Yes—simple physical systems work best.

Common approaches:

• keep charged and used batteries in different pockets or compartments, e.g. charged on one side of the bag, depleted on the other
• use tape as a clear status marker: put a small strip across camera-battery terminals, or across the ends of AA/AAA cells; remove it before use so the state is obvious
• store batteries in labeled plastic cases marked “charged” and “used”
• use color-coded rechargeable sets so matching cells stay together and are easy to identify

A good workflow is to swap used cells immediately into the “used” location and recharge them as soon as you get home. For AA/AAA, low-self-discharge rechargeables are especially convenient because they hold charge well between shoots.

The key is consistency: pick one method and use it every time so you never have to guess.