SAVEoN Nikon MB-D10 Replacement Battery Grip by XIT for D300/D300S + 2x High Capacity Long Life Battery + AC/DC Rapid Charger + Deluxe Carrying Case + Microfiber Cleaning Cloth Effectively double your shooting time Battery cartridge plate holds extra EN-EL3E lithium Ion batteries Vertical shutter release AA cartridge plate holds 8 AA batteries for added convenience Significantly improves stability, One year limited warranty