I am assuming you have tamiya style connectors, two white plugs that can only be connected up together one way. You can get lipo batteries with these connectors pre-installed, they are usually a tamiya style battery, so a stick pack with rounded edges and are classed as an upgrade from the nimh packs for tamiya owners as many tamiya chasis are designed just to take this shape and style of battery.
I would strongly advise the use of another style of connector as the tamiya when put under high load, especially in racing, tend to get very hot and melt together making them impossible to get apart.
I would advise getting either Deans style connectors like these ones,
Or corally style connectors like these:
The most commonly used are the corrally style in racing but they can be accidently connected up the wrong way. 90% of competition packs already have the female version of the corrally connecters pre installed.
The deans style can only be connected up one way and can take a bigger load so as a new starter I would suggest going for the deans.
One final thing if you are changing a connector on the battery be very careful that when you dissconnect the original connector that you don't short the battery wires together, I would recommend remove one wire at a time and then tape up the wire you have just removed before removing the other one. Then solder one of the wires on to the new connector before un taping the other one. Would hate to see your new battery go pop before you have even used it
