YSI 556 MPS - Manual (Page 15)

Probe Module Section 3
YSI Incorporated YSI 556 MPS Page 9
Figure 2.2 Back View of YSI 556 MPS
2.4 Batteries
2.4.1 Battery Life
Standard Alkaline Batteries
With the standard battery configuration of 4 alkaline C cells, the YSI 556
MPS will operate continuously for approximately 180 hours. Assuming a
standard usage pattern when sampling of 3 hours of “on time” in a typical
day, the alkaline cells will last approximately 60 days.
Optional Rechargeable Battery Pack
When fully charged, the optional rechargeable battery pack will provide
approximately 50 hours of battery life.
Barometer
Vent Patch
Accessory
Mounting
Holes
Battery Lid
Screws
Lid