
A year ago I bought a USB powered battery for Sony A6500. When installed in the chamber, the remaining power was 83%, and when I used it, the percentage dropped to 50%. This reads 100% when installed and goes to 88% at its lowest when recording 4K video for over 1 hour. I changed the battery part of the device - with the same readings, so the brick provides additional energy. I plugged the USB into a 2.4A outlet. Long enough there was no topic to comment on durability.

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