Quick Question...how do i monitor my in-car battery level - Jeep Wrangler Forum
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Old 08-23-2013, 09:06 PM   #1
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Quick Question...how do i monitor my in-car battery level

My question is really simple. I'd like to be able to see how much "juice" my cars battery has left. The reason is that i may want to leave the lights or the stereo running while my car is off.

Here's a scenario that has already occurred: I'm at the drive in, and i have to leave the car's stereo on to be able to listen to the movie. I kept turning the car on every 30 minutes and left it running for a bit, then turned it off - just because im thinking doing so charges the battery (but i dont know if it actually does)

So, is there something i can buy and get installed so that i can see the level of "juice" my battery has?

Or does anyone have any tips that will help in such cases?

thanks.

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Old 08-23-2013, 09:25 PM   #2
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Warning: It's said that when ever you call a Jeep, a "car" a kitten dies.



That being said, you can always install an ammeter for around $50


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Old 08-25-2013, 08:32 PM   #3
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great, thanks!
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Old 08-26-2013, 09:03 AM   #4
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An ammeter won't show how much of your batteries power is left, only how much is being drawn or charged at the moment.

A high quality battery monitor might be what you want, but they require a shunt be installed as well as a monitor. A less expensive and more practicle idea is to monitor the battery voltage. The following chart shows approximate % charge of 12v batteries. You NEVER want to go below 50% unless you enjoy replacing batteries.


I believe this thing would do the job...

12 Volt Battery Voltage Monitor
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Old 08-27-2013, 07:38 PM   #5
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Great idea and great info. Thanks a lot, i'm going to get it!
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