x300 battery Panasonic x300 Standard Battery * x300 Battery Capacity: 600mah high-density * grade A Japanese cells * Type: Lithium Ion, No memory effect, IC Smart Chip Technology * Length: 54 millimeters * Width 32 millimeters * Thickness: 7 millimeters * 100% Buyer Protection Guarantee. * Color: White (Internal battery) Panasonic x300a cellphones.Our factory manufacturers OEM batteries and this Panasonic x300 battery is made with the same OEM standards.