Powering speedlight with li-ion instead 4xAA?

[revance]

have been using 4x 3.2v 14500 on my sb800, works perfectly fine

Sorry for resurrecting such an old thread, but nigelyuen... is your SB800 still working?

Thanks for providing an update.

 

[Lynx_Arc]

If one could use an external battery source I would recommend going with 18650's in parallel and purchasing a boost circuit for a few dollars to step up the ~4v to 6V.