Chapter 1. Getting Started
4 Model PM880 Portable Hygrometer User’s Manual
1.1.3 Charging the Battery Pack
1. Plug the pack into the battery charger.
2. Connect the charger to AC power. When power is applied, the amber
LED glows and the charger automatically begins charging the pack.
Note: The pack is fully charged when the amber LED goes out
(approximately 4-5 hours).
IMPORTANT: When you receive your unit, you should completely charge the
battery pack before using it for the first time.
3. Remove the pack from the charger and reinstall it in the PM880. Refer to
Checking the Battery Status on page 133 for details on monitoring the
battery.
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