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HP EliteBook 820 G3 Battery Replacement - iFixit Repair Guide
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11.4V 44Wh SN03XL ST03XL Laptop Battery For HP EliteBook 820 G3 G4 725 G3 G4 Series at Rs 2199 in Mumbai
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Genuine HP EliteBook 820 G3 Laptop Battery 44.5 Wh 11.4 V