8 Reasons to purchase this 5200mAh Asus G73JW batteryreplacement: 1. it is safe and pass certification 2. made of sony, samsung, bak, and moni battery cells. 3. never refurbished battery. 4. protection circuit board. 5. good package. 6. full 1 year warranty and 30 days money back. 7. paypal, moneybookers, and western uninion payment. 8. high quality at the cheap price.