Charging 12v lead acid battery

Reply

  #1  
Old 03-17-14, 02:56 PM
Member
Thread Starter
Join Date: Feb 2014
Location: Canada
Posts: 33
Received 0 Votes on 0 Posts
Charging 12v lead acid battery

I have lost the charger for a 12v 4ah lead acid battery. I have many other battery chargers at home and I'm wondering if I can use any of them to charge the battery. Is there a specific volt and amp output range that the charger needs to have in order to charge the battery
 
Sponsored Links
  #2  
Old 03-17-14, 09:33 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 52,589
Received 337 Votes on 315 Posts
It may take a little experimenting with your chargers to see which one, if any, works well.
A 12vdc at 50-100ma would be ok. Up to 500ma should be ok. You can't exceed 2.40v per cell or 14.4vdc. An ideal float voltage is 2.25v per cell or 13.5vdc.

What do you have around that's near 12vdc. List the voltage and current that's on the unit.
 
  #3  
Old 03-18-14, 10:12 AM
Member
Thread Starter
Join Date: Feb 2014
Location: Canada
Posts: 33
Received 0 Votes on 0 Posts
Re

I have a 12vdc 200ma lead acid battery charger for my lawn mower. I also have a 14.4v smart car battery charger but it doesn't detect the battery for some reason.
 
  #4  
Old 03-18-14, 10:17 AM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 52,589
Received 337 Votes on 315 Posts
The 12vdc 200ma charger should work well. The smart charger is either defective or there is not enough voltage in the battery to turn it on. Many smart charger need to see better than 10v on the battery or they'll ignore it.
 
Reply

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
Display Modes
 
Ask a Question
Question Title:
Description:
Your question will be posted in: