This rechargeable gel cell battery by Puritan Bennett can be used as a DC power source for many CPAP machines currently on the market. The 12-volt battery is for use with CPAP machines that are configured for direct 12-volt connection WITHOUT the need for an inverter. Perfect for use during power failures, while camping, or while traveling, this battery gives you an alternate power source to ensure your CPAP machine is always there for you.Please note: This battery does not work with every CPAP machine. This battery pack is designed to function with the PB 425 BiPAP only. It may function with the 420G, 420S, or 420E but the connection to the CPAP will be loose and unpredictable. Also, the time this battery will last varies from machine to machine and pressure setting to pressure setting. The average time seems to fall somewhere between 7 and 8 hours. It must be recharged using a AC power source.
