I've used disposables alkaline batteries for years and would buy them in the one hundred pack because I didn't have charging capabilities. This past summer I bought this summer I found an eight place charger that plugs into my solar panel, I keep a spare set always charged. I'm really liking these.
I had a rechargeable battery pack once, it always seemed to be spent when I needed it and no place to recharge or took too long to charge and bought replacement multi-battery packs for it and just kept a couple ready to go in the bag.
If you have a place to charge and remember to do it a built in rechargeable pack is nice otherwise I'd go with individual battery packs and and rechargeable batteries or in a pinch disposable alkalines will work.
You can find battery holders from on to 10 batteries at Mouser Electric or Amazon..
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After the first shot the rest are just noise.
Make mine a Minaska.
Heaven has rules and walls, He-l has open borders