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Old 08-14-2009, 04:00 PM   #20 (permalink)
jedi_sol
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Join Date: Mar 2009
Location: Tustin, CA
Posts: 929

2013 STi *SOLD* - '13 Subaru Impreza WRX STi
Subaru
Sports Cars
Team Turbocharged!
90 day: 26.59 mpg (US)

1996 Geo Metro *RETIRED from Ecomodding* - '96 Geo Metro Base
90 day: 58.68 mpg (US)
Thanks: 368
Thanked 380 Times in 238 Posts
I'm trying to plan how big of a solar panel/deep cycle battery is needed for my system. Here are my readings. They seem a bit high? Does anything seem off? (In terms of my testing procedures or my results)

Here is how I tested my system to get AMPS.
1) Engine Off
2) Disconnect + battery cable
3) with DMM on AMP mode, hookup +probe to +battery cable, -probe to +battery post.
4) Turn key to ACC ON

To get AMP readings for the engine idle, I disconnected the DMM, started the engine, disconnect battery cables, and hooked up DMM on AMP mode.

To get voltage readings, put everything back to normal, put the DMM back to voltage mode, re-did all of the accessories tests, and noted the voltage drops.

Recalculated

Standby (ACC ON after fuel pump primed) -- 12.1v -- 4.68amps --56.6w
Parking light, dash lights high --54w
Head light low, dash lights high --91w
High beams, dash lights high --100w
Brakelights only -- 48w
Reverse lights only --37w
Stereo volume 0 --4w
Stereo volume 30 -- 4.6w
Stereo volume 40 --6.4w
Fan Low, Interior -- 29w
Fan Hi, Interior -- 107w
Engine Idle --14.2v --6amps -- 85.2w
Engine 2500 --14.4v --6amps -- 86.4w

Thanks for your help!
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See the rest of the Sti project log:
http://ecomodder.com/forum/showthrea...log-26612.html

Last edited by jedi_sol; 08-14-2009 at 07:08 PM..
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