This Panasonic BQ-821 battery charger is compatible with both AA and AAA batteries, making it a versatile choice for anyone in need of a reliable battery charger. 

It comes with 2 AAA 800mAh batteries, ensuring that you can always have a charged set on hand. In addition to its brand and battery compatibility, this charger has a compact design that makes it a great choice for those who need to save space. 

Its aspects include a charging time of approximately 7 hours for AAA batteries and 10 hours for AA batteries, and a charging indicator light to let you know when your batteries are ready to use. This battery charger is a must-have for anyone who wants a reliable and efficient way to keep their batteries charged and ready to go at all times.