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The PRSA-BP9 Battery for Sony Reader (3.7VDC) is a spare battery pack for your Sony Reader Daily Edition. Whether you're in need of a replacement battery or you simply want an extra around this battery features a maximum of 19 hours of battery life on a full charge.
This long-lasting rechargeable battery pack will keep you powered-up longer
Keep your Reader Daily Edition ready to go with a fully-charged spare battery