Two years old although only been charged 4-5 times max.
I purchased this to use at Dusk til Dawn whilst running solo.
I dropped the battery and cracked the casing slightly but the battery is in full working order. To be honest, the crack is only visible if you apply pressure to the battery and it opens the crack.
I have modifed a mount so that it can be mounted on the standard quick release bracket. I had two on my bike, one for the light and one for the battery. Works a treat and keeps cabling to a minimum.
I also taped around the cable entering the unit to avois any muck getting in. Strangley Exposure have since put a grommit on the new battery packs!
£44 posted - Payment by paypal gift