Primary (non-rechargeable) batteries
Primary batteries are used once, then discarded. They have the advantage of the convenience and cost less per battery, with the downside of costing more over the long term. Generally, primary batteries have a higher capacity and initial voltage than rechargeable batteries and a sloping discharge curve.
Secondary (Rechargeable) batteries
A rechargeable battery, storage battery, secondary cell, or accumulator is a type of electrical battery which can be charged, discharged into a load, and recharged many times, as opposed to a disposable or primary battery, which is supplied fully charged and discarded after use.