Can I Use the Battery Charger to Power the MX2, MX3, or AT2?

The 2700 mAh Portable Power Battery?:

NO! The charger included with the 2700 mAh may look like a normal AC-DC adapter, but it is actually a trickle charger specifically for the battery pack.  It cannot power the MX2, MX3 or NMX with motors attached. Extended attempts to use it to do so may result in damage to the controller or the battery charger.

The 23000 mAh Pro Extreme Battery?:

YES! The charger included with the 23000 mAh Pro Extreme Battery is a 20V 2A DC power supply, so it can be attached to our systems and properly power them with motors attached.