best batteries you can buy are these hands down https://www.amazon.com/gp/product/B07KK2BJMN/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1

1.6V AA 2500mWh NIZN Batteries - lasts for about 12 hours on a single charge, offers better tracking than normal batteries.

https://www.amazon.com/gp/product/B07KK2BJMN/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1 These Picell 1.6v NIZN batteries! Best thing you can buy, 12 hour+ life span, no more low battery errors, and better tracking.