LeftieBiker
Posts: 7367
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: Heater In a Box

Fri Aug 15, 2014 2:17 pm

My own conclusion is that you can't avoid the inverter if you want real heat - you need 110+ volts to get effective output. I suggest you pick up one of the $25 heaters I used and try it.
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.

BrockWI
Posts: 572
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Delivery Date: 28 Mar 2014
Leaf Number: 423875
Location: Green Bay, WI.
Contact: Website

Re: Heater In a Box

Fri Aug 15, 2014 2:28 pm

I believe you are correct, and with a 105ah battery in the trunk I would have to run #10 wire to reduce loss, vs #16 to run 200w at 120vac as well.

I am trying to think of something I can leave on during the day though. I had a 250ah battery in the back of our VW TDI and a 12v seat heater I left on all day to keep the seat warm ready to go. My wife runs from one school to another maybe 2 miles a trip at all different intervals not knowing when she has to go to another school (school nurse with 8 building in her area) and the car never warms up, so it's something similar to that. The seat heater / cover pulled 60w or about 5 amps so the battery could run it all day. At least the Leaf will be better for these short unpredictable trips.
3 kw solar pv - XW6048 - 8 L16's
4 ton GSHP
2003 VW TDI 170k miles - 52 mpg lifetime
evse level 2 - Clipper Creek HSC-40
2013 S model with QC package Mar of 2013

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

Re: Heater In a Box

Fri Aug 15, 2014 4:29 pm

The seat heaters warm so fast, and provide so little cabin heat, that it would be a huge waste to run them all day. Running a 200 watt AC fan-forced heater might work, but I'd worry about safety. The heaters I used are at least ceramic disk type, with the heater not getting hot enough to initiate combustion - unless it malfunctions, maybe. If you decide to try that, I suggest you also try a Greensaver battery. I've never tested this with my Greensaver-equipped scooter, but the claim is that they don't sulfate when sitting partially discharged, because there is no sulfur in the electrolyte. Supposedly. A lead-acid battery would definitely suffer from sulfation if used as you intend.

My own suggestion would be a big lead-silicon battery (Greensaver type) in a battery box in a rear seat footwell, an 800 watt inverter with #10 gauge wiring, and one or two of the little ceramic heaters I used (can't remember the name - search the thread). You could also add a timer, to start the heat 15-30 minutes before the car is needed.
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.

BrockWI
Posts: 572
Joined: Fri Mar 28, 2014 6:28 am
Delivery Date: 28 Mar 2014
Leaf Number: 423875
Location: Green Bay, WI.
Contact: Website

Re: Heater In a Box

Fri Aug 15, 2014 6:25 pm

The 300w one I have is 12v ceramic type. It works quite well, but it's boxy.

The big problem is when she is at one school and working and then gets a call, she just has to hop in the car and go, drive for 5 min and then be at the next school for 10 minutes to maybe 2 hours, she never knows. That's why last year I went with the seat heater on all the time, with no intention of warming the cabin with it. She said she really liked it. If she works a 9 hour day at 5 amps that is only 45 ah. The battery I was using was a left over 10 year old SLA 245ah 12v battery from my last solar PV setup. So I didn't care if I killed it, but it held up just fine, but big and heavy.

We typically charge to 80% and she usually gets home about 30%, sometimes 10% sometimes 50%, it all depends on what schools call her and what she needs to do, maybe just running the Leaf's resistant heater for that 5 minutes of driving will work just fine. Hopefully this winter won't be as bad, last winter we had like 10 days it never got above 0F with lows in the -20F range and that's not wind chill numbers... :)
3 kw solar pv - XW6048 - 8 L16's
4 ton GSHP
2003 VW TDI 170k miles - 52 mpg lifetime
evse level 2 - Clipper Creek HSC-40
2013 S model with QC package Mar of 2013

LeftieBiker
Posts: 7367
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: Heater In a Box

Fri Aug 15, 2014 8:36 pm

If you have a Leaf that can use CarWings, can't she just start the climate control system as soon as she learns she has to drive? If it's an S, then yes, that's annoying. I was picturing all the seat heaters on, BTW. Leaving one on would make me nervous about fires, but consumption should be acceptable.
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.

LeftieBiker
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Joined: Wed May 22, 2013 3:17 am
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Location: Upstate New York, US

Re: Heater In a Box

Sat Jan 14, 2017 5:44 pm

Just bumping the topic up, as Winter driving is being talked about elsewhere.
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.

EVerlasting
Posts: 84
Joined: Tue Jul 09, 2013 1:20 pm
Delivery Date: 11 Jul 2013
Leaf Number: 017329
Location: Morristown, NJ, United States

Re: Heater In a Box

Sat Jan 14, 2017 6:38 pm

Propane fueled Heater Buddy may be an option if used safely. Leave the windows cracked open and allow direct air intake from Climate Control. This video is helpful: How to Set Up and Use a Mr Heater Buddy in an RV https://youtu.be/lOtXpil6t_E
2012 Nissan Leaf SL|25,000 miles
Weekly charging using public CHAdeMO station 7 miles from my condo apartment and occasional charging using EVSEupgrade L2 240v 12 amps. 11 capacity bars

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IssacZachary
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Delivery Date: 15 Nov 2016
Leaf Number: 420789
Location: Gunnison, CO, USA

Re: Heater In a Box

Mon Jan 30, 2017 12:04 pm

I found a heater that I'm seriously thinking of installing on my Leaf after driving around last night at only -10° (it's been much colder on many other days, but I didn't do much night driving until yesterday and so had the help of clear skies and sun to keep the window's defrosted and inside heated.) I was trying desperately to make it home on 45% charge from not very far away (8 miles I think) from and keep the windows defrosted from the inside and still hit the low battery signal. I didn't have any place to charge out there and the wife hadn't plugged in the car like I had asked her to before picking me up.

Anyhow, here it is:

Image

HS2000 Propex Furnace

It's about 12" long, 6" wide and 4" tall. I think it'll fit fine in the "spare tire" area in the rear. I can put a propane tank in the trunk when I need to use it. I'm just not sure how I'd route the hoses to heat the cabin.
2013 SL 50,000 miles.
12 bars until 44,300 miles on June 2, 2017. :D
11 bars current. :)
The Nissan Leaf is the fourth best long distance car for highway driving. >>Best Long Distance Cars<<

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

Re: Heater In a Box

Mon Jan 30, 2017 1:55 pm

Before I went that route, I'd try a larger deep cycle 12 volt battery (replacing the OEM in the motor compartment) and hardwiring an inverter so I could use 120 volt ceramic heaters like the ones I used in the prototype. You could then use a larger maintainer (2 amp or larger) to recharge the battery fully.
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
IssacZachary
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Posts: 568
Joined: Fri Jan 13, 2017 9:57 am
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Leaf Number: 420789
Location: Gunnison, CO, USA

Re: Heater In a Box

Mon Jan 30, 2017 2:10 pm

LeftieBiker wrote:Before I went that route, I'd try a larger deep cycle 12 volt battery (replacing the OEM in the motor compartment) and an inverter so I could use 120 volt ceramic heaters like the ones I used in the prototype. You could then use a larger maintainer (2 amp or larger) to recharge the battery fully.


I've been using a 120V 1,500W ceramic heater to aid the main heater with preheating in the mornings. It seems to do an excellent job if I leave it on for an hour. Shorter time should be fine too if using a deep cycle battery. I am afraid of freezing the deep cycle battery if it runs low though. And finding a place for it with up to 5 passengers is going to be tricky. I'll probably need some way to route it through some hoses.

The nice thing about the propane furnace above is that you can get 60 hours off of a 20lb tank. I'd need a how-many-amphour-battery to get just an hour of heat?
Last edited by IssacZachary on Tue May 30, 2017 1:47 pm, edited 1 time in total.
2013 SL 50,000 miles.
12 bars until 44,300 miles on June 2, 2017. :D
11 bars current. :)
The Nissan Leaf is the fourth best long distance car for highway driving. >>Best Long Distance Cars<<

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