Lord, there are tons of options. The most powerful, longest lasting would be a field battery and a power panel with jacks for a glow ignitor. Of course, that's a lot of crap to deal with. It would be far easier to just get a new, good quality rechargable ignitor or just replace the battery in the one you have. Although, if I were to make a guess, I'd guess that your problem is not so much your ignitor as the charger you're using. My 2/3 AA ignitor will last for days and I think I spent all of $17 for it.