Hi, just purchased a new SX510HS recently, and love it. Went to the local camera store to purchase an extra battery. Camera came with a NB-6LH, and they had a NB-6L. Just curious, can you tell me what the difference is, and are they compatible? I purchased the NB-6L in generic version and seems to work ok, just seems to require charging a little sooner than the original battery. Any advice would be appreciated. Thanks.

