Are Rayovac Fusion AAA batteries good for game controllers?

Yes. Fusion is Rayovac's premium alkaline line, made for high-drain devices like controllers, toys and wireless mice. Expect solid runtime, though rechargeables are cheaper long term for heavy play.

How is Fusion different from Rayovac's standard AAA?

Fusion is the premium tier, marketed for longer life and better leak resistance in high-drain devices. Standard Rayovac AAA is the budget option for clocks, remotes and other low-drain items.

Do these batteries leak?

Fusion is designed to resist leaking, and owner reports of leaks are uncommon. As with any alkaline, remove dead cells from devices you store for long periods.

Can I use them in any AAA device?

Yes. They are standard AAA (LR03) alkalines at 1.5V and fit any device that takes AAA. Do not use them in chargers or devices that require rechargeable cells.

How should I store them?

Keep them in a dry place at room temperature, away from heat and metal objects. Alkaline cells hold their charge for years on the shelf, so spares are fine to stock.

Are they better than Energizer Ultimate Lithium?

For cold weather, cameras and very high-drain gear, Ultimate Lithium lasts longer and handles extremes better. For everyday toys and controllers, Fusion is a reasonable alkaline choice.