Do unused batteries go bad?

It makes sense, then, to wonder if batteries can go bad when you are not using them. Yes, unused batteries go bad, meaning they lose their charge over time. The expiration date on a non-rechargeable battery is typically when only 80 percent of the original charge is left. It’s good to know when you can expect your batteries to expire.

What happens if a lithium battery is left unused?

If left unused for months, a fully charged lithium battery can become completely depleted. Capacity Loss: Over time, unused lithium batteries can lose their ability to hold a charge. This means that when you finally decide to use the battery, it might not last as long as it would have if it had been used regularly.

What happens if a battery expires?

If the battery has expired, or if it’s more than three years old, don’t try to use it – just get a new one. If the battery is less than three years old and isn’t expired, you’ll need to charge it before using it.

How long can a battery last?

Research reports show that when you store your battery with a 40% charge at 25°C, you can recover 98% of the battery capacity after one year. On the other hand, when you store your battery at 60°C with a 40% charge, you can recover 75% of the capacity only after one year.

What happens if a lithium battery is left uncharged?

Leaving a lithium battery completely uncharged for a long time can be detrimental. If a lithium battery is left in a discharged state for too long, it can fall into a deep discharge state. In this state, the battery’s voltage drops too low, which can lead to irreversible damage and a significant reduction in capacity.

How long do rechargeable batteries last?

If a battery has been sitting idle for a long time, it may no longer be able to hold a charge at all. In this case, it’s best to replace the battery rather than try to revive it. With proper care, your rechargeable batteries should last for several years.