Complex sentence: Phillips first sold bicycles and motorbikes, but later started selling and recharging batteries, opening a shop in the front room of his family's house in 1925, called Phillips Battery Charging Depot.
Split into simpler sentences: Phillips first sold bicycles and motorbikes, but later started selling and recharging batteries. He opened a shop in the front room of his family's house in 1925, called Phillips Battery Charging Depot.