Running 24V on two 12V batteries

[bwibwi]

Hi, can I connect two 12v batteries in series to get 24v and also each battery has individual connectors connected to 12v alternator from engine for charging? Would this cause problem?

Or what type of converter (if there is one) that can do 12v to 24v with max. 50amp.

Another option I just thought of is maybe a 24v battery but with a 12 to 24v 20amp converter to connect the 12v alternator to charge 24v battery.

Which option would work better?
Thank you.

 

[berkeman]

You cannot connect the batteries in series and in parallel at the same time. As you have been told in this other thread, it will be difficult for you to do what you want with low voltage:

https://www.physicsforums.com/showthread.php?t=198581

 

[ravenprp]

Yes, it is possible to connect two 12V batteries in series to get a 24V output. This is commonly done in many applications where a higher voltage is needed. However, it is important to note that both batteries need to be of the same type, age, and capacity for optimal performance and safety. Additionally, using individual connectors to connect the batteries to a 12V alternator for charging may cause issues as the alternator may not be able to handle the higher voltage. It is recommended to use a dedicated 24V alternator for this purpose.

As for a converter, there are many options available that can convert 12V to 24V with a maximum of 50 amps. It is important to choose a converter that is suitable for your specific needs and compatible with your batteries and alternator. It is also important to consider the efficiency and safety of the converter in your decision.

The option of using a 24V battery with a 12 to 24V converter to connect to the 12V alternator may also work, but it is important to choose a converter with the appropriate amperage rating to avoid overloading the system.

In conclusion, both options have their pros and cons and it is important to carefully consider your specific needs and choose the most suitable option for your system. It is also recommended to consult a professional for assistance in choosing and installing the appropriate components for your system.