[MetalMan]

Usually balancing is done through some for of "taps" that are just wires that connect to each individual cell. A pack can be balanced through taps. The voltage of each cell (or cells in parallel) can be monitored through taps. Taps come in different forms - some packs use a single connector (Polyquest, Thunder Power, and the Scorpion packs). Others use an individual JST connector for each cell (Maxamps [if chosen], Tanic). I use the JST connectors for ease of use. I am always balancing my cells, so I can attest to their advantages. The only problem with the JST connectors is that they shouldn't be used for more than 5 amps (although can handle 10, but the resistance will cause quite a voltage drop).