much maligned (by myself, my sister and nephew #3) F4s is now -with the addition of an MB-23 battery pack - an F4e. So, if you would like to convert your F4 into an F4s, or if you simply want a spare pack, drop me a pm. I am in Jasper National Park for Christmas (snow-shoeing with some fellow loonies from Mexico!), so I will not be able to post pics until I return home next Friday (December 27th). I will ship thereafter. The pack is not pretty, but it works perfectly well. The MB-21 is free; recipient is asked only to donate the cost of postage to APUG. My preference, given the usual b******t customs and duty regulations, is to ship either to Canada or the US.