Comments on: Connecting Batteries in Series and Parallel at the Same Time

By: Patrick from PH Nigeria

Patrick from PH Nigeria — Sat, 14 Apr 2012 19:53:34 +0000

Hi guys Patrick once again. Please is it possible to add 5 more batteries to my connection as detailed earlier? I’m hoping to make it 9 12v batteries in parallel and series to generate 24v for my inverter. Looking forward to your reply

By: Catherine Joens

Catherine Joens — Tue, 10 Apr 2012 12:58:28 +0000

That doesn’t work for me. I have two 12v 3eh batteries for a large farm tractor. Can you tell me how to connect them?

By: fernando

fernando — Sat, 07 Apr 2012 01:38:59 +0000

quiero hacer una pregunta no se si me pueden ayudar es la siguiente: para un auto a contol remoto que funcionan con tres baterias de 1.5v asiendo un total de 4.5v la incongnita es la siguiente una bateria de celular es de 3.7v la cual si la conecto a mi auto funciona pero q pasa si yo conect dos baterias de cel en paralelo a mi auto no se si daña algo de mi auto y si puedo conectar mas?gracias….

By: Brad

Brad — Wed, 14 Mar 2012 13:30:10 +0000

hello, new to this so bear with me! for an EV kart i have the option of 24, 3V cells at 120Ah in series giving me 72V and 120Ah, costing and weighing a considerable amount more than if i had 24, 3V cells of 40Ah connected in packs of 8 in parallel and 3 packs of the parallel batteries connected in series to give me less cost and weight for the same 72V and 120Ah. does this sound feasable to do? are there any disadvantages to using series/parallel circuits with regard to charging or life? Any help would be much appreciated, thanks.

By: Bindu

Bindu — Tue, 06 Mar 2012 11:59:50 +0000

sir,may I know the minimum ampere-hour(of a 12volt battery) required to supply a inverter of 70watt output
please answer me as earlier as possible

By: Bindu

Bindu — Tue, 06 Mar 2012 11:58:58 +0000

sir,may I know the minimum ampere-hour(of a 12volt battery) required to supply a inverter of 70watt output.
please answer me as earlier as possible

By: Patrick from PH Nigeria

Patrick from PH Nigeria — Sat, 18 Feb 2012 14:29:12 +0000

Thanks a million for the article. You are a real life saver. I’ve been using a 24v input inverter with 2 12v batteries. I just got an additional 2 batteries and was finding it confusing to make the connection. Thanks to your article, I’ve finally succeeded. I now have 4 12v batteries connected in series and parallel to generate 24v. I’m truly grateful bro! Keep up the good work!

By: Ram

Ram — Sat, 18 Feb 2012 10:22:43 +0000

what would be the average power if i connect 50Ah and 180Ah battery in series to achieve 24 volts system?

By: David

David — Fri, 13 Jan 2012 08:10:38 +0000

Thanks for the articles, they make for good geeky reading.

I have a question if anyone can help me.

I have a 12vDC starter motor that I want to put onto a gocart, I have several 7ah SLA 12v batteries, these are free for me so I will use them for now while I am learning, apparently this motor is rated at 19 amps, I think anyway, my question is If I setup my batteries 2 groups of 2 wired in series and parallel I will get 24volts at 14 ah, correct? so if I use your numbers ( 14ah * 90% = ?ah / 20 amps = ? hours * 60% = ?hours )

I think I got about 12 minutes run time with no load, Can you please advise if I have done this calculation correctly?

By: Michel

Michel — Sat, 01 Oct 2011 16:09:31 +0000

I have 4 12 volt batteries to get 48 volt for a scooter.

Can i connect these 4 batteries in parrallel and series as in Larry’s example and then charge them with one 12 volt charger ?