Concept 2 PM4 monitor rechargeable battery pack (model D & E rowing machines) - GymStock
Battery Door Thumbscrew—PM3, PM4, PM5 Monitor - Concept2
PM3 Monitor - ErgFit Limited
LiveRowing Concept 2 Connector for Apple Smartphones - Rowing Machine Accessories for Your PM3, PM4, PM5 Erg Machine - Plus Free LiveRowing App - (Cradle NOT Included, for Apple Devices ONLY): Buy
New Concept 2 Battery Door Battery Cover w/ Thumbscrew for concept2 PM5 monitor | eBay
PM5 Case Back with Battery Contacts - Concept2
New Concept 2 Battery Door Battery Cover ONLY for use with concept2 PM3 monitor | eBay
LiveRowing Concept 2 Connector for Apple Smartphones - Rowing Machine Accessories for Your PM3, PM4, PM5 Erg Machine - Plus Free LiveRowing App - (Cradle NOT Included, for Apple Devices ONLY): Buy
Concept 2 PM3 Monitor Not Working (How To FIX It!)