EN-EL15 EN-EL15A EN-EL15B 2 Pack Battery and Charger for Nikon Z6, Z7, D780, D850, D7500, 1, V1, D810, D810A, D800, D800E, D750, D610, D600, D500 Cameras
SKU: KF28.0001
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Normally charging and discharging300-500 times, after 300 times, it starts to decay to 80% capacity, which is manifested in rapid power failure.
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You can charge 1 battery individually or 2 batteries at once if desired.
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one year
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I guess that means they are safe to use the camera.
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No, it has to be inside the camera to display the battery level
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No it doesn't, it seems like none of the batteries have a date code
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The LED light will turn green when there is no battery in the charger or when the battery is fully charged. The LED light will be red while the battery is charging.
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Yes, micro USB and USB-C are supported. It's great because you can use any micro USB cable and USB-C and take it with you.
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Regardless of supply voltage, all USB ports output 5VDC, between 0.5 and 2.5 amps. Any USB connector will work fine.
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Yes, it charges them quickly and then the light for that slot turns green. To me, that's an indication that it's going to lose power because the battery isn't hot the next day. (No, they don't need to be charged overnight, they're fast.)