View Single Post
Old 11-04-2019, 12:40 PM   #73 (permalink)
redpoint5
Human Environmentalist
 
redpoint5's Avatar
 
Join Date: Aug 2010
Location: Oregon
Posts: 12,863

Acura TSX - '06 Acura TSX
90 day: 24.19 mpg (US)

Lafawnda - CBR600 - '01 Honda CBR600 F4i
90 day: 47.32 mpg (US)

Big Yeller - Dodge/Cummins - '98 Dodge Ram 2500 base
90 day: 21.82 mpg (US)

Chevy ZR-2 - '03 Chevrolet S10 ZR2
90 day: 17.14 mpg (US)

Model Y - '24 Tesla Y LR AWD

Pacifica Hybrid - '21 Chrysler Pacifica Hybrid
90 day: 43.3 mpg (US)
Thanks: 4,337
Thanked 4,491 Times in 3,454 Posts
Quote:
Originally Posted by teoman View Post
I suppose if you had a massive loss in the cable, you could not start the car...
I measured parasitic draw again just for good measure and found it to be ~54mA in the TSX.

Yesterday I drove to the petrol station about 10min away running on just the LiPo battery. My meter read 15.44v when connected directly to the battery, and 242W consumption while the car was running with HVAC/radio/screen/etc off.

I attempted to start the car after filling up, but it didn't quite have the juice. I'm not sure if it's because the meter was inline with the battery when I attempted, or if 10min of running was enough to draw it down to the point it won't start the car. I connected the Pb battery to start it and complete my trip.

The alternator seems to target 14.3v, and either my LiPo is too small of capacity, or there's too much resistance in the wires, but 14.7v is the most I can get to show at the other end of my 10 AWG wire run. 5 minutes of running and voltage settles around 14.3v.

I can get about 4Ah out of the 5Ah battery before the alternator kicks in and holds the voltage.
Attached Thumbnails
Click image for larger version

Name:	IMG_5392.JPG
Views:	46
Size:	106.7 KB
ID:	27130   Click image for larger version

Name:	IMG_5394.JPG
Views:	33
Size:	66.8 KB
ID:	27131  
__________________
Gas and Electric Vehicle Cost of Ownership Calculator







Give me absolute safety, or give me death!
  Reply With Quote
The Following 2 Users Say Thank You to redpoint5 For This Useful Post:
Daox (11-04-2019), Vwbeamer (04-01-2021)