Rechargeable battery life is typically defined as the number of full charge-discharge cycles before significant loss in capacity is noticed. Inactive storage may also reduce capacity. Therefore, rechargeable batteries for small portable electronic devices in daily use should be replaced periodically to ensure performance is maintained at a high level. Li-Ion batteries are generally categorized as non-hazardous waste and are considered safe for incinerators and landfills.
The Birdy Slim Rechargeable Battery can be replaced by first detaching the belt clip and then removing the two screws that hold the battery cover in place. The battery cover itself is designed with small plastic tabs on both sides that ensure a tight fit to the Birdy Slim Pager. Insert a flat-head screwdriver or comparable tool into the slot at the top of the battery cover and apply pressure until the cover comes off. The battery is not attached to the inside of the pager and will easily fall out.