$52.99 EBL 10-Pack 5000mAh 1.2V Size C Battery + Battery Charger for C D 9V Ni-CD Ni-MH AA AAA 
Batteries connected both in series and in parallel - Electrical Engineering Stack Exchange
Amazon.com: EBL 16 Pack of AA Batteries, 1.5V Double A Alkaline Battery Perfect for Game 
