The Carmel Fire Department is issuing a warning about Lithium-ion batteries, which supply power to many kinds of devices including smart phones, laptops, scooters, e-bikes, smoke alarms, toys, Bluetooth headphones, and even cars.  Fire officials say with the increased use of this technology, there's been an increased number of fires related to these batteries.  The Department recommends following the manufacturer’s instructions for charging and storage, not to charge a device under a pillow, on the bed, or on a couch--and to use the manufacturer’s cord and power adapter made specifically for the device.