I got a Daymak 84v from our local garbage dump. It came with a key (now lost), the bike itself (duh), and a 90v charger. I have no idea what actual model it truly is. The only decals on it say daymak and 84v on it. Doing a Google search I've come up with it possibly being either a Chameleon or a Vienna. Searching for a replacement battery for a Chameleon results in 60v 20ah sets. The bike had no batteries in it or battery boxes either. So I have no idea as to what it actually takes. I have no way of knowing if the bike was thrown away with the charger or if someone at the dump just paired it with a 90v charger after seeing the 84v on the side. The 60v replacement batteries for a Chameleon come up in many of the results for that model. Though most are from Amazon which isn't known for sellers being accurate in what they sell. I did find one result from a non eBay or Amazon website that says the Chameleon takes a 60v pack. However I have now also found listings for 84v being actually 84v one 60v pack and a 24v pack that are for both the Chameleon and Vienna. Going off images mine has the same handlebar grips as a Chameleon. The plastics are somewhat similar but as I have no idea if the year I cannot rely on the plastics matching exactly. I have been reluctant to buy new batteries only to find out it is broken. Or that I bought 84v amount and it should have been 60v or vice versa. I have no escooter store on the island that I live on that i can get to give me a test pack. They probably would but as they charge an extra few hundred for the batteries than online I would like to somehow check to see if the controller and motor are good before buying batteries. Does anyone know how to do this and also to find out what bike it is I actually have? The charger looks to be an aftermarket charger not branded at all.