Two companies are recalling a combined 551,000 lithium batteries sold across the United States after receiving multiple reports of customer injuries. China-based Shenzhen Charmast Technology recalled around 488,000 units of its model W1056 power banks sold in the United States as the lithium-ion battery in these items “can overheat and ignite, posing fire and burn hazards to consumers,” said a Dec. 19 notice from the U.S. Consumer Product Safety Commission (CPSC). On the same day, Illinois-based Chervon North America announced the withdrawal of around 63,000 units of its lithium-ion batteries used in lawnmowers and outdoor tools citing similar issues. Charmast received 44 reports of the power banks “expanding, igniting, melting, overheating or smoking.” This included four incidents in which customers suffered blisters or burns….