Comments on: How to Connect Two 12 Volt Batteries in Series for 24 Volts

By: Paddy Fitzppatrick

Paddy Fitzppatrick — Sat, 19 May 2012 16:20:38 +0000

As a disabled person regarding the replacement of batteries for my power chair. There are not many battery retailors here in South Africa who are able to give me any reliable infomation and advice. I seem to be having trouble getting units that last longer than one year although I do have a second chair with a set of 12v gel batteries that have lasted me well over 4 years now. The drive motors are 24v each. Your article has deen a great help but it would be great to hear what batteries you would suggest I pruchase.

By: Jimbob

Jimbob — Mon, 14 May 2012 01:04:49 +0000

Andy.
+ to + and – to – two batteries of same capacity would double the life of single.

By: Andy

Andy — Fri, 11 May 2012 00:27:24 +0000

Is it possible to hook 2 12 v batteries together and still get just 12v? I am just looking to make my trolling motor power last longer?

By: matthew short

matthew short — Mon, 07 May 2012 17:50:08 +0000

Would either way of wiring the batteries make any difference to the charging process with regard to balancing and would Larry’s way cause more problems if one of the batteries had deteriorated would this hinder the charge for the battery its connected in series with…. Due to it having a high resistance because electricity will always take the path of least resistance

By: Jim

Jim — Tue, 06 Sep 2011 16:22:42 +0000

So, for my motorhome, do I want the batteries in parallel or in series? The only large motor that runs off the battery is the slide.

By: TALLEY

TALLEY — Sun, 04 Sep 2011 22:22:20 +0000

I have a question on 12vdc charging systems.
Can you take an 12vdc to 120vac inverter powered by a 12vdc 8oo amp car battery and charge the same battery with a 12vdc 6 amp 120vac Charger plugged in to the same inverter?
like a loop..?

By: sainju

sainju — Mon, 11 Apr 2011 15:10:08 +0000

how to charge a 12 volt battery with two 12v chargers?

By: Ike

Ike — Thu, 24 Mar 2011 18:44:46 +0000

how do I connect eight 12 volt battery to get 48volt at the terminal?

By: Ike

Ike — Thu, 24 Mar 2011 18:42:48 +0000

How do I connect eight 12 volt battery to give me 48volt?

By: Richard

Richard — Sun, 06 Jun 2010 03:47:50 +0000

I have a question along the same line, but slightly different. I need a battery box with only two out terminals; one +, and one -. I will have a switch (I assume it will be a dbl. pole, dbl. throw, ctr. off) inside the box. With the switch in one [on]position I need 12 v. out. With the switch in the other [on] position I need 24v. I have done this in the past, but cannot remember how. To charge all the batteries at once, the switch needs to be in the 12v. poaition. In my case, the batteries will be about 8 amps, so huge relays are not needed. How did I do it??