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.
August 23, 2012:
August 24, 2012
August 23, 2012: There have been approximately 20 charges and 250 more miles since my