-8-
v6.3
Waspmote Kit
Usage and storage recommendations for the batteries:
The rechargeable, ion-lithium batteries, like the ones provided by Libelium (capacity of 6600 mAh), have certain characteristics
which must be taken into account:
•
Charge the batteries for 24 hours before a deployment. The aim is to have the charge of the batteries at 100% of their
capacity before a long period in which they must supply current, but it is not necessary to improve the performance.
•
It is not advised to let the charge of the batteries go below 20% of capacity, since they suffer stress. Thus, it is not advised
to wait for the battery to be at 0% to charge it.
•
Any battery self-discharges: connected to Waspmote or not, the battery loses charges by itself.
•
Maximum capacity loss: as the charge and discharge cycles happen, the maximum charge capacity is reduced.
•
Batteries work better in cool environments: their performance is better at 10 ºC than at 30 ºC.
•
At temperatures below 0 ºC, batteries can supply current (discharge), but the charge process cannot be done. In parti-
cular:
-
discharge range = [-10, 60] ºC
-
charge range = [0, 45] ºC
It is not reccommended to have the non-rechargeable batteries (13000, 26000, 52000 mA·h) connected to Waspmote when the
USB cable is conneted too. The reason is, Waspmote will try to inject current in them if the USB is connected. This is dangerous
for the good working of a non-rechargeable battery. It could be damaged or even damage Waspmote. That is to say, when you
need to upload code to Waspmote via USB, disconnect the battery if it is non-rechargeable. That applies to Waspmote OEM, but
not to the Plug & Sense! line, since its hardware is modified to avoid this.
Plug & Sense! line:
Libelium may provide the nodes with enclosures which are suitable to operate outdoors. The user, as final installer, must take
great care when handling the product. We advise to read the Plug & Sense! Technical Guide to enlarge the life of your devices.
Remember that inappropriate use or handling of Waspmote will immediately invalidate the warranty.
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