Battery connection

Is that really the case, or is its mechanical load too high for it?

better group the batteries for matching terminal voltages

I will assume by your question that you are new to this so I'll try to make it as clear as possible.

Each of your 12V batteries have a positive (+) terminal and a negative (-) terminal. Place two of the batteries lengthwise so that the + of the first one is right next to the - of the second one. Now connect the + to the - with a cable. The cable should be the right thickness to handle your current requirements. Now do the exact same thing with the other two placing them alongside the first two. Now if you look down on all 4 from above you will see that one extreme will have two +'s and the other extreme will have two -'s. Connect the two +'s together along with a cable to your 24V load which might be an inverter. Connect the two -'s together the same way and then add the negative cable also to your load.

Let's suppose your load is an inverter which will draw a maximum current of 100Amps. I would suggest that you make the interbattery jumpers using #6AWG or larger and the cables from the set of batteries to the inverter a #2AWG or larger. At 100Amps the #6 jumpers would carry 50Amps each since the load is spread over 2 sets of batteries but up to the inverter you only have one cable so it must handle 100Amps, hence the use of a #2.

Dear Sir,

Your question is not worth answering in this forum where in we expect

something thought provoking so that all can get enlightened. Better leave the

job to an electrician telling him what you need. Let me tell one story- In an army

interview for Officers, the candidates were asked how to erect a pole that should

be truly vertical. All gave answers but the best and expected answer came from

one , He said " I will call my havildar and order him to erect the pole & that he will

get a kick in his butt if it is not vertical" . This answer got him the job!!

Manroop, Chennai.