Batteries are classified according to IEC classification standards: LR03 is equal to AAA, but in another standard.

Battery leakage is caused by forcefully discharging, short-circuiting, or the safety valve releasing excess gas from inside the cell.

A hot battery could have several causes: from wrong storage to short circuiting. Some warmth is okay but keep an eye out for unusual heat.

Zinc carbon batteries are more commonly used in low-drain devices, whereas the Panasonic alkaline range spans the entire appliance spectrum: from low- to high-drain.

This is a vibration noise which occurs when electric current flows through a transformer or a winding wire inside a component part. However, the charger may still be used without any concern as there is no need to worry from a safety point of view.

Yes. All batteries have an expiration date, beyond which their performance decreases.

Don’t charge an alkaline or zinc-carbon battery, they are not designed to be charged.

Immediately head to the nearest emergency room. Avoid drinking or eating before a doctor has provided a decent diagnosis.

Never use Ni-MH rechargeable batteries for waterproof appliances, appliances specifically designed for alkaline batteries, or in appliances with battery indicators.

No. Condensation could cause damage to your batteries. Avoid putting batteries under extreme temperatures at all times.