Bought to power my bicycles Roadhawk camera, this battery seems to have enough charge to run for ages. I have not found out exactly how long the BONAI power bank will run my camera for , but it is certainly well over 2h30m. I had a little difficulty mounting the power bank to my bikes, since it is bigger than the battery it replaces. The time taken for initial charging was quite long, but top up times are around 30 mins after 2 hours use. I highly recommend this product.
I've recently been abroad and that was just what I wanted.
Every day I was out the whole day and charger was great!
The only thing is it weight!Little bit to heavy for ladies bag, but apart from that, I' m sattisfied!