Q: How do I release a big L-Mount battery from my 7-Series recorder? It is on quite securely.
A: The 702, 702T, 722, and 744T are equipped with a battery locking pin to ensure a solid, reliable power connection. The locking pin is the silver piece to the right of the battery inside the battery compartment. To release the battery, depress the pin using a narrow object such as a pen, key, paper clip, or coin. While pushing down the pin, slide the battery to the right to free it from the recorder.
If there is a need to frequently exchange batteries without using tools, consider using Sony M-mount Li-ion batteries. These are narrower and will allow for no-tool removal.