TBS Graphene - with lots of it inside, seriously! It's the pack to get you through your training runs economically!
US$ 29.95
The TBS Graphene packs are here! You get power when you need it, without regret. It takes a lot of abuse and doesn't set you back much from the start. The high discharge rate will provide a stable voltage despite high Amp draws, without sacrificing the lifespan of the battery. Give them a try!