Help with battery backup solutions
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=33228
Printed Date: June 03, 2024 at 10:11 AM
Topic: Help with battery backup solutions
Posted By: Cptbrainiac
Subject: Help with battery backup solutions
Date Posted: June 03, 2004 at 12:22 PM
Well, this is my third time trying to post this... I'm trying to get help installing a battery backup for my Audiovox APS-996a. I originally had the DEI 520T, but I found out that I can't use this (not enough current or something). My question is, would one of these options work: https://www.autotoys.com/x/catalog/BATTERY_BACKUP_7_AMP_DELUXE_HIGH_POWER_p_1289.html https://www.alarmyourself.com/index.asp?PageAction=VIEWPROD&ProdID=89 I need to order this today, so if someone could get back to me as soon as possible, I would greatly appreciate it. Thanks!!
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Bill
Replies:
Posted By: iskidoo
Date Posted: June 03, 2004 at 2:49 PM
Email autotoys and ask the guys that work there. They would know if it was compatible. Or just order it and if it isn't what you need send it back.
Posted By: Cptbrainiac
Date Posted: June 03, 2004 at 4:04 PM
I wrote them and this was their response verbatim: Battery backups are designed to drive only the siren and the main
module.
It should be isolated from the parking lights, etc. Uh....Is that a yes or a no? ------------- Bill
Posted By: Teken
Date Posted: June 03, 2004 at 11:03 PM
Both links you provided above will not supply enough current to sustain an alarm system, while flashing the vehicles lights at the same time for any reasonable amount of time.
The link you provided from Auto Toys is most likely from Crimestoppers. All you need to do is wire in another additional 7 AH battery in parallel.
This will increase the current capability of the back-up supply. You may wire as many batteries you wish to obatin the needed current for the system.
Remember, all batteries must be fused, and the appropiate guage wiring should be used, along with the proper connection crimped and soldered to ensure long term safety.
You should also make a service relief port so as you may charge the batteries while the vehicle is sitting for any prolonged periods.
Remember, the batteries will be a load on the primary battery at rest at all times, unless you wire the appropiate relay(s) to isolate the system.
Your mean target is to never exceed 150 mA per hour. Doing so will leave you with a flat battery in less than 5 days, and less in colder climates.
Things to consider.
Regards
EVIL Teken . . .
Posted By: JWorm
Date Posted: June 04, 2004 at 1:09 AM
Alarm/remote starters that use the same power wire for the alarm functions as the remote start functions can't have a battery backup. I have never installed Pretige before, but it probably has two power wires each having 30 amp fuses or higher. No battery backups can supply that type of power. You would probably need about 20 of those little batteries to get it to even possibly work, and even at that point the batteries would probably die quickly.
DEI alarm/remote starts have two power wires with a fuse rating of 30 amps and then another power wire with a 15 amp fuse that powers the alarm functions. The battery backup only gets connected into the 15 amp circuit. The instructions with the unit also state to switch the alarm over to (-) parking lights to further decrease the power consumed on that 15 amp wire...probably to under 5 amps of current. That is why a battery backup can be added to a DEI system.
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