battery problem da6

right guys head is wrecked

the DA6 sometimes does not start cause the battery does be dead…

if i stick it on the battery charger over night it will be fine for a day or 2 but then eventually it will go dead again

i dont think its the alternator as in not getting any dash lights…iv e also checked the belt and its tight

its like something is running it down but ive checked everything i can think off and nothing has power with the keys out

the only aftermarket things i have wired in are a apexi rsm and apexi turbo timer.(both have no power when keys are out)…and the apexi turbo timer volts read 14.1v when car is running.

the car has also gone through 3 new batterys in the last year

anyone have any idea what could be running it down or if im missing anything?

or im thinking when i start it every day or 2 just ticking over with the odd rev isnt enough to charge it?

the car on idle when warm is about 700rpm?to low?

thanks if anyone can help…sick of charging a battery

If you find out let me know, I have the same issue lol

First thing I’d start with is to check the current draw with everything off