Stop guessing which batteries are dead.

Track every cell in your home. See what needs replacing, what needs recharging, and when to drop old batteries off for recycling.

Total batteries

Rechargeable

Need attention

Your battery drawer

No batteries yet. Add one below or tap a preset to get started.

Type	Device	Installed	Rechargeable	Recharge cycles	Estimated life	Status	Actions

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Pick a preset to fill the form quickly, or type in your own details.

Storage mistakes that ruin batteries

Storing loose batteries together. They can touch and short-circuit.
Mixing old and new cells in the same device.
Leaving batteries in devices you rarely use for months.
Storing rechargeables fully empty for a long time.
Keeping batteries in hot or humid places.

Use a battery organizer case or keep cells in their original packaging. It prevents shorts and makes your drawer easier to scan.

How to read dates and codes

Most alkaline batteries have a year and month printed on the wrapper, like 2028-09. Coin cells often show a 4-digit code; the first two are the year, the next two are the month.

Rechargeable cells do not have printed expiry dates. Track their recharge cycles here instead. A typical NiMH cell lasts about 300 to 500 full cycles.

If a device dies right after you swap in a battery, the cell is probably not full. Test it in another device before you toss it.

Disposal and safety

Most single-use batteries can go to local recycling drop points, but rules vary by area. Rechargeable cells should never go in household trash because they contain metals that can harm the environment.

Check your city or county waste website for battery drop-off locations.
Many hardware stores and supermarkets collect used batteries in small bins near the entrance.
Tape the terminals of lithium and coin cell batteries before storage or transport.
Keep button batteries away from small children. They can cause serious harm if swallowed.

This page does not give legal disposal advice. Always follow local rules and the instructions printed on the battery wrapper.

Common questions

How often should I check my stock?

Try a quick check at the start of spring and fall, or when you change smoke detector batteries.

Are rechargeable batteries always better?

They work well for toys, cameras, and controllers. For clocks or remotes that sip power slowly, alkaline cells can last longer.

Can I store loose batteries together?

It is risky. Use a battery case or keep them in their original packaging to avoid shorts.

Why do some batteries leak?

Old or fully discharged alkaline cells are more likely to leak. Remove them from devices if you plan to store them for a while.

What should I do with a leaking battery?

Wear gloves, wipe the device contacts with a dry cloth, and place the battery in a non-flammable container until you can recycle it.

About this page

This is a small home utility for tracking household batteries. It runs entirely in your browser. Your list stays on your device unless you export or print it.

Last updated: 2026. Version 1.0. The recharge and age estimates are general guidance, not exact predictions. Always follow your device manufacturer and local disposal rules.