Question about Car Audio & Video

1 Answer

Two car batteries @ 24-volt, would like to go to 15-volts

Iwould like to connect two 12-volt batteries to make 24-volt,would like to power an amp at 15-volts, ( looking for the extra amps), how can I do this

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 655 Answers

Hello j37p,

You will need a thing called a "DC to DC Converter". Here's a link to one place that makes them: http://www.powerstream.com/
One model they have is the PST-D24/12-800. It will accept 20-28V input and has an adjustable output from 12.5-15.5V.

I'm hoping that you are not planning on trying to charge 3 batteries with your vehicle alternator. You would not want 2 12V batteries in series anywhere near the vehicle electrical system. They would definitely burn stuff up. You'll also want to be thinking about how to keep the dc converter and your amp(s) cool. Believe me, they will be getting hot and require some serious airflow.

Hope this helps.

Posted on Apr 14, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

How to wire two extra 12v batterys to a 24v mobility scooter to increase the amps


Connect the two extra 12 volt batteries in series to get 24 volts. Then connect this new 24 volt supply in parallel to existing 24 volt battery supply.

Jan 30, 2017 | The Health & Beauty

1 Answer

My son and I have 2 12 volt batteries which should be drawing 24 volts to our trolling motor but is not. We have a separate 12 volt starting battery what is going on.


If you connect 2 12 volt batteries in series to get 24 volts and you don't get it, then one of the batteries has a bad cell or you have a poor connection between the two.

Apr 26, 2016 | Boating

1 Answer

How to wire rhe batterys for 24 volts... Example pos. To pos. Or neg. To pos. Ther are two batterys 12 volts


if you want the same voltage but with increased capacity connect positive to positive and negative to negative on each successive battery ---connected in parallel
example 6 X 12 batteries each of 200 crank hours will be equal to 12 volts and 1200 crank hours ( good for mobile fridges , winches , battery hoists etc)
if you want to increase voltage in the bank then connect positive to negative for each successive battery ---connected in series
for example
with 6 X 12 batteries of 200 crank amps you will have 6 times the 12 volts which equals 72 volts and the current flow is increase from 200 crank amps to exceed the 1200 crank amps because of the electrical principles and formula I think it works out to be around 72 times the 200 crank amps ( I am sure that there are mathematicians out there that will adjust the sum to make it correct)
However I think that you get the idea
when charging batteries it is always positive to positive with the battery leads to the first battery in the bank and the difference is if in parallel the charger has to be big enough the charge at the accepted rate of the batteries ( 12 volts charge at 14.5 volts and around 20 amps an drop back as the batteries charge
when the batteries are in series it all changes and best talk with a good battery supplier as to how it is set up and if you need to change the charging circuit and equipment

Jul 19, 2015 | Cars & Trucks

2 Answers

Okay, I'm working on a scooter for my nephew that originally came with (2) 12 volt 12Ah batteries minus the charger. and I know I need to replace them with (2) batteries of the same 12 volts and lets


not exact, to charge apropiate needs 10% more than nominal voltage. if not, will not charge the batteries.
And the charger its very important because you can over charge the battery.An example,if you have a 12 Amps Batteries each one if you put it in series will be 24 Volts.at parallel conection will be 12 volts but the double of Amps.
At serial connection will be 12 Volts the amps will be the same but the volts will be 24.

The charger at 12 Volts must be 13.8-14.5 DC Volts and divide the Amps in Hours.
The charger at 24 Volts must be 26-28 Volts. to charge well.

The charger for 12 amps batt example must charge 2 amps per hour at 6 hours = 12 Amps.(2 Amps Charger by 6 Hours Charging= 12 Amps.(Fully Charged.
3 Amperes Charger needs 4 Hours to charge 12 amps Batt.
5 Amperes Charger needs 2 Hours charging an a quarter
All of this is at DC Current.

Luck.

Oct 18, 2014 | UPG 12V 12Ah Electra Scoot-N-Go 88615...

1 Answer

30amp auto shutdown fuse blows is it alternater


The ASD relay supplies battery voltage (12+ volts) to the fuel injectors and ignition coil(s). With certain emissions packages it also supplies 12-volts to the oxygen sensor heating elements. The Fuel Pump Relay is a separate relay controlled by the ASD relay input to the PCM. Fuse #12 (10amp) provides 12 volts to the coil side of both the relays and the ignition switch. Fuse #6 (30 amps) supplies 12 volts to the output side of the relay. Fuse #16 (15 amp) from the relay output to the Oxygen Sensors and Fuse #26 (15 amp) relay output to the PCM. Fuse #24 (20 amp) is Fuel pump relay output to fuel pump. Fuse #19 (10 amp) supplies 12 volts direct to the PCM.
look for burned or melted wires in the offending circuit.
sounds like you wiggled a wire while installing new relay.

Mar 06, 2013 | Cars & Trucks

1 Answer

Starts with a jump but cuts off soon as cables are disconnected


Check your batteries voltage you need at least 12 volts.If you don't have 12 volts then put the battery on a 2-4 amp charge for 6-8 hours.Then if the battery does'nt have 12 volts get a new battery.If your battery has 12 volts afterwards and still cuts off then your alternator is faulty.With the engine running your alternators power wire should show 13-15 volts coming out.

Feb 03, 2012 | 2004 GMC Sonoma

1 Answer

20,000 watts capacitor meter reading 13.9 with 2 battery & 250 alternator


Hello! The required voltage is 24 volts...which means two 12 volt batteries connected in series...It sounds as if you have two 12 volt batteries connected in parallel...Which doubles the amps and leaves the voltage at 12 volts...Connect the negative of one battery to the positive of the second battery...Then from the positive of battery #1 to the negative of battery #2 is the required 24 volts for the Kole...Guru...saailer

Jan 17, 2012 | Kole audio 20 Farad Digital Car Capacitor...

2 Answers

Wanting to install motorguide 24v trolling motor in boat, will it work on just 12 v system


No. you can put in extra batteries and use it, but you must remove you charging system from them to use it that way. Not really practical.

Mar 21, 2010 | Electrical Supplies

1 Answer

WHAT TEST CRITERIA CAN I USE FOR THIS PACK


This thing is a beast! What criteria you ask? What do you want to jump? The answer.... any damn thing you want!
3200 peak amps is huge.
1600 peak amps is huge! You have got it covered here friend.

  • 3200 peak 12 Volt amps.

  • 1600 peak 24 Volt amps.

  • Integrated voltage selection switch.

  • LED battery status indicator.

  • Automatic recharging.

  • 60" Heavy-duty cables.

  • DC outlet to power a variety of 12 Volt accessories.

Sep 26, 2009 | Solar ES1224 Truck PAC 3200 Peak Amp,...

1 Answer

24 volt charging problems .2 12 volt batteries 1 battery 16volts and the other about 9-10 volts


A 12 volt battery is actually 13.2 volts fully charged. If you are reading 16 volts, you are probably getting extranious voltage from the system somewhere, especially if the vehicle is running when you check the voltage. The alternator will put out about 15-18 volts to charge the battery normally, and yours may put out 28-32 volts to charge them in series, but the batteries, when disconnected, should never read more than about 13.2 volts each. Typically, it will read about 12 1/2 volts when disconnected. COMPLETELY DISCONNECT BOTH OF THE BATTERIES. If you still read 16 volts when it is disconnected, you must have a bad meter because the battery can't produce that much voltage, no matter what. (Six 2.2 volt cells connected in series inside the case.) Put the meter on a known good battery on another car that is not running and see if you get the same reading. It sounds like the other battery is almost dead, regardless, and it sounds like your series/parallel switch may be malfunctioning. (That is the switch that puts the battery in series to run the 24 volt starter, then puts the batteries in parallel to run the remainder of the vehicle on 12 volts. This is all assuming that you have a diesel vehicle with a 24 volt starter and that is why you have two batteries.

Aug 19, 2008 | Toyota Land Cruiser Cars & Trucks

Not finding what you are looking for?
Car Audio & Video Logo

Related Topics:

150 people viewed this question

Ask a Question

Usually answered in minutes!

Top Car Audio & Video Experts

xxxxxx xxx

Level 3 Expert

4861 Answers

yadayada
yadayada

Level 3 Expert

76070 Answers

The Knight
The Knight

Level 3 Expert

74185 Answers

Are you a Car Audio and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...