I use these:

https://www.amazon.com/dp/B00WTRSTAU?psc=1&ref=ppx_yo2ov_dt_b_product_details&pldnSite=1

https://smile.amazon.com/dp/B00W1DASO2?ref=ppx_yo2ov_dt_b_product_details&th=1

by having 8 batteries, I can charge half of them while using the other half, which pretty much eliminates any battery problem.

These are the rechargeable batteries I bought for my Odyssey+ and now use in my G2.

PKCELL Rechargeable AA Batteries NiZn Double A 1.6V 2500mWh Battery