Whilst modern batteries are designed to be as safe as possible, they can still be harmful if misused. If a battery looks warped, nicked or scratched, or the wrapping is peeling, take precautions and dispose of it. The same goes if it starts getting too hot. Many vapers decide to carry some spare batteries with them. These should be kept in a battery case or wrapped in something non-conductive so they don't make contact with any keys or loose change that may complete a circuit. It is essential to use the right type of battery and charger, and don't leave batteries charging overnight. It is advisable to turn off the charger as soon as they're fully charged, to prevent overheating.
At JM Wholesale, all our batteries are sourced from trusted approved manufacturers, and undergo the most rigorous internationally recognised safety testing.