Batteriy packs and voltages?

Question

http://www.batterystuff.com/batteries/AA-AAA-9V-NiMH/Pro1010.html

If I buy 4 of these, and pack them together (you could help me out by giving me few pointers), do i get a 48v battery pack?

Thx

Answer 1

Yes and no. You would get 48. BUT, only if you put them in series, not parallel.

Answer 2

You will get 60 Volts in series if you use all 40 of them. When you place batteries in series, you increase the voltage and not the capacity. You will need 32 of the batteries in series to make 48 Volts. The capacity will remain unchanged at 1000ma. If you want to increase the capacity run another bank of 32 Batteries in Parallel with the existing 32 battery bank to increase the capacity to 2000ma.  I would recommend getting some small 12 volt batteries and putting 4 in series to get 48 Volts (Actually get around 53 volts unloaded). A problem exists when you place batteries in Parallel, If one battery is stuffed it will try and discharge the others one through it, if it suddenly goes very bad, it can discharge a battery so quickly it may explode, this is not so concerning if they are small AA batteries, however, if you are using high current batteries it can be moreso. That is why manufacturers recommend that when placing batteries into things (Remote controls, etc) that the batteries be of equal age, capacity, brand and voltage, otherwise you can damage your equipment. Hope this helps mate.

Answer 3

Yes, if you put all 40 of them in series.

You need to buy 40 battery holders for that size, then wire them together, + to -

then you need a battery charger that works at 48 volts.

It would be easier to get 4 12v batteries.