Four fire engines and around 25 firefighters tackled a house fire on Masterman Road in East Ham.
Half of the first floor of a mid-terraced house was damaged by fire. Four adults and a child left the building before the Brigade arrived. There were no reports of any injuries.
The fire is believed to have been accidental and caused by lithium-ion batteries.
A London Fire Brigade spokesperson said: “Lithium-ion batteries are susceptible to failure if incorrect chargers are used, so it’s important to always use the correct charger for the product and buy an official one from a reputable seller.
“Batteries can also pose a risk if they have been damaged, so try to ensure they are not getting knocked around while in use as this can increase the chance of damage to cells. You should also not expose them to extremes of temperature."
The Brigade was called at 2354 and the fire was under control by 0104. Fire crews from East Ham, Plaistow, Barking and Stratford fire stations attended the scene.