K&F CONCEPT NP-W235 Battery Charger Set, Dual Slot NP-W235 Charger for Fujifilm X-T5, X-T4, GFX 100S, X-H2S, for Fujifilm GFX 50S II, VG-XT4, (2 x 2200mAh batteries, dual charging ports)

SKU: KF28.0018

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Battery life varies with different video camera quality settings 
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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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No it doesn't, it seems like none of the batteries have a date code 
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Normally, it is charged and discharged 300-500 times, and after 300 times, it begins to decay to 80% capacity, which is manifested in rapid power loss. 
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Micro and Type-C are input ports, they charge the battery. USB-A is the output port, which discharges the battery. 
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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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I guess that means they are safe to use the camera. 
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You can charge one or two batteries 
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Compatible, it uses the included USB Type A to USB Type C cable, so you can plug it into a travel adapter with a USB port. .