K&F CONCEPT NP-FW50 battery and dual slot battery charger kit for Sony Alpha 7, A7, Alpha 7R, A7R, A7R II, A7 II, A7S, A7S II, A7M2, A7SM2, A7RM2, A5000 A6000 A6300 A6500, a3000 , NEX-3, NEX-3N, NEX-5, NEX-5C, NEX-5N, NEX-5R, NEX-5T, NEX-6, NEX-7
SKU: KF28.0004
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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.)
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New decoding, support original charger charging
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It's hard to say exactly when. I've tried and can take over 1000 shots on a fully charged battery, hope this helps.
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Personally, I charge the battery ahead of time or when I arrive at my destination hotel. I then store the battery in my camera bag, separate from the charger. So far, I'm happy with these batteries.
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I've tried both, and it's pretty fast either way.
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Third-party batteries can be charged with KF chargers, but based on reliability considerations, KF batteries should use KF chargers as much as possible, and our products are guaranteed safe.