This post was actually taken from Motorola's website. A link will also be provided below so that you could visit their site for more information.
Only Motorola Original Charging accessories should be used with your Motorola phone: See page 44 of Droid by Motorola user guide.
Important: Use Motorola Original products for quality assurance and safeguards. To aid consumers in identifying authentic Motorola batteries from
non-original or counterfeit batteries (that may not have adequate safety protection), Motorola provides holograms on its batteries. Consumers should confirm that any battery they purchase has a “Motorola Original” hologram.
Motorola recommends you always use Motorola-branded batteries and
chargers. Motorola mobile devices are designed to work with Motorola batteries.
If you see a message on your display such as Invalid Battery or
Unable to Charge, take the following steps:
• Remove the battery and inspect it to confirm that it has a “Motorola Original”
• If there is no hologram, the battery is not a Motorola battery;
• If there is a hologram, replace the battery and retry charging it;
• If the message remains, contact a Motorola authorized service center.
Important: Motorola’s warranty does not cover damage to the phone caused by
non-Motorola batteries and/or chargers.
Warning: Use of a non-Motorola battery or charger may present a risk of fire,
explosion, leakage, or other hazard.