The batteries usually last 5 to 15 years before they need to be replaced.

When batteries need to be removed simply tilt the control box and allow them to slide out into your hand.

A battery may need recharging in the winter to keep operating.

When all the negative ones go to the other side the battery is flat and needs to be recharged.

This results in a fairly long talk time of 14 hours before the battery needs to be charged.

"The gardener's battery needs charging," someone somewhere off to the east was saying to his wife.

When I finally got the package the next day, the phone was activated, though the battery needed to be charged for four hours.

However, batteries need to be replaced every few years.

On the other hand, the pen itself is ready to go immediately into the field, and the batteries never need replacement.

At the moment I can't really try it out as the battery doesn't need charging.