Go Back   Home > Forums > >

Car audio battery question .
Car audio battery question .
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools
Old 24th November 2021, 11:41 PM   #1
caraudioguy2100 is offline caraudioguy2100
diyAudio Member
 
Join Date: Aug 2010
Default Car audio battery question .

I need to charge my battery for my audio system .

My power supply only goes up to 13.8 volts .

Is there a way to make a charger using a 7815 regulator or does anyone have any ideas ?

Here is a pic of what the manufacturer recommends to charge the battery . The battery needs to be charged to atleast 15 volts

Just wondering if there was another way to make one since my truck will be sitting another week or so and don’t want the battery to sit out in the garage completely dead while it’s cold outside
Attached Images
File Type: jpg EEEC9299-AEAE-46D1-9C21-8E901CA2624C.jpg (104.5 KB, 37 views)
__________________
Multimeter:Klein Tools MM6000 Hakko FX-888D soldering station Hakko FR-300 desoldering gun dual channel oscilloscope 2 ohm 100 watt resistor Pyramid 40 amp power supply and a kenwood KDC-248U fornsiganl source . M02020 Testoscillator

Last edited by caraudioguy2100; 24th November 2021 at 11:43 PM.
  Reply With Quote
Old 24th November 2021, 11:46 PM   #2
Perry Babin is offline Perry Babin  United States
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
What's the rated battery voltage?
__________________
Anyone who purchased the repair tutorial, email me (babin_perry@yahoo.com) if you want to download the latest version.
  Reply With Quote
Old 24th November 2021, 11:49 PM   #3
caraudioguy2100 is offline caraudioguy2100
diyAudio Member
 
Join Date: Aug 2010
15.6 volts
__________________
Multimeter:Klein Tools MM6000 Hakko FX-888D soldering station Hakko FR-300 desoldering gun dual channel oscilloscope 2 ohm 100 watt resistor Pyramid 40 amp power supply and a kenwood KDC-248U fornsiganl source . M02020 Testoscillator
  Reply With Quote
Old 24th November 2021, 11:58 PM   #4
Perry Babin is offline Perry Babin  United States
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
15v will protect it but won't charge quickly (or likely completely).

The internal rectified voltage in most DC power supplies will be 20-24v. This can be confirmed by measuring at the output of the rectifiers in the supply. You can probably use a standard dimmer to limit the voltage to about 16v or whatever you want. This isn't for a permanent solution.

You can likely modify the regulated output to go well above 13.8v if you want to do that to a supply that you want to dedicate to charging this battery.

If the battery is dead, a standard charger will bring it up well above dead (depending on how you define dead).
__________________
Anyone who purchased the repair tutorial, email me (babin_perry@yahoo.com) if you want to download the latest version.
  Reply With Quote
Old 25th November 2021, 09:26 AM   #5
UserAbuser is offline UserAbuser  Australia
diyAudio Member
 
Join Date: Sep 2019
automated c-tek charger. problem solved.
  Reply to this post

Reply


Car audio battery question .Hide this!Advertise here!
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Voltage divider noise into a battery powered dac - battery voltage a bit high bigino Digital Line Level 12 9th October 2017 03:06 PM
Battery powered phono stage battery type advice Hikari1 Analogue Source 5 10th September 2013 10:00 PM
Car amp killing battery or car xstation360 Car Audio 10 17th December 2010 10:09 PM
7w 300b vs 350w Car audio observation (car loses) wicked1 Tubes / Valves 9 3rd October 2010 03:14 PM
Battery Charger for 15V Li-ION Battery Pack ??? Jan Dupont Parts 2 11th April 2009 03:18 PM


New To Site? Need Help?

All times are GMT. The time now is 09:41 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Copyright ©1999-2021 diyAudio
Wiki