All | Astronomy | BMS | Backpacking | Batteries | Bikes | Bolt_EUV | Camping | Channel Islands NP 2021 | EV_Charging | EVs | Ecomarathon | Home Network | SRJC Earth Day 2022 street mural | SRJCO | Solar | Sustainability | Teardrop | e-Bike | e-Golf | e-Mower | e-Stang | lunar eclipse 2022
2021-01-18 e-Stang range test Posted on January 18, 2021 20:16:08.
Drove 25.7 miles without charging. Yellow light wasn't stuck on yet, but it would come on with heavy acceleration on the flats in 70 degree weather so probably only had a few miles more before stuck on yellow, so less than 30 mile range but how much less I don't know.
6_6_2020 4_05_08 PM_finishing_charge Posted on July 11, 2020 14:56:53.
Download ZIP File
6_23_2020 6_08_22 PM_chg_after_bal Posted on July 11, 2020 14:56:41.
Download ZIP File
valence cell balancing Posted on June 23, 2020 08:45:17.
Valence cell balancing
6/21/2020
Module 1
start ~10:22 AM 2.5 amps ~3.37V/cell interbal on since others aren't charging, makes sense, takes 100 mA away from charge current
accessory battery started at 12.75V pulsing down to 12.53V - BMS measuring high voltage or sending the data?
11:22 .14 amps 3.61 to 3.64V
11:41 .01 amps 3.632 3.659 3.622 3.643
Module 2
start 11:44 2.95 amps 3.35V acc batt 12.68V
1:54 12.63V accy batt module 2 .01A 3.653 3.652 3.649 3.618
Module 3
start 3:14 2.9 amps 3.35V 12.68V acc batt
5:51 .17 amps 3.650 3.649 3.637 3.655
Module 4
start 5:56 acc batt 12.54V 2.68 amps 3.33V
8:57 .11 amps 3.651 3.651 3.620 3.653
Module 5
start 8:11 PM 12.22V acc batt 2.7A 3.34-3.35V
9:39 .01A 3.634 3.633 3.623 3.653
Module 6
start 9:41 PM 12.15V acc batt 3.32-3.34V 2.73A
11:14 .15 amps 3.633 3.725 3.541 3.572 >>> THIS IS A PROBLEM
Module 7
Start 5:32 AM acc batt 12.50V 2.78 amps 3.32-3.34
7:07 .33A 3.542 3.687 3.712 3.552 >>> THIS IS ALSO A PROBLEM
Module 8
Start 7:09 AM 12.24V acc batt 2.70 amps 3.33-3.34V
8:44 .01A 3.645 3.642 3.606 3.639
Module 9
start 9:00 PM acc batt 12.41V 2.98 amps 3.35V
10:58 .41 amps 3.581 3.597 3.670 3.612
Module 10
start 7:35 AM 6/22 2.84 amps 3.34 to 3.35V acc batt 12.92 after charge overnight
10:24 .01 amps 3.623 3.654 3.655 3.652
Module 11
start 10:27 acc batt 12.69V 2.83 amps 3.33V
6:14 PM .01 amps 3.617 3.652 3.652 3.648
Module 12
start 6:15 PM acc batt 12.32V 2.06 amps 3.32 to 3.34V
8:02 .22A 3.603 3.655 3.575 3.671
5_19_2020 10_16_28 PM AC Mustang First Drive Posted on May 23, 2020 07:22:09.
Download ZIP File
2019-03-24_e-Stang_charger_testing Posted on March 24, 2019 14:57:37.
Mustang 240V charging with dead fans
3/24/2019
Charger fans died second time. First was Papst IPC 1154 rated that only lasted 3 years, required charging at 7.5 amps on warm days because it would not cut back agressively enough and would cut off.
Second ones were Delta IPC 1155s that lasted 9.5 years.
Without fans in 56 degree weather inside the garage, after 10 minutes at max 20 battery amps or 8 MPH charge rate it got above 100C and throttled to 16 amps at 107C, 6.4 MPH.
Put a ~18" fan pointed down in the engine compartment and the temperature dropped to 105C and increased to 18A, 7.2 MPH. This might be an acceptable workaround if 120V is also available but it usually isn't. I might try powering the fan on the inverter.
Throttled to 14A or 5.6 MPH and it went to 100C, so the max recommended at 56F. This is pretty linear though so I thought I'd go down in current and see where the temperature stabilized.
12A gave 94C, 4.8 MPH
10A gave 82C, 4.0 MPH
8A gave 74C, 3.2 MPH
6A gave 64C, 2.4 MPH
120V charges at 5A or 2.0 MPH so probably below this.
So assuming linear shift:
56F ambient 14A max 5.6 MPH 70%
68F 12A 4.8 60%
90F 10A 4.0 50%
106F 8A 3.2 40%
It hasn't ever gotten hotter than this.
126F 6A 2.4 30%
2017-11-30 e-Stang range test Posted on December 02, 2017 16:59:31.
Drove 31.8 miles, 12.1 miles in the morning and 19.7 after work, 30.9 total before the 2.9 min cell voltage yellow light came on. Red light expected within a mile, so estimate 33 mile range. But this involved several miles of steady ~20 MPH freeway traffic driving, and coasting and dropping to 20 MPH at one point since I was hypermiling and no one was behind me, which probably added a few miles compared to driving the speed limit. So count on 30 miles, or 24 miles to keep the pack above 20% capacity.