The PM4 for the Model D, E, Dynamic Indoor Rower, and the SkiErg came equipped with a rechargeable battery pack (no longer available). The recharge rate depends on your usage pattern: the more and harder you row or ski, the more quickly the PM4 charges. All PM4s can also use two D cell (IEC LR20) batteries, which are required when retrofitting a PM4 on a Model A, B, or C Indoor Rower.
Checking the Battery Level
- On the Main Menu, select More Options.
- Select Utilities.
- Select Battery.
- If you are using D cell batteries, the amount of power left will be displayed as a percentage.
- If you are using the rechargeable battery, the capacity will be shown as “Low,” “Very Full” and so on.
Recharging the Battery
Recharge the rechargeable battery by connecting the PM4 to a computer using a USB cable. To fully recharge the battery, we recommend leaving the PM4 connected to the computer for at least eight hours or overnight.