What type of batteries does the PM4 use?
The PM4, when purchased with a Model D or Model E Indoor Rower, comes equipped with a rechargeable battery pack. The recharge rate depends on the usage pattern of the rower: the more and harder you row, the more quickly the PM4 charges. The rechargeable battery pack works only when a PM4 is installed on a Model E Indoor Rower or a Model D Indoor Rower manufactured from December 1, 2006–present. All PM4s are also equipped to use two D-Cell (IEC LR20) batteries. Retrofit PM4s for Model D/C/B/A will come shipped with D Cell batteries.