This article describes the specific steps of charging WB001, and the states of charging.
Charging steps: Please plug the mic head of the charging cable into the speaker DC 5V jack and connect another USB head with any 5V charger, power bank, or even your computer to charge the speaker. The package does not come with a charger but a charging cable. Most of the chargers in our daily life are 5V.speaker. The package does not come with a charger but a charging cable. Most of the chargers in our daily life are 5V. charging cable.
Charging states:
In charging: red indicator flashes.
Fully charged: red indicator becomes constantly light.