User avatar
EVDRIVER
Posts: 5886
Joined: Sat Apr 24, 2010 7:51 am

Re: How is the 12V battery recharged? Max amperage?

Thu Jul 17, 2014 8:24 pm

Bob wrote:If you tap directly into the big battery pack, you will be bypassing a lot of safety devices. So if someone has a radio that draws too much energy, it could overheat your big battery pack and do real damage. I don't want to over-react, but in rare cases, Lithium-Ion batteries are known to catch fire when abused.

The nice thing about using an inverter on the 12V system is that you have the inverter's inherent power limiting AND the Leaf's DC/DC converter power limiting to protect you from damaging the big battery.

Bob


What type of radio draws more than 100 plus kw? I would not want to be in the same room with anything that draws that much. Any pack-connected device would be fused regardless.

LeftieBiker
Posts: 7369
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: How is the 12V battery recharged? Max amperage?

Thu Jul 17, 2014 8:31 pm

It would certainly speed things right up at cookouts...
2013 "Brilliant Silver" SV with Premium Package and no QC, and 2009 Vectrix VX-1 with 18 Leaf cells.

The most offensive, tasteless phrase in use here is "Pulled the trigger." I no longer respond to posts that use it.

User avatar
EVDRIVER
Posts: 5886
Joined: Sat Apr 24, 2010 7:51 am

Re: How is the 12V battery recharged? Max amperage?

Thu Jul 17, 2014 9:00 pm

And anything within a large radius.

Turbo3
Gold Member
Posts: 1844
Joined: Mon Jul 19, 2010 8:34 pm
Delivery Date: 12 May 2011
Leaf Number: 002191
Location: San Jose, CA

Re: How is the 12V battery recharged? Max amperage?

Sun Jul 27, 2014 12:47 am

For those with 2011/2012 Leafs Leaf Spy & Leaf Spy Pro now display the 12 volt charging amps in addition to the voltage measured by the VCM. This data can also be logged so you can graph a long trip and see how it varies. A negative reading is a drain and should only be seen when the Leaf is not in drive mode. If you stay in this mode long enough the battery voltage will drop down to the point that the Leaf will start to charge it back up.

Return to “Engineering”