7 years ago
#115 Quote
Our sensors use a 3.6 Volt Lithium Thionyl Chloride battery model number ER14505 which is available directly from us here.  Use caution in buying these from local suppliers as they do not sell very many and their inventory may be old.  While this battery has a very long (15-20 year) shelf life the issue is that it "hibernates" if it is not in use.  Once it hibernates you have to wake it up before it can deliver sufficient current to properly power our sensors.  To wake the battery up connect it to an ammeter and draw at least 100 mA, or in a pinch you can insert it into our sensor reverse polarity (aka backwards) for 10 seconds which forces the high current draw needed to wake the battery.

In the UK ER14505 batteries can be ordered here.