Standard Battery Charger for the Rhythm Healthcare P2 Portable Oxygen Concentrator. 

The External Battery Charger for the Rhythm P2 Portable Oxygen Concentrator allows the user to charge a second battery while actively using the P2 concentrator, offering additional freedom and convenience.

• Does not include power supply or the battery. 
• Works with AC Adapter cord used to charge concentrator

Features:

• Approximately 2.5-4 hours to fully charge.

• Easy operation.

• Conveniently charge the battery for the P2, P2-E6, P2-E7, P2-E series.

Specifications: 

Input Voltage: DC 19v
Max Charge Current: 3A
Max Input Power: 65W
Quiescent Current: 14mA
Product Weight: 4.5 oz
Warranty: 1 year limited warranty