A fire that may have been started by a lithium-ion battery in a charging device caused about $400,000 in damage to a Waiehu house Sunday night.

Firefighters arrived at the Alakai Street house at 10:27 p.m. to find a fire with flames coming from some of the windows. Crews had the fire contained by about 10:47 p.m. and extinguished at 1:24 a.m. Monday. Damage was $300,000 to the structure and $100,000 to contents.

The residents were at home and smelled smoke, said Edward Taomoto, Honolulu Fire Department fire services chief. When they opened a bedroom door, they found the bed on fire and exited the home. No injuries were reported.

Thirty minutes before the fire, a lithium-ion battery was put in a USB charging device that was plugged into an electrical outlet. The charger with the battery was left on the bed, Taomoto said.

The battery was a stand-alone 3.7-volt rechargeable, much like a AA battery, Taomoto said. The charger’s USB-type cord was plugged into a standard 110-volt electrical wall outlet, he said. The battery was used to power a headlamp-type flashlight and an e-cigarette, he said.

Fire investigators said the blaze started in the bedroom, but they were unable to determine the exact cause, Taomoto said.

Three adults and three children who live in the home were displaced, Taomoto said. The Red Cross is assisting the families.

The Fire Department said when a fire is discovered in a room, those inside the building should quickly close the door before they exit. Closing the door contains the fire to the room and restricts the spread of heat, smoke and flames to the rest of the house. In this incident, the door to the bedroom was left open, which allowed the fire to spread down the hall to other areas, firefighters said.