yes, you can use 1/10 battery on 1/12. Lot of ching is using it at 橫洲. Need a 1/12 with t-plate. put spacer beside the t-plate so the battery will not touch the t-plate. Then use tape to hold the battery in place. Depend on what car you may need to rise the center shock slightly too. The CG is higher so it may not handle as well as 1-cell car. But for 橫洲 as the grip is not high the different is not that big. And you get very long runtime.
