BATTERY HELP PLEASE GUYS

[markemark21]

HELL ALL IM NEW TO RACING AND BEEN LOOKING AT WHAT BATTERYS TO GET FOR MY MONEY IM GONNA BE USING A CENTRO C4.1 I JUST BROUGHT AND BEEN LOOKING AT THESE SADDLE PACKS
BASICLY I WANNA KNOW IF I WILL BE OK WITH ONE PACK OR WILL I NEED TO GET TWO PACKS
ILL BE RACING AT MARITIME RACEWAY THIS IS WHAT I THOUGHT I COULD USE AS THE PRICE WAS GOOD
http://www.hobbyking.com/hobbyking/s...APPROVED_.html

OR

http://www.rccarshop.co.uk/index.php...ck-40-7wh.html

THANKS GUYS