User’s Guide ________________________________________________ HM40
8
Charging
The optional USB charger provides a convenient way to
charge two NiMH batteries from any powered USB port
(for example, from a laptop computer).
1.
Place the rechargeable batteries in the charger and
plug it into a USB port. The blue LED on top of the
charger starts to blink.
2.
When the LED stops blinking and stays on, the
batteries are charged. The charging time is several
hours for two fully discharged NiMH batteries.
If you are not using a Vaisala-supplied charger and
rechargeable batteries, read and follow the
manufacturer’s own charging instructions.
Figure 1
USB Charger with Two NiMH Batteries
Do not attempt to charge non-rechargeable
(alkaline or lithium) batteries! Doing so leads to a
risk of battery leakage, equipment damage, and
risk of explosion and/or fire.
