As I use and write about this particular cradle, I realize that it really isn’t very practical. The USB charger is unlikely able to replace a dedicated AC charger. The spare battery well is nice, but of course you have to factor in the cost and convenience of that spare. Depending upon your device's carrying case, battery changes can be a pain. The LEDs are annoying and I think that if you examine your needs, you may find a better solution. However, the Mobi cradle/battery charger does hit a particular price point feature set that none of the other solutions do. After careful consideration, it may be for you. It’s certainly not for me.

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Criteria  Rating Design 3 Features 4 Functionality 3 Cost/Benefit 3 Overall (not an average)	Pros Charges and syncs through USB Spare battery charger
	Cons Must remove Treo from case LEDs too bright Computer must have power for USB charge