YSI 556 MPS - Manual (Page 17)

Probe Module Section 3
YSI Incorporated YSI 556 MPS Page 11
2.4.3 Inserting Optional Rechargeable Battery Pack
Figure 2.2 Inserting Battery Pack
CAUTION: Read all cautions and warning that come with the battery
pack before using the battery pack.
1. Loosen the four screws in the battery lid on the back of the
instrument using any screwdriver.
2. Remove the C battery lid and store for future use. Remove C
batteries, if installed.
3. Install the rechargeable battery pack and lid and tighten the 4
screws securely and evenly.
NOTE: Do not over tighten the screws.