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For the NB-13L your question is related to hour many pictures you take and over what time span. As the instructions on the box state, they normally last for taking approximately 210 pictures. I've taken about that many over a 12 hour period and the battery still had some charge. So after a long and full day I would quickly recharge the battery. Additionally, I would take along one spare just in case I shot more in one day. Never ran out.
Sorry, there was a problem. Please try again later.On a one day use, this battery lasts as long as a OEM battery. Over time I have no idea. I've only had this battery for one month.
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