Car running current?

Google failed me on this one, all the hits seem to be about current
draw with the car not running. My 2006 Honda Jazz has the ignition
light on, and I'm trying to determine what sort of trips I can safely
engage in by using a battery charger at home and running with
(possibly) no charge into the battery from the alternator.

Any idea how many amps order-of-magnitude in daytime use, minimal
utilities? 1500cc 4 cyl V-tec engine.

 

[Jasen Betts]

On 2015-03-20, Bruce Varley <Bruce> wrote:

Google failed me on this one, all the hits seem to be about current
draw with the car not running. My 2006 Honda Jazz has the ignition
light on, and I'm trying to determine what sort of trips I can safely
engage in by using a battery charger at home and running with
(possibly) no charge into the battery from the alternator.

Any idea how many amps order-of-magnitude in daytime use, minimal
utilities? 1500cc 4 cyl V-tec engine.

with the headlights wiper and aircon/heater/blower off about I've done 1 hour trips,
with headlight on you have about 15 minutes.

this in a car with a mechanical engine fan, and eletric nothing.
(electric ignition, brake light, and turn signals)

VTEC is going to add to the power consumption, unless you can unplug it,

--
umop apisdn

 

[Clocky]

On 20/03/2015 4:03 PM, "Bruce Varley" wrote:

Google failed me on this one, all the hits seem to be about current
draw with the car not running. My 2006 Honda Jazz has the ignition
light on, and I'm trying to determine what sort of trips I can safely
engage in by using a battery charger at home and running with
(possibly) no charge into the battery from the alternator.

Any idea how many amps order-of-magnitude in daytime use, minimal
utilities? 1500cc 4 cyl V-tec engine.

Since it's EFI the ECU will likely cut out before your battery is flat
when it detects a low battery state. Not only that, with EFI you have a
fuel pump, ECU and injectors running which will draw quite a few amps so
that will limit your time. I think the Jazz also has a small capacity
battery.

It's really a "how long is a piece of string" type question, but on a
fully charged battery you might not even last 30 minutes.

 

[~misfit~]

Once upon a time on usenet Jasen Betts wrote:

On 2015-03-20, Bruce Varley <Bruce> wrote:
Google failed me on this one, all the hits seem to be about current
draw with the car not running. My 2006 Honda Jazz has the ignition
light on, and I'm trying to determine what sort of trips I can safely
engage in by using a battery charger at home and running with
(possibly) no charge into the battery from the alternator.

Any idea how many amps order-of-magnitude in daytime use, minimal
utilities? 1500cc 4 cyl V-tec engine.

with the headlights wiper and aircon/heater/blower off about I've
done 1 hour trips, with headlight on you have about 15 minutes.

this in a car with a mechanical engine fan, and eletric nothing.
(electric ignition, brake light, and turn signals)

VTEC is going to add to the power consumption, unless you can unplug
it,

Isn't VTEC hydraulicly actuated and anyway only kicks in above 'normal'
driving revs?
--
Shaun.

"Humans will have advanced a long, long, way when religious belief has a
cozy little classification in the DSM."
David Melville (in r.a.s.f1)

 

[Wayne Chirnside]

On Fri, 20 Mar 2015 16:03:41 +0800, Bruce Varley wrote:

Google failed me on this one, all the hits seem to be about current draw
with the car not running. My 2006 Honda Jazz has the ignition light on,
and I'm trying to determine what sort of trips I can safely engage in by
using a battery charger at home and running with (possibly) no charge
into the battery from the alternator.

Any idea how many amps order-of-magnitude in daytime use, minimal
utilities? 1500cc 4 cyl V-tec engine.

 

[pedro]

On Fri, 20 Mar 2015 16:03:41 +0800, Bruce Varley wrote:

Google failed me on this one, all the hits seem to be about current
draw with the car not running. My 2006 Honda Jazz has the ignition
light on, and I'm trying to determine what sort of trips I can safely
engage in by using a battery charger at home and running with
(possibly) no charge into the battery from the alternator.

Any idea how many amps order-of-magnitude in daytime use, minimal
utilities? 1500cc 4 cyl V-tec engine.

Too many variables, Bruce. Slap a DC tong on it and measure it.

 

On Saturday, March 21, 2015 at 6:05:59 AM UTC+8, Clocky wrote:

On 20/03/2015 4:03 PM, "Bruce Varley" wrote:
Google failed me on this one, all the hits seem to be about current
draw with the car not running. My 2006 Honda Jazz has the ignition
light on, and I'm trying to determine what sort of trips I can safely
engage in by using a battery charger at home and running with
(possibly) no charge into the battery from the alternator.

Any idea how many amps order-of-magnitude in daytime use, minimal
utilities? 1500cc 4 cyl V-tec engine.


Since it's EFI the ECU will likely cut out before your battery is flat
when it detects a low battery state. Not only that, with EFI you have a
fuel pump, ECU and injectors running which will draw quite a few amps so
that will limit your time. I think the Jazz also has a small capacity
battery.

It's really a "how long is a piece of string" type question, but on a
fully charged battery you might not even last 30 minutes.

There's lots of modules sitting in the backgound: ABS, airbag, cruise control
et cetera all adds up. I had an alternator fail on a Commodore and it ran
for 90 minutes (daytime no lights on).

 

[Clocky]

On 27/03/2015 5:22 PM, bruce56@topmail.co.nz wrote:

On Saturday, March 21, 2015 at 6:05:59 AM UTC+8, Clocky wrote:
On 20/03/2015 4:03 PM, "Bruce Varley" wrote:
Google failed me on this one, all the hits seem to be about current
draw with the car not running. My 2006 Honda Jazz has the ignition
light on, and I'm trying to determine what sort of trips I can safely
engage in by using a battery charger at home and running with
(possibly) no charge into the battery from the alternator.

Any idea how many amps order-of-magnitude in daytime use, minimal
utilities? 1500cc 4 cyl V-tec engine.


Since it's EFI the ECU will likely cut out before your battery is flat
when it detects a low battery state. Not only that, with EFI you have a
fuel pump, ECU and injectors running which will draw quite a few amps so
that will limit your time. I think the Jazz also has a small capacity
battery.

It's really a "how long is a piece of string" type question, but on a
fully charged battery you might not even last 30 minutes.

There's lots of modules sitting in the backgound: ABS, airbag, cruise control
et cetera all adds up.

Most are only drawing minimal current unless operating, but yes, it does
all add up.


I had an alternator fail on a Commodore and it ran

for 90 minutes (daytime no lights on).

The Commodore also has a larger capacity battery.