Little Alarm System powering problem

[milp]

Hey guys,

I've got a great alarm system off of ebay. Admittedly, when you open it to set it up, it looks a bit weird since it is obviously home-made, but it works really great.

Now that thing has an internal Battery of unknown capacity. I have 3 backup batteries wired in my car. 2x 36Ah which are for powering the CarPc (They've lost a lot of their capacity and are probably close to dying, sadly) and one 6Ah Battery, which i wired up to my alarm system.

I used to have it wired so the Alarm system battery gets power from the alternator as soon as i hit a switch when the engine is on, because earlier it used to suck the life out of all my Backup batteries whenever my car was standing for longer than a day.

Anyways, now this little 6Ah battery that i dedicated to my alarm system was completely full when i wired it up that way, but now it's always empty and my alarm system doesn't get enough power anymore. I however want my alarm system to always run in standby mode, so i only have to press a key on the remote to enable it.

Any idea on how to solve my power issues? I thought about rewiring my solar panel to deliver some extra power to my alarm system, but a lot of times my car is in a dark garage anyways.

 

[Davren]

Leave a light on in the garage?

 

[milp]

Heh, i can't. It's a shared underground parking lot with automatic lighting. There is also no power outlet or else i could just hook my car up to a charger while it's parking, which would be awesome.

 

[MR_TOAD_INSTALLER]

Heh, i can't. It's a shared underground parking lot with automatic lighting. There is also no power outlet or else i could just hook my car up to a charger while it's parking, which would be awesome.

Your alarm should be powered by the cars battery the back up is usually to save the settings if car one goes flat