6730B 9cells 7800mAH Laptop Battery For HP 6930P 8440P 8440W 6530B 6535B 6735B | eBay
Joy Systems NE4-0287 Laptop Battery for HP EliteBook 6930p/8440p/8440w and Compaq 6530b/6535b/6730b/6735b and ProBook 6440b/6450b/6540b/6550b - HSTNN-UB69 - Newegg.com
High Quality HP EliteBook 6930P Replacement Battery | Laptop Battery Direct
Battery for HP EliteBook 6930p 8440p 8440w ProBook 6440b Fits P/N TD06 TD06XL | eBay