- as others will tell you:
no speed improvement, but longer run time... it all depends on the motor you use and how many times you charge before a run... but i'm getting 15 minutes per 2 charges on green motor
- the batteries are lighter (haven't weighed 'em, but they're same diameter, but shorter)
- the batteries are Nimh, same type as originals...
- you may want to search for comments from others who have purchased the Nimh from tinyrc.com; i believe others will echo what i have experienced - noticeably longer runtime on a one-for-one swapout of the original zz battery...
here's the difference (with the original on the left and the new one on the right, sitting behind my PT w/an LED mod and mobo pin switch):
- all in all, a cheap, inexpensive mod in keeping with the zz philosophy: lots of fun, lot of mods, lots of options for less bucks out of pocket...