GP Batteries Standard Lithium V9 Battery (Pack of 1) the spiral cell construction of GPs CRV9v gives it higher power and lower internal resistance than other competitors. It has a built in safety device to protect from external short circuit (most competitors don’t have this feature). Excellent performance at low temperatures and a better discharge.

A number of countries have now implemented legislation governing how long smoke detectors have to remain maintenance free, in response to this GP Batteries have introduced the primary lithium CRV9 battery.