The Sony BP-U35 Lithium-Ion Battery Pack (Sony BP-U Series, 35 Wh) is a Lithium-Ion pack for any camera that takes BP-U Series batteries, offering 35 Wh capacity. It sits under the 100 Wh mark, so airline rules allow it in carry-on without prior approval.
Key Features
35 Wh Capacity
Holds 35 Wh, which is what sets both how long it runs and how it may be carried on a flight.
BP-U Series
Fits any device or plate built for a BP-U Series battery, so it interchanges with every other pack on that mount.
14.4 V Output
Supplies 14.4 V through the mount, which is the level the cameras and accessories on this system expect.
Lithium-Ion
Built on Lithium-Ion cells, which is what sets its weight, its charge behaviour and the rules for shipping it.
Carry-On Approved
Under 100 Wh, the threshold below which IATA rules let a spare battery travel in carry-on without asking the airline first.