The waterproof battery cap is made out of hard anodized aluminum containing a high quality engraving. It ensures a shock-proof position of the battery and protects it from all kinds of weather conditions.
| Color | Black | RAL 8000 |
| Exos Series | X | |
| Polar T96 Series | X | |
| Zenith Series | X | |
| Klassik Series | X | |
| 1-8x24 PM II ShortDot Dual CC | X | X |
| PM II Ultra Short Series | X | X |
| 3-12x50 PM II | X | |
| 5-25x56 PM II | X | X |
| 12-50x56 PM II | X | |
| PM II High Power Series | X | X |