from flash at the left side I removed the battery holder to show, that you can order an extra holder and change batteries very fast.
Besides that they offer very strong external batteries, but not cheap!
go to the Nissin pages for more informations: www.nissindigital.com/di700-air.html
BTW: I have no connections to Nissin and bought these flashes for my personal use. I just think that there are more out there like me, who are looking for a good flash solution :-)
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