HQRP 3400mAh Internal Li-Ion 3.7V PDA Rechargeable Replacement Battery for 310-5964 Dell Axim X51 Po

• Capacity: 3400 mAh EXTRA high Capacity; Voltage: 3.7V;
• HQRP Internal Li-Ion Recharcheable Battery plus HQRP Universal Screen Protector;
• 100% compatible with Original Battery and Charger devices;
• Modell: 310-5964
• No Memory Effect, The battery can be recharged without loss of capacity; 200 days warranty.

very good battery. very long lasting, as stated. i dont' recharge for entire wk !!

only negative point : back cover has lace mechanism which is little bit loose, in compare to original one.

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The product appeared bulky and thick in the liteature but it was not. It came charged and worked out of the package with no loading or fitting problems. It has been retaining the charge well and powering my pocket PC.

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What the item description does not tell you is due to the thickness of the battery and the new case-back, your PDA will need a different charger than that which comes with the PDA in box. Can't say if item is good or bad; other rave.

Mine, did not work from package, and, as I said, it made the PDA too thick for standard charger pretty much everyone I know uses. If I had a different charger, perhaps it would work. That I can not review.

Just know my point is that the battery's width means you need another charger.