RC car battery help please!?

The car has limited space in it's battery compartment so anything bigger than the original battery probably won't fit.

The battery is a BST power (shenzen) limited 7.2V.
It's size is 1.4 cm tall (laid out flat), 9.8 cm long, and 4.5 cm wide.

it's connector looks like this : http://image.made-in-china.com/2f0j00mewQNCjRMtoc/7-2v-4200mAh-RC-Car-Battery-Pack-SH-SC4200-6-.jpg but the rest of the battery is not like that.

It is also yellow :)

Sorry for being so specific but I really, really need to get the right battery, the one that came with the car doesn't seem to be very standard :/