9 Volt Battery Backup
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=22165
Printed Date: May 14, 2025 at 5:13 PM
Topic: 9 Volt Battery Backup
Posted By: bradleonard
Subject: 9 Volt Battery Backup
Date Posted: December 01, 2003 at 1:20 AM
Hey I am looking for a diagram explaining how to build a 9 volt battery backup that will maintain presets and other computer information with the vehicle battery is disconnected. Do any of you use such a device when you disconnect the battery? If no one has a diagram, let me know where i can buy one, or even brand and model name of the device.
Thanks
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werd
Replies:
Posted By: defective
Date Posted: December 01, 2003 at 1:54 PM
umm... i'm not sure of where to buy it but i've seen devices that you plug in the cigarette lighter socket and they will perform this function, sorry for no links
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Posted By: auex
Date Posted: December 01, 2003 at 6:26 PM
As far as I was aware, all this is, is a cig lighter plug with a 9V battery tied to it.
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Posted By: bradleonard
Date Posted: December 02, 2003 at 1:30 AM
well there is more to it, there is some ciruitry that prevents backfeeding and something else from occuring.
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