Review (4/5): This item performs as expected. I attempted to use ...
This item performs as expected. I attempted to use Energizer Rechargeable batteries and they did not fit properly into the handle. The battery space would not accommodate the extra wrap on the battery. I grabbed a pair of regular AA's and they popped right in. The grinding wheel worked as expected. The key is to not put extra pressure on the device, just let time and the grinder do the work. Pressing down will bog the motor which is actually a safety feature. Pressing harder does not remove callus' any faster and can actually damage your skin. I suspect the folks that have issues with these types of devices is because they are impatient and are inclined to lean into it.