battery voltage increase question

[Dashrynn]

so i want to increase my voltage a simple way with materials i have sitting around.



I want to take this battery http://www.batteryspace.com/lifepo43...napproved.aspx



and put it in series with this battery http://www.batteryspace.com/lgli-ion...18650cell.aspx



I know about increasing voltages with equal batteries just not sure if it can be done with unequal amps