Vaisala RS92-SGP - Manual (Page 39)

Chapter 3 ________________________________________________________________ Operation
VAISALA_______________________________________________________________________ 37
3. Place the battery in a water container with the connectors facing
upwards and immerse in water for four minutes. Use fresh tap
water, with a temperature of 15...25 °C.
0705-040 Figure 29 Battery Immersed in Water
4. Take the battery out of the water after four minutes of immersion.
Do not squeeze water out of the battery.
5. Put the battery back into the case. Note that one end of the battery
is waxed to prevent leakage, see the circle in
Figure 30 on page 37 .
Place the battery so that the waxed end points to the small
projections on the case.
0705-041 Figure 30 Battery in the Case, Waxed End Circled