Subject: How does wiring batteries in series make light bulbs brighter?

As you increase the voltage of batteries wired in series this means you 
increase the batteries ability to "push electrons" out of the battery. I 
understand that you are increasing the energy of the electrons but how is 
this translated to what the electron does. Does it move faster ie more 
current? what does it mean that the electron has more energy? 
Doesn't this mean that more electrons would be coming out per sec? if not 
how why does the light bulb become brighter?

Re: How does wiring batteries in series make light bulbs brighter?