Vaisala DM70 - Manual (Page 16)

USER'S GUIDE____________________________________________________________________
Do not push the connector with any conducting material. See
Figure 2 on page 13.
NOTE If you have previously used alkaline batteries, remove the metal
contact before installing the battery pack.
4. Replace the battery pack, close the back plate, and tighten the
screw.
5. Charge the battery before use.
NOTE Old batteries must be disposed of according to the local laws and
regulations.
Charging the Battery Pack
NOTE Do not use DM70 during the first charging.
1. Plug the recharger connector to the base of the indicator.
2. Connect the recharger to a wall socket. A battery symbol in the
corner of the display will start rolling.
3. When the battery symbol stops rolling, the battery pack is fully
charged.
4. Disconnect the recharger.
The duration of recharging is typically 4 hours. However, the
recommended first charging time is 6 hours.
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