2 batterys?
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=109610
Printed Date: May 03, 2024 at 12:31 AM
Topic: 2 batterys?
Posted By: standbackimapro
Subject: 2 batterys?
Date Posted: December 09, 2008 at 2:03 PM
my friend has a 97 dodge ram 1500, he just added another battery
someone said it would make it a 24volt system, is that true? can it do any damage
Replies:
Posted By: DYohn
Date Posted: December 09, 2008 at 2:31 PM
standbackimapro wrote:
my friend has a 97 dodge ram 1500, he just added another battery
someone said it would make it a 24volt system, is that true? can it do any damage
If you wire two 12V batteries in series then it will create 24 volts. Wire two 12 V batteries wired in parallel and it remains a 12 V system, but with more current capacity. Anyone who unintentionally wires batteries for 24V in a car is too ignorant to be working on a vehicle electrical system and deserves the fried electronics they will get. But it is fine if that is what they planned to do. In that case, it would only be used for some specialized 24V load, like a winch or something, and the vehicle would tap between the batteries and still get 12V. ------------- Support the12volt.com
Posted By: audiovibe-mike
Date Posted: December 09, 2008 at 2:38 PM
DYohn] wrote:
p>standbackimapro wrote:
my friend has a 97 dodge ram 1500, he just added another battery
someone said it would make it a 24volt system, is that true? can it do any damage
Anyone who unintentionally wires batteries for 24V in a car is too ignorant to be working on a vehicle electrical system and deserves the fried electronics they will get.
I lol'ed. I have to give customers that talk from time to time. ------------- Have you ever seen an Acura with them butterfly doors???
Posted By: standbackimapro
Date Posted: December 09, 2008 at 9:39 PM
so it would be okay then if he ran the positive from the original battery to the positive on the other, then grounde the other bat?
Posted By: haemphyst
Date Posted: December 09, 2008 at 10:46 PM
Yep.
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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: xplorin16
Date Posted: December 10, 2008 at 10:49 AM
What else did he upgrade? Did he just add another battery to stock alt and batt?
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Advanced MECP
Posted By: whiterob
Date Posted: December 10, 2008 at 12:51 PM
It's not typically good to mix different batteries is it? Doesn't that shorten the life of the batteries.
Posted By: soundnsecurity
Date Posted: December 10, 2008 at 1:42 PM
i dont see how it would shorten the life of the battery, it's just voltage
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Posted By: audiocableguy
Date Posted: December 10, 2008 at 6:26 PM
Batteries of different age or type do not charge nor discharge the same.
You have one source, alternator, that charges the battery(s) It isn't smart enough to know which battery needs more or less charge. So it sends out the same to both, either overcharging one or undercharging the other. it's not uncommon to have one battery discharge into the other just sitting, starting the whole unequal charging cycle again. These cycles tend to shorten the battery life.
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