The usage of AAA batteries in various appliances is increasing due to their compact size. Manufacturers of rechargeable batteries specify the time taken for charging the batteries based on the charging current. For example for Vipow Ni Mh AAAA 1000 mAh 1.2V rechargeable batteries, the standard charging time is 15 hours at 100 mA. For a quick charge, a charging current of 300mA can charge the batteries in 5 hours.
For Uniross Dynamic Ni Mh AAAA 1100 mAh 1.2V rechargeable batteries, the charging time is 7 hours at 120 mA. These batteries are supplied precharged.
Certain models of battery chargers like BC 9009 from La Crosse Technologies display the charging current, voltage as well as other parameters, when the batteries are being charged and also indicate when the batteries are fully charged. In other models, an LED is used to indicate the battery charging status.