Sam 1 If i compare this battery to my original one, it is smaller in size and last shorter. My rc car runs for 10 min on fast mode and then slows down for 5 min using the original 7.4v 1800mah that comes with the car. This one i bought runs for only 5 min on the fast mode and 5 min on normal mode then dies. It is labeled incorrectly. Be careful.