The cathode (positive electrode) and the anode (negative electrode) of a common battery are hooked up to an electrical circuit. How Do Batteries Work?īatteries consist of three parts: electrodes, an electrolyte, and a separator. Nickel-zinc – Rechargeable battery that is used in electric cars, portable electronics, tools, and more.You may need to contact the manufacturer to find out if they will accept the old batteries. Button cell – Used in hearing aids, watches and other small devices.Contains heavy metals and should be recycled. ![]()
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