I have (2) batteries/(2) chargers for my C80. More batteries = more range! I got my C80 elsewhere tho. Anyway....this charger should be INCLUDED when you buy an additional battery! After all, the darn battery isn't cheap @ $750/pop. Then you pay $200 for the charger($950 tot)! When you buy a new iPhone...Apple no longer includes a charger (you have to pay $20 for one...when it should be included).....
My only real complaint is: While charging the battery (this happens even with the stock charger as well) the charger gets "EXTREMELY HOT" to the touch! No one ever mentions that in the reviews. Overall, it gets the job done. I let my batteries get down to 25% before I swap them out & recharge. Charging them on their own when you have multiple batteries is a MUST for me! Work smarter, not harder! :)
Additional thoughts: I love having multiple batteries! I NEVER get "range anxiety!" My crazy self had a thought while riding the other day like "I could use (3) LOLOLOL!!!!" (2) is enough for now tho. I love that they are portable/removable batteries! Charge them in your garage, or in your home. I love the nice carry handle & the led battery level indicator. 25lbs in weight isn't bad either.