Short info: HP - Battery - 13.5 Ah Group UPS & Power Supplies Manufacturer HP Inc. No. 512735-001 Model HP EAN/UPC 5704327667483 Product Description: HP - Battery - 13.5 Ah Device Type Battery Output Voltage 4 V Power Capacity 13.5 Ah Detailed General Information Device Type Battery Power Supply Device Output Voltage 4 V Power Capacity 13.5 Ah.