I know that you don't have to balance your Lipos EVERY charge, but that it is important to do every once in a while. I have an Onyx 230, but I don't have a balancer for it. I've been looking for a cheap balancer and I keep coming across these "balancing chargers" ex

Apparently I can't post links, but it's ebay item # 110506051608

Could I buy one of those and just charge my pack with it once in a while? I have a 2S 5000mah Turnigy.. The Balancing charger comes to $10 shipped and all the in line balancers I've seen are at least 30+ shipping..