In this video you can learn how you can make battery holder for 2 AA batteries,how to proper solder a electric wir… | Life hacks youtube, Life hacks, Diy life hacks
4 x AA Battery Holder with On/Off Switch : ID 830 : $2.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Battery Holder With Switch - 4 x AA [Battery-Holder-4xAA] - US $0.60 : HAOYU Electronics : Make Engineers Job Easier