LeftieBiker
Moderator
Posts: 16152
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: 12V battery drained; car won't start!

Mon Nov 30, 2020 2:31 pm

My impression is that *EVs tend to pull more amps between charging episodes.
It depends on how you compare power drains. An ICE doesn't usually power the lights and blower with the engine off, but that does happen. I think it's more a case of engineers trying to make sure the DC-DC converter lasts the life of the car, and thus not telling it to provide enough accessory battery charging.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

SageBrush
Posts: 5607
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: NM

Re: 12V battery drained; car won't start!

Mon Nov 30, 2020 5:08 pm

LeftieBiker wrote:
Mon Nov 30, 2020 2:31 pm
My impression is that *EVs tend to pull more amps between charging episodes.
It depends on how you compare power drains.
In Amps
2013 LEAF 'S' Model with QC & rear-view camera
Bought Jan 2017 from N. California
Two years in Colorado, now in NM
03/18: 58 Ahr, 28k miles
11/18: 56.16 Ahr, 30k miles
09/20: 54.3 Ahr; 38k miles
-----
2018 Tesla Model 3 LR, Delivered 6/2018

LeftieBiker
Moderator
Posts: 16152
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: 12V battery drained; car won't start!

Mon Nov 30, 2020 6:34 pm

I explained what I meant in the next sentence, but I can recap: if you compare peak drains then the ICE pulls more amps from the 12 volt system, and if you compare long term drains the EV may pull more. Or not - I wouldn't be surprised if an Ionic EV used less.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

Return to “Batteries & Charging”