The Pokémon Company and Tokyo-based electronics maker Nearby Direct recently began selling Pikachu-themed mobile battery packs. However, a statement has since been issued warning consumers that due to inadequacies in the manufacturing process, some users have observed the batteries becoming abnormally hot and generating smoke. The problem affects not only Pikachu-patterned batteries, but those styled after the series’ Poké Balls as well. The statement asks owners to refrain from using the devices and offers a voluntary recall for the product in which the purchase price will be refunded. Batteries can be turned in to Pokémon Center and Pokémon Store retail locations, or by mail in Japan.