR Niagra Falls, NY
TF Rochester, NY
WK Fillmore, NY
MS Willoughby, OH
PD Laruelville, OH
VA Brook Park, OH
WC Mayfield Hts, OH
GR Bowling Green, OH
JE Columbus, OH
SE Warren, OR
ML Hillsboro, OR
EK Gearhart, OR
CB Mountain Top, PA
DS Allentown, PA
RR Greenville, SC
JD Columbia, SC
RF Spartanburg, SC
LC Lenoir City, TN
MD Nashville, TN
JR Austin, TX
RM Garland, TX
KI Katy, TX
MK Salt Lake City, UT
LK Lynchburg, VA
MS Vienna, VA
JL Winchester, VA
JE Henrico, VA
KS Brush Praire, WA

ES Calgary, Canada
GG Quebec, Canada
PG Quebec, Canada
BB Edmonton, Canada
IO Huddersfield, UK
CH New Zealand
EG Ulaanbaatar, Mongolia
AI Uppsala, Sweden

Your neighbor may have one?
Alphabetical by state

[Mike Dabrowski 2000]

Too much unused code space.
The Larger microcontroller has given us so much needed freedom to add new features to the V2.0 code, that we are going to make an additional improvement to the discharger part of the charger code before we release this version.
Many people have asked the question of how can they use the charger to determine how healthy their pack is, and give a number to that so improvements to capacity and IR can be quantified.
We are adding the ability to set up a 1 to 4 cycle automatic Charge--discharge-- charge--discharge------ sequence. We will log into eeprom the results, and have two banks of data, so new cycles can be acquired, while retaining the reference cycle so the new can be compared to the old.

The serial out will do the actual point by point dataloging, once / minute for charging, and 10 times a minute during the discharge
We will store the following data for each cycle.
charge mAh
charge time
Topping time
Start charge V
End charge V

Discharge time
Discharge end V
Reason for discharger stopping

By comparing the first cycle to the last, we can see the mAh and discharge times get better, and if everyone is using the same discharger, the discharge time could be a good pack to pack comparison between all of our packs.
One pack I did, went from 20 minutes discharge time first cycle to 2.4 hours discharge time on the third.
Final discharge went down to the 130V that I set up as the minimum, without seeing a cell drop out, the first saw a cell drop out at 143V, and stopped the discharge because of that.
If the pack discharges down to the 130V, that value can be reduced on the next cycle until the whole pack can get down to 1V/cell, or 120V.
Ran a couple of cycles on my car last night with 25F ambient out doors using the electric space heater.
http://99mpg.com/Projectcars/packdis...ngthepackinth/
A picture of the setup

Anyone got any thing else you would like in the code?
This is the time to ask, as we hope to set the charger code aside for a while after the release of V2.0.

[Eli]

Most autocyclers I've seen start on a discharge and end on a charge? Would probably be good to end on a charge, at least. Or make it user selectable.

I can't think of anything at the moment, but I'm sure I will as soon as I actually get to use it. I think I'm looking forward to the LabVIEW software the most.

I want to get this Serial Server set up and let the forums watch my grid charges. Like watching paint dry, only better!

[Rush]

Sounds good Mike.

Can we put in a KW in and KW out, or I guess it will be watts in, watts out?

[Waynetc]

Mike - for me at least it would be great if the charger could score the pack
F through A+ If it ran through 4 charge discharge cycles and the data from
each was given a grade. C1=D-, C2=C+, C3=B-, C4=B+ , where C=cycle#. This would provide a great indicator for many to invest in a grid charger or think about searching for sticks or another pack.

My pack at least in my opinion is a good candidate for a good solid D, given how it behaves.

Looking forward to V2.0
Wayne

[interestedguy]

I like wayne's idea but maybe a percentage of original capacity? Thanks for all you do.