HOW TO REPLACE PLANTRONICS VOYAGER 520 / 521 EAR HOOK - YouTube
International AC Home Wall Charger suitable for the Plantronics Voyager 520 - 10W Charge supports wall outlets and voltages worldwide - Uses Gomadic B - Walmart.com
Replacement of battery on CS520 Plantronics - YouTube
Portable Emergency AA Battery Charger Extender suitable for the Plantronics Voyager 520 - with Gomadic Brand TipExchange Technology - Walmart.com