Markokk888
Posts: 19
Joined: Wed Mar 21, 2018 4:16 pm
Delivery Date: 21 Mar 2017

Active 12v to interior.

Sun Mar 25, 2018 7:56 am

Hello, i want to run small computer inside a nissan leaf it needs 12v and i want to leave it overnight running but the problem is when the leaf is off the 12v socket is also off. What is the best way to get 12v lines from the battery to the interior and from where ? Can i just tap in to active 12v lines somewhere inside the interior ? What is the best options here ? The power will not always be used so no need to worry about draining the 12v small battery.

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OrientExpress
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Posts: 1213
Joined: Sun Aug 08, 2010 12:22 pm
Delivery Date: 10 May 2011
Leaf Number: 2331
Location: San Jose, Ca

Re: Active 12v to interior.

Sun Mar 25, 2018 10:30 am

Best response is don't, unless your hook your LEAF to a battery maintainer.

But if you must, check the fuse panel on the left side of the dashboard for an unswitched 12v fuse and plug in an "Add-aCircuit" fuse tap there for your source of 12v. But remember with out a battery maintainer, you are probably looking at a dead 12v battery in the morning.
2018 LEAF SL
Gun Metalic
Delivery April 10 2018

Prior LEAF:
2014 LEAF SV
Ocean Blue
Delivery May 23 2014
50,000+ miles - all 12 bars - Same range as new - No warranty issues ever!

Markokk888
Posts: 19
Joined: Wed Mar 21, 2018 4:16 pm
Delivery Date: 21 Mar 2017

Re: Active 12v to interior.

Sun Mar 25, 2018 11:05 am

Well it's not for 24/7 use and the leaf have a solar panel so i probably will be fine. What will run 24/7 are a small cameras for security reasons but they will not consume much and they will run of a 5v i will add a separate battery for them. Btw dose a leaf charges the 12v battery from the main pack when the car is on ?

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OrientExpress
Forum Supporter
Posts: 1213
Joined: Sun Aug 08, 2010 12:22 pm
Delivery Date: 10 May 2011
Leaf Number: 2331
Location: San Jose, Ca

Re: Active 12v to interior.

Sun Mar 25, 2018 11:13 am

Yes, when the car is running the 12v system is powered by the traction battery.
2018 LEAF SL
Gun Metalic
Delivery April 10 2018

Prior LEAF:
2014 LEAF SV
Ocean Blue
Delivery May 23 2014
50,000+ miles - all 12 bars - Same range as new - No warranty issues ever!

Markokk888
Posts: 19
Joined: Wed Mar 21, 2018 4:16 pm
Delivery Date: 21 Mar 2017

Re: Active 12v to interior.

Sun Mar 25, 2018 11:21 am

Thank you for the answers. :)
One more question is it possible to replace the nissan leaf original small 12v battery with a bigger capacity one from the petrol or diesel car ?
or the car will somehow struggle with the regular car battery ?

GerryAZ
Gold Member
Posts: 1835
Joined: Mon Nov 22, 2010 6:47 pm
Delivery Date: 12 Jun 2011
Location: Phoenix, AZ

Re: Active 12v to interior.

Sun Mar 25, 2018 11:35 am

Markokk888 wrote:Thank you for the answers. :)
One more question is it possible to replace the nissan leaf original small 12v battery with a bigger capacity one from the petrol or diesel car ?
or the car will somehow struggle with the regular car battery ?


You can use a larger 12-volt battery, if you want to find a way to mount it. The car will periodically charge the 12-volt battery from the main battery when it is parked, but the original 12-volt battery may be too small to support your continuous load between charges. The solar panel just provides enough in bright sun to overcome the residual load of various modules in the car--it will not keep the battery charged with accessories on.

I replaced the Nissan original 12-volt battery in my 2011 (when it failed) with an AGM (sealed) deep cycle battery that fit the original tray. The deep cycle was much better for the discharge/charge cycles of the LEAF. When the original battery in my 2015 failed, I also replaced it with a Yellow-top Optima AGM deep cycle battery (group size 51R fits in the tray and has terminals in proper locations).
Gerry
Silver LEAF 2011 SL rear ended (totaled) by in-attentive driver 1/4/2015 at 50,422 miles
Silver LEAF 2015 SL purchased 2/7/2015

Markokk888
Posts: 19
Joined: Wed Mar 21, 2018 4:16 pm
Delivery Date: 21 Mar 2017

Re: Active 12v to interior.

Sun Mar 25, 2018 11:57 am

Well i'm driving a lot and i want to run many accessories some of them even when i'm not in a car. so just looking for some alternatives.
Sometimes when i'm on a trip i need to do some office stuff so sometimes i need a scanner, printer, pc.. etc.. sometimes it's better to do work on a side of the road than just sit all day in the office.. sounds crazy.. but this way i get more free time with a people i love family stuff.. and etc... :D so in the end i need a lot of power :D

LeftieBiker
Posts: 9428
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: Active 12v to interior.

Sun Mar 25, 2018 1:39 pm

This will likely end in tears as they say, but here is one BIG tip: Do NOT use the Accessory mode to run accessories. If you are in the car, always use Ready mode (yellow-green car icon lit, car ready to drive) to keep the DC-DC converter running the accessories. You will still likely have to use a battery maintainer, and I strongly suggest you install a larger deep cycle or at least "marine" type battery. No make that definitely a deep cycle battery, preferably AGM type.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

Markokk888
Posts: 19
Joined: Wed Mar 21, 2018 4:16 pm
Delivery Date: 21 Mar 2017

Re: Active 12v to interior.

Sun Mar 25, 2018 2:47 pm

Well thanks for the advices but is there any big reasons to worry that much ? what can possible happen is i drain the 12v battery dead and that's it.

LeftieBiker
Posts: 9428
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: Active 12v to interior.

Sun Mar 25, 2018 3:23 pm

Markokk888 wrote:Well thanks for the advices but is there any big reasons to worry that much ? what can possible happen is i drain the 12v battery dead and that's it.


That's it if you don't mind replacing 12 volt batteries like wiper blades. Oh, and when the 12 volt battery fails it can take the brake assist with it, and/or strand you on the road.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

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