In case of skin contact there is a chance of chemical burns. Use clear tepid water for at least 15 minutes on exposed skin. Consult a physician in case of irritation, injury or pain. In case of contact with the eye, do not rub the eyes, but flush with clear tepid water for at least 30 minutes and consult a medical professional immediately.

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

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

Shelf life varies from product to product.

There are different types of Panasonic alkaline batteries, each with their own specialty.

The revised RoHS (Reduction of Hazardous Substances) Directive 2011/65/EU...

Always insert batteries with the poles in the correct direction. Not doing so will lead to a short circuit.

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.

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

The main difference between a zinc battery and an alkaline battery is the type of electrolyte used in both batteries. Because of the composition, an alkaline battery delivers more energy than a zinc battery. Both batteries should thus be used in different appliances.