K&F Concept 2 Pack 2100mAh EN-EL15 EN-EL15A/B Battery and Dual Battery Charger Set for Nikon D7000 D7100 D7200 D7500 D850 D750 Z5 Z6 Z7(Arrives before August 7th）
SKU: KF28.0001
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Yes, if you want to charge faster, you can also use a wall charger 5V/2A to charge the battery.
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It has ports for two cables.
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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 doesn't, it seems like none of the batteries have a date code
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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.)