August 9, 2011: This Ford Ranger EV has commuted reliably to work for 17 consecutive days with no problems. Our Goal: 30 consecutive days of commuting. On 8/9, I drove the EV another 9 miles. Afterwards, pack voltage was 150.6 V. State of Charge was ~ 60%. Ambient temperature at charge was 70 degrees F. Still just 6 BMS regulators are communicating.
Started Charge: Turned current to 26.0 Amps for 50 minutes to 171.0 V.
Turned down current to 20 Amps for 5 minutes to 170V.
Turned down current to 15 Amps for 6 minutes to 170V.
Turned down current to 10 Amps for 13 minutes to 171V.
At this time, Regulator #2 and #3 reached 14.50V first. This was the high voltage limit set. Green light blinking on MK3 and regulator started regulating.
Charge time was 1 hour and 14 minutes.
Final Voltage Warm 172V.
Final Voltage Cold > 8 hours later 155.6V (next morning).
NEXT: Still working to communicate with additional 5 BMS regulators so that 22 of 24 batteries are regulating. Also, bad regulator is still out for replacement.
Rae EV Battery Blog for EV enthusiasts.
Wednesday, August 10, 2011
Tuesday, August 9, 2011
Battery Charge #19
August 8, 2011: This Ford Ranger EV has commuted reliably to work for 16 consecutive days with no problems. Our Goal: 30 consecutive days of commuting. On 8/8, I drove the EV another 9 miles. Afterwards, pack voltage was 152.3 V. State of Charge was ~ 70%. Ambient temperature at charge was 70 degrees F. Of 11 regulators now installed, 6 BMS regulators are now communicating.
Started Charge: Turned current to 24.0 Amps for 45 minutes to 171.7 V.
Turned down current to 20.0 Amps for 7 minutes to 170V.
Turned down current to 14.9 Amps for 8 minutes to 170V.
Turned down current to 10 Amps for 20 minutes to 171V.
At this time, Regulator #1 and #3 reached 14.50V. This was the high voltage limit set. Green light blinking on MK3 and regulator started regulating.
Charge time was 1 hour and 20 minutes.
Final Voltage Warm 173V.
Final Voltage Cold > 8 hours later 155.6V (next morning).
NEXT: Still need to communicate with additional 5 BMS regulators so that 22 of 24 batteries are regulating and equalize during charge. Also, bad regulator is waiting replacement.
Started Charge: Turned current to 24.0 Amps for 45 minutes to 171.7 V.
Turned down current to 20.0 Amps for 7 minutes to 170V.
Turned down current to 14.9 Amps for 8 minutes to 170V.
Turned down current to 10 Amps for 20 minutes to 171V.
At this time, Regulator #1 and #3 reached 14.50V. This was the high voltage limit set. Green light blinking on MK3 and regulator started regulating.
Charge time was 1 hour and 20 minutes.
Final Voltage Warm 173V.
Final Voltage Cold > 8 hours later 155.6V (next morning).
NEXT: Still need to communicate with additional 5 BMS regulators so that 22 of 24 batteries are regulating and equalize during charge. Also, bad regulator is waiting replacement.
Monday, August 8, 2011
Battery Charge #18
August 7, 2011: This Ford Ranger EV has commuted reliably to work for 15 consecutive days with no problems. Our Goal: 30 consecutive days of commuting. On 8/5 -8/6, I drove the EV another 10 miles. Afterwards, pack voltage was 152.0 V. State of Charge was 70%. Ambient temperature at charge was 80 degrees F. Of 11 regulators now installed, 6 BMS regulators are now communicating. One regulator did not start up correctly and was returned (no led initiation). Turned current to 26.8 Amps for 38 minutes to 170V. At this time, Regulator #2 reached 14.50V. High voltage limit was reached green light blinking on MK3 and regulator started regulating.
Turned down current to 18.6 Amps for 15 minutes to 170V.
Turned down current to 14.4 Amps for 8 minutes to 170V.
Turned down current to 10 Amps for 10 minutes to 170V.
Charge time was 1 hour and 11 minutes.
Final Voltage Warm 164V.
Final Voltage Cold > 8 hours later 155V (next morning).
NEXT: Communicated with additional 7 BMS regulators so that all 22 of 24 batteries are regulated and equalize during charge
Turned down current to 18.6 Amps for 15 minutes to 170V.
Turned down current to 14.4 Amps for 8 minutes to 170V.
Turned down current to 10 Amps for 10 minutes to 170V.
Charge time was 1 hour and 11 minutes.
Final Voltage Warm 164V.
Final Voltage Cold > 8 hours later 155V (next morning).
NEXT: Communicated with additional 7 BMS regulators so that all 22 of 24 batteries are regulated and equalize during charge
Friday, August 5, 2011
Battery Charge #17
August 4, 2011: This Ford Ranger EV has commuted reliably to work for 14 consecutive days with no problems. Our Goal: 30 consecutive days of commuting. On 8/4, I drove the EV another 9 miles. Afterwards, pack voltage was 152.5 V. State of Charge was 75%. Ambient temperature at charge was 80 degrees F. Five BMS regulators were still communicating. High voltage limit for all 5 regulators is set to 14.5 volts. Started Charge:
Turned current to 23 Amps (automatically migrated to 23 Amps because of ambient temperature) for 50 minutes to 170V. At this time, Regulator #2 reached 14.50V. High voltage limit was reached green light blinking on MK3 and regulator started regulating.
Turned down current to 15 Amps for 10 minutes to 170V.
Turned down current to 10 Amps for 13 minutes to 170V.
Turned down current to 5 Amps for 22 minutes to 170V.
Charge time was 1 hour and 35 minutes.
Final Voltage Warm 166.8V.
Final Voltage Cold > 8 hours later 156.1V (next morning).
NEXT: Install additional 7 BMS regulators so that all 24 batteries are regulated and equalized during charge.
Turned current to 23 Amps (automatically migrated to 23 Amps because of ambient temperature) for 50 minutes to 170V. At this time, Regulator #2 reached 14.50V. High voltage limit was reached green light blinking on MK3 and regulator started regulating.
Turned down current to 15 Amps for 10 minutes to 170V.
Turned down current to 10 Amps for 13 minutes to 170V.
Turned down current to 5 Amps for 22 minutes to 170V.
Charge time was 1 hour and 35 minutes.
Final Voltage Warm 166.8V.
Final Voltage Cold > 8 hours later 156.1V (next morning).
NEXT: Install additional 7 BMS regulators so that all 24 batteries are regulated and equalized during charge.
Thursday, August 4, 2011
Battery Charge #16
8/3/11: Drove 13 miles. State of Charge after was 150.0 V (60%). Ambient temperature at charge is 80C. Five BMS regulators installed and five are communicating. Set High voltage limit for all 5 regulators to 14.5Volts. Started Charge:
Turned current to 25 Amps (automatically migrated to 23.0 Amps because of ambient temperature) for 65 minutes minutes to 170V. At this time, Regulators #2 and #3 Reach 14.50V. High voltage reached and regulators started regulating.
Turned down current to 15 Amps for 15 minutes to 170V.
Turned down current to 10 Amps for 20 minutes to 170V.
Recorded Peak voltages from Pearl Scanner BMS Software:
02V 14.50 GREEN BLINKING 02MA 14.55 02V 6.83
03V 14.48 03MA 14.82 03V 6.73
04V 14.24 04MA 14.62 04V 6.76
05V 14.13 05MA 14.50 05V 00.00 (DISCONNECTED?
06V 14.12 06MA 14.53 06V 6.81
Turned down current to 5 Amps for 5 minutes to 170V.
Charge time was 1 hour and 45 minutes.
Final Voltage Warm 165V.
Final Voltage Cold > 8 hours later 156.0V.
Battery Charge #15
8/2/11: Drove 9 miles. State of Charge after was 152.6 V (75%). Ambient temperature at charge is 80C. Five BMS regulators installed and five are communicating. Set addreesses of all 5 regulators. Set High voltage limit for all 5 regulators to 14.5Volts. Big victory. Started Charge:
Turned current to 27.8 Amps (automatically migrated to 23.8 Amps because of ambient temperature) for 52 minutes to 170V. At this time, Regulators #2 and #3 Reach 14.50V. High voltage reached and regulators started regulating.
Turned down current to 20 Amps for 5 minutes to 170V.
Turned down current to 10 Amps for 12 minutes to 170V.
Turned down current to 5 Amps for 8 minutes to 170V.
Charge time was 1 hour and 17 minutes.
Final Voltage Warm 166V.
Final Voltage Cold > 8 hours later 155.6V.
Turned current to 27.8 Amps (automatically migrated to 23.8 Amps because of ambient temperature) for 52 minutes to 170V. At this time, Regulators #2 and #3 Reach 14.50V. High voltage reached and regulators started regulating.
Turned down current to 20 Amps for 5 minutes to 170V.
Turned down current to 10 Amps for 12 minutes to 170V.
Turned down current to 5 Amps for 8 minutes to 170V.
Charge time was 1 hour and 17 minutes.
Final Voltage Warm 166V.
Final Voltage Cold > 8 hours later 155.6V.
Battery Charge #14
8/1/11: Drove 14 miles. State of Charge after was 150.2 V (60%). Ambient temperature at charge is 80C. Four BMS regulators installed and one is communicating. Started Charge:
Turned current to 20 Amps for 80 minutes to 170V.
Turned current to 15 Amps for 15 minutes to 170V.
Turned current to 10 Amps for 17 minutes to 170V.
Charge time was 1 hour and 52 minutes.
Final Voltage Warm 169V.
Final Voltage Cold > 8 hours later 154.9V.
Turned current to 20 Amps for 80 minutes to 170V.
Turned current to 15 Amps for 15 minutes to 170V.
Turned current to 10 Amps for 17 minutes to 170V.
Charge time was 1 hour and 52 minutes.
Final Voltage Warm 169V.
Final Voltage Cold > 8 hours later 154.9V.
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