The lithium battery is very handy. It does not heat up much in operation and lasts a long time on one charge, you can take more than 1000 photos from one charge. One battery is enough for me for the whole day of the event, I recharged it for confidence at lunchtime and definitely enough until the evening. Another lithium battery gives a high recharge rate. It takes 1.5 seconds to fully charge (well, it feels like it) The TTL mode works, which is an achievement on third-party flashes. Not always correct, but such cases are rare and do not interfere with work. Everything is done firmly, neatly, nothing dangles.