Brought this charger on a 9 day road trip, worked like a champ! During the trip I had a laptop, tablet, and an extender with two DSLR camera batteries all pugged in at once, the BESTEK never had a problem. Very impressed by it's durability and ability to power multiple devices simultaneously. Fan is a little noisy when car is idle but you it exceeds standard road noise. Long power cable allows it to extend a a good distance from your lighter port . Great product, highly recommended!