Power pack for Sb-26/SB-28

[Mike Rohde]

I'm going to be doing a friends wedding next month and I need an
external power source for my SB-26. I would expect two improvements from
this power source a. shorter recharge times b. more flashes that from
internal batteries.

Can anyone suggest a power source. I'd like it to work with an SB-28
also.

Thanks,
Mike