Go Back   EcoModder Forum > EcoModding > EcoModding Central
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 06-24-2013, 05:06 PM   #11 (permalink)
EcoModding Newb
 
redpoint5's Avatar
 
Join Date: Aug 2010
Location: Oregon
Posts: 5,499

Acura TSX - '06 Acura TSX
90 day: 28.39 mpg (US)

Lafawnda - '01 Honda CBR600 F4i
90 day: 47.32 mpg (US)

Big Yeller - '98 Dodge Ram 2500 base
90 day: 21.82 mpg (US)

Prius Plug-in - '12 Toyota Prius Plug-in
90 day: 79.06 mpg (US)

Mazda CX-5 - '17 Mazda CX-5 Touring
90 day: 28.87 mpg (US)
Thanks: 1,912
Thanked 1,930 Times in 1,383 Posts
I would invest in jumper cables before a PV charger. When your battery is dead, you want to start it immediately, not 8 hours from now assuming it dies during the day in the sun. That said, using one to maintain the battery of a vehicle that sits is a good use.

If your battery is still weak despite PV "maintaining" it, then you need a higher output PV. The battery will eventually fail from discharging so low.

__________________
Gas and Electric Vehicle Cost of Ownership Calculator







Give me absolute safety, or give me death!
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 06-25-2013, 08:11 AM   #12 (permalink)
EcoModding Alien Observer
 
suspectnumber961's Avatar
 
Join Date: Mar 2008
Location: I flitter here and there
Posts: 547

highcountryexplorer - '86 Nissan 720 KC 4x4 ST with fiberglass cap
90 day: 21.78 mpg (US)

Elroy - '03 Ford Focus ZX3 w/Zetec DOHC engine
90 day: 32.89 mpg (US)
Thanks: 6
Thanked 78 Times in 65 Posts
If I could find a flexible solar panel that was a long rectangle in shape....I'd RTV (silicone caulk) it to the top of my Focus and hard wire it into the system by running a wire across to the door opening.

A solid one like I have now COULD be used...just would need to fashion some wood blocks to make it conform to the complex shape of the roof....and keep it to the back.

I once mounted a custom made (DIY) set of louvers to the rear hatch window of a 280ZX using silicone caulk...stayed on there for 2-3 years at least...till I sold the car. It was made of wood and alum strips. The wood was treated with thinned varnish to seal it.

RTV of a certain kind is what is used to mount rearview mirrors to the inside of your windshield.
__________________
Carry on humans...we are extremely proud of you. ..................

Forty-six percent of Americans believe in the creationist view that God created humans in their present form at one time within the last 10,000 years. GALLUP POLL
  Reply With Quote
Old 06-25-2013, 04:53 PM   #13 (permalink)
Master EcoModder
 
Join Date: Jul 2008
Location: NY state
Posts: 483

XJ Cherokee - '00 Jeep Cherokee Sport
90 day: 12.96 mpg (US)

FoFO - '11 Ford Focus SE
90 day: 36.78 mpg (US)
Thanks: 1
Thanked 47 Times in 35 Posts
Quote:
Originally Posted by redpoint5 View Post
I would invest in jumper cables before a PV charger. When your battery is dead, you want to start it immediately, not 8 hours from now assuming it dies during the day in the sun. That said, using one to maintain the battery of a vehicle that sits is a good use.

If your battery is still weak despite PV "maintaining" it, then you need a higher output PV. The battery will eventually fail from discharging so low.
Eventually I need to take a day to figure out what the significant electrical draw is. I think it's something with the remote start system.
  Reply With Quote
Old 01-05-2016, 01:00 PM   #14 (permalink)
Liberty Lover
 
j12piprius's Avatar
 
Join Date: Feb 2011
Location: central california
Posts: 587

pris prius - '12 Toyota plug in prius
90 day: 71.09 mpg (US)
Thanks: 417
Thanked 83 Times in 60 Posts
Gasoline Fumes,

Great idea. I've ordered this charger for 18.79.

How did you splice the barrel plug to the dome wire, and which wire?

Quote:
Originally Posted by Gasoline Fumes View Post
I put it on the back of the sunvisor and wired it to the hot lead of the dome light. It doesn't directly increase fuel economy, but it makes me feel better about coasting home at night. I know that the partly-drained battery will recharge the next morning. I park facing the morning sun! The panel will also recharge a dead battery enough to start an engine. Of course it'll take a few hours, but it will do it.

  Reply With Quote
Old 01-05-2016, 01:35 PM   #15 (permalink)
EV convert
 
oil pan 4's Avatar
 
Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 7,230

Sub - '84 Chevy Diesel Suburban C10
SUV
90 day: 19.5 mpg (US)

camaro - '85 Chevy Camaro Z28

Riot - '03 Kia Rio POS
Team Hyundai
90 day: 30.21 mpg (US)

Bug - '01 VW Beetle GLSturbo
90 day: 26.43 mpg (US)

Sub2500 - '86 GMC Suburban C2500
90 day: 11.95 mpg (US)

Snow flake - '11 Nissan Leaf SL
SUV
90 day: 124.63 mpg (US)
Thanks: 171
Thanked 2,186 Times in 1,687 Posts
You do realize even a small unregulated solar panel can over charge and damage the battery?
I have found that putting the solar panel behind vehicle glass tends to cut panel output by around half.

I have 180 watts of solar on top of my suburban and I would not expect it to increase fuel economy unless the belt is removed from the alternator.

A small solar panel like that, with its output cut in half wont do squat.
Save your money, do aero mods.
__________________
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
  Reply With Quote
Old 01-05-2016, 05:59 PM   #16 (permalink)
Custom User Title
 
Gasoline Fumes's Avatar
 
Join Date: Oct 2009
Location: New York State
Posts: 1,140

Nut Wagon - '91 Honda Civic Wagon DX
Team Honda
Wagons
90 day: 67.84 mpg (US)

CRXFi - '88 Honda CRX XFi

Insight 256 - '00 Honda Insight
Team Honda
Gen-1 Insights

Insight 5342 - '00 Honda Insight
Thanks: 560
Thanked 498 Times in 286 Posts
Quote:
Originally Posted by johnlvs2run View Post
Gasoline Fumes,

Great idea. I've ordered this charger for 18.79.

How did you splice the barrel plug to the dome wire, and which wire?
Negative of the barrel plug to ground and positive to the positive wire feeding the dome light. Should be the only wire with 12v.
__________________
  Reply With Quote
Old 01-10-2016, 05:55 AM   #17 (permalink)
EcoModding Alien Observer
 
suspectnumber961's Avatar
 
Join Date: Mar 2008
Location: I flitter here and there
Posts: 547

highcountryexplorer - '86 Nissan 720 KC 4x4 ST with fiberglass cap
90 day: 21.78 mpg (US)

Elroy - '03 Ford Focus ZX3 w/Zetec DOHC engine
90 day: 32.89 mpg (US)
Thanks: 6
Thanked 78 Times in 65 Posts
I've now had 2 of the cheaper solar panels go bad on me....last one was being used under the windshield to keep the batt charged in my Focus....battery ended up flat or dead....it did recharge though.

Removed the panel...my guess...defective diode.

Could likely buy a new diode and solder one in....?

Batt cost = $100 or so?
__________________
Carry on humans...we are extremely proud of you. ..................

Forty-six percent of Americans believe in the creationist view that God created humans in their present form at one time within the last 10,000 years. GALLUP POLL
  Reply With Quote
Old 01-10-2016, 07:31 AM   #18 (permalink)
Master EcoModder
 
oldtamiyaphile's Avatar
 
Join Date: May 2009
Location: Australia
Posts: 1,385

UFI - '12 Fiat 500 Twinair
Team Turbocharged!
90 day: 44.93 mpg (US)

Jeep - '05 Jeep Wrangler Renegade
90 day: 18.09 mpg (US)

R32 - '89 Nissan Skyline

STiG - '16 Renault Trafic 140dCi Energy
90 day: 33 mpg (US)

Prius - '05 Toyota Prius
Team Toyota
90 day: 50.25 mpg (US)

Premodded - '49 Ford Freighter
90 day: 13.48 mpg (US)

F-117 - '10 Proton Arena GLSi
Pickups
Mitsubishi
90 day: 37.87 mpg (US)

Ralica - '85 Toyota Celica ST
90 day: 20.55 mpg (US)
Thanks: 286
Thanked 370 Times in 265 Posts
I have one and it died in very short order, maybe a month, and it was actually the panel that was bad.

I've gone to ebay flexible panels without problem. A bit more expensive, but they also put a decent charge into the battery.
__________________






  Reply With Quote
Old 01-10-2016, 10:09 AM   #19 (permalink)
Master EcoModder
 
Ryland's Avatar
 
Join Date: Jan 2008
Location: Western Wisconsin
Posts: 3,904

honda cb125 - '74 Honda CB 125 S1
90 day: 79.71 mpg (US)

green wedge - '81 Commuter Vehicles Inc. Commuti-Car

Blue VX - '93 Honda Civic VX
Thanks: 867
Thanked 432 Times in 353 Posts
I've used a few and never had one fail, but it's worth spending the extra few bucks on good solar.

The savings will really come from the lead acid battery lasting longer.
A one amp solar panel on a 40ah flooded battery should never be at risk of over charging it, if it was a plug in trickle changer then you'd want 100/1 ratio, it works because the amps going into the battery dip as it gets full and lead acid can handle it.
  Reply With Quote
Old 01-12-2016, 10:50 PM   #20 (permalink)
Liberty Lover
 
j12piprius's Avatar
 
Join Date: Feb 2011
Location: central california
Posts: 587

pris prius - '12 Toyota plug in prius
90 day: 71.09 mpg (US)
Thanks: 417
Thanked 83 Times in 60 Posts
barrel plug

Quote:
Originally Posted by Gasoline Fumes View Post
Negative of the barrel plug to ground and positive to the positive wire feeding the dome light. Should be the only wire with 12v.
Thanks. I finally got the housing apart and see there's only the one wire.

What did you use for the ground?

  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com