My 2012 SL Leaf has a small solar panel for just this purpose on the
roof of the car near the back. You are just doing the same thing yourself.
If you have a good charge regulator with your solar panel, the rest of
the 12 volt system won't even know that the 12 volt is charging. You
should buy a charge regulator that "float" charges the battery at ~13.5
volts. You just want to keep the 12 volt from going flat between uses.
Bill D.
On 7/14/2015 10:41 PM, harry henderson via EV wrote:
the 2013 nissan leaf has a known issue with its 12 volt battery either by lack
of charging or vampiric drains, i just got a 2013 leaf and found my 12 volt
battery at 4 something volts a couple weeks after i got it. carmax replaced it
but what they replaced was not the original battery. the battery they replaced
was only a month old and i don't know how many batteries this 2 year old EV has
used in its 10,000 miles of life.
i'm considering hooking up a solar charging unit to the battery. i've been
using solar charging systems on my 12 volt systems as their only power source
for 10 years now on my homemade EVs, however, this is a little different, since
it supposed has a DC/DC system. the options i've pondered include:
1. add an unregulated trickle charge [but with diode: 1-2 watts] to existing
battery
2. add a regulated [charge controller: 10-20 watts] to existing battery
3. add a regulated [charge controller: 10-20 watts] to a deep cycle [that is
larger than existing battery, maybe about 30% larger]
#3 is what i've been using very successfully for 10 years, but again this is
different situation, eager for other folk's suggestions
i realize this might void some or all warranty issues, please don't respond if
that is your only contribution, thanks
harry
Albuquerque, NM
current bike: http://www.austinev.org/evalbum/1179
current non-bike: http://evalbum.com/1000
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