I was there in Feb. - not thinking about bringing a charger. I bought one of the fuel rods, and replaced it once while I was there. I plan on bringing it back with me in Oct.Honestly, I've been tempted by the Fuel Rods for the same reason, but I can't justify the cost to myself since I already own two external chargers.
I have recharged them for yearsTo be perfectly honest, I've never tried to recharge a Fuel Rod. I've just traded them in at the kiosks. However, they do state on their website that they can be recharged.