At the end of last year I wasn't driving my car much, it was sitting for weeks at a time and it needed a jump when I did take it out but would then be fine if it didn't sit the next day. I put it in the garage on the battery tender over the winter but it wouldn't take a charge, I think it was just too low. For the entirety of last year I used a PC680 battery (that I bought used) and I was driving the car about every day unless it was downpouring, it didn't sit much last year.

The beginning of this year I got a new battery. took the car out a handful of times and it worked fine but then as it sat longer it drained down and wouldn't take a charge. I have 2 s2ks so my black one sits a lot and I daily the other. I never experienced this issue before when I was driving the black car regularly. I got a new pc680 under warranty and it seemed fine until the other day. Since replacing the battery for the second time this year I only drove the car maybe one or two times over the past 3 weeks i'd say. Last sunday I put the top down to show someone my cage then put it back up, come Wednesday the car wouldn't even light up the dash when I put the key in.

Something is draining my battery and I have no idea what it could be. My dome light is off so that's out of the question. The only other thing I can think of is my izze air pump delete. I have a lot of mods on my car but nothing that should be drawing power when turned off. I've never had problems when I drove the car regularly but now I am having issues because my car sits for weeks at a time. I remember challenge took their air pump delete kit off the market because it was draining batteries when the car was off. Is the izze kit designed the same way? Anything else I should check for drawing power? i'm a bit stumped at this point. I just bought a optima battery charger in hopes of saving this new pc680 because i'm not sure i'll be able to get a new one the second time around.

 

Do a battery drain test on whatever aftermarket parts u have that is hookup to battery power. Use a test light n connect it between the power cable n battery then start pulling fuses from ur aftermarket electronics one at a time n see which one turns off the test light.

 

I've seen aftermarket alarm systems drain batteries like this, do you have one ?

 

nope.

the only aftermarket electrical things I have are:
izze air pump delete.
water pump for my sc.
valentine 1.
boost and air/fuel gauges
clipped wire for top down while rolling mod
alpine radio

I know none of those things are drawing power when the car is off. the alpine has a power wire, I suppose that may draw a very small amount just to retain memory but in a week or two I don't think that should be killing my battery. it's never been a problem before. everything else is wired to ignition power, I have no idea about the izze air pump delete though.

 

http://www.wikihow.com/Find-a-Parasitic-Battery-Drain

 

That is a head scratcher... my 01 used to do the same thing when it was still new (no mods whatsoever). The dinky little battery would die if I let the car sit for several months. I ended up just pulling the negative cable on the batt whenever I put the car away. Kind of a pain in the ass having to deal with, but it worked. Hope you figure out where the draw is coming from.

 

from what i read those dry cell batteries are not good at all and will even die if the radio is left on for 15 minutes. They require long trips to recharge and are not recommended for city/in town driving.
I would buy a real battery and see if the problem persists. I doubt it will.

 

I have had a pc680 battery for over a year with no issues until recently.

thank to Dwight for the wikihow, i'll do that and try to see where my draw is coming form

 

Working in a honda dealer for 2 years, I saw hundreds of a/c relays sticking on and killing batteries across many models. Worth a shot to check.

Sent from my Galaxy Slll

 

I have the ac removed from my car but the relay is still there. that will definitely be the first thing I check/pull with the multimeter on. Thanks!