Lego battery pack mod
My Lego battery pack mod is a mod is a mod for the Lego power functions 6aa battery pack the newer type and the battery pack I use is one off of eBay this battery pack has 9.6 volts and it should not do any damage to your power functions I have used it with my Sbrick and the power functions receiver but if you where to use 1.5 volt batteries then it would kill you power functions
This is the link to the battery pack: http://m.ebay.co.uk/itm/4-8v-6v-7-2v-...