Originally posted by Soviet
It's larger by about 1mm in total diameter. Not a large enough difference to screw up fit in any modern RC-Car
Each cell is larger by 1mm. For a total of 6mm larger for a complete pack...that's a lot!!
Actually, yes the 3700's are large enough to to mess with the fit in a car. They will not fit correctly or as well and the 3300's do.
Cars that use strapping tape or have room for 7 cells (e.g. TC3)will not be greatly effected. But cars that use a battery brace with battery posts like Schumacher, X-ray, Corally...etc the batteries will not fit without modification. The modification needed involved widening the battery slots in the chassis for a good fit and shaving material off of the battery brace posts.
Just an FYI...Corally just redisigned the RDX chassis so that it is designed to fit 3700's...meaning that the 3700 cells would not fit into their chassis without modification.