Announcement

Collapse
No announcement yet.

12v to 48v

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • 12v to 48v

    If I have a 12v battery bank with 4 100ah batteries in parallel now. If I put those 4 batteries in series to 48v for a total of 100ah. Lets say my load is 100 watts does my run time last longer with a 48v bank vs a 12v bank? I think there are allot more benefits to being in series than parallel for my battery bank. Also was thinking being I only have 4 100ah 12v batteries would it make more sense to make to strings of series for 24v and then parallel them in the end for 200ah? Thoughts?

    Mike
    Last edited by Svencool; 08-22-2015, 08:58 AM. Reason: After Thought

  • #2
    The battery capacity will be the same measures in watt hours weather those batteries are wired for 12,24,or 48 volts.
    Wire in series for 48 your batteries will thank you and last longer.
    NABCEP certified Technical Sales Professional

    [URL="http://www.solarpaneltalk.com/showthread.php?5334-Solar-Off-Grid-Battery-Design"]http://www.solarpaneltalk.com/showth...Battery-Design[/URL]

    [URL]http://www.calculator.net/voltage-drop-calculator.html[/URL] (Voltage drop Calculator among others)

    [URL="http://www.gaisma.com"]www.gaisma.com[/URL]

    Comment


    • #3
      Always opt for higher voltage if you have a choice, and never parallel batteries unless necessary.
      MSEE, PE

      Comment


      • #4
        Originally posted by Naptown View Post
        The battery capacity will be the same measures in watt hours weather those batteries are wired for 12,24,or 48 volts.
        Wire in series for 48 your batteries will thank you and last longer.
        So when the batteries are connected in series for 48V, you will need a 48V inverter, right?

        Comment


        • #5
          Originally posted by RatedPG View Post
          So when the batteries are connected in series for 48V, you will need a 48V inverter, right?
          Unfortunately yes. Although going with a higher voltage will reduce the need for large wires because the amp draw will also be lower and allow you to use more panel wattage. It will also allow you to build bigger battery systems by using lower voltage batteries (2, 4 & 6v) with higher Ah ratings instead of 12volt batteries with lower Ah ratings.

          Also going with a series wired battery system will allow the charging and discharging to be equal across all the batteries. That increases the chance of all the batteries having alonger life. Wiring in parallel increases the chances of one or more batteries not being equal and dying an early death.

          Comment

          Working...
          X