SLODA A1331 battery for Apple MacBook Unibody 13" A1342 661-5391 020-6582-A MacBook Air MC234LL/A 13.3-Inch Apple MacBook Pro 13.3-Inch Apple MacBook Pro MC375LL/A 13.3-Inch Battery Type:Li-Polymer;Voltage:10.95V;Capacity:60Wh;6 Cell. SLODA High Performance Commercial Grade Laptop Batteries for Apple MacBook Pro 13-Inch A1331 are custom manufactured to be 100% compatible and optimized for your Apple MacBook Pro 13-Inch A1331 A1342 laptop. Pro Series Notebook Battery for Apple MacBook Pro 13-Inch A1331 utilizes high quality grade Pro Series Computer Battery for Apple MacBook Pro 13-Inch A1331 A1342 meets and/or exceed OEM specification and will not void your original manufacturer warranty. Fast charging. Low power consumption. Built-in protection circuit ensures both safety and stability.