The press release from Garmin is the only knowledge I have of their battery problem.
Looking back 20+ years Fire Fighting Hotshot Crews were issued Lithium batteries for their headlamps. This was a test program to find if the meet the need and suitable for the use. Wildland Fire Fighters spend a lot of night hours fighting fires. At the time I am not aware of Lithium batteries being issued to other wildland FF. I was using the same alkaline batteries issued to rank and file FF.
A flyer came out directing the turn in of the Lithium batteries, and a warning not to carry them on board aircraft. (Remember this was old 1980’s technology.) There was a warning that the batteries might break out into flame when airborne.
Date: September 8, 2006
Subject: Important information regarding Garmin products with rechargeable lithium-ion
Some Garmin products are equipped with a rechargeable lithium-ion battery. The
lithium-ion battery technology enables your Garmin product to hold a charge longer than
comparable batteries and provides more power for running the numerous features
included in your Garmin product. However, in rare cases lithium-ion batteries may overheat, which can lead to a possible fire risk.
To help eliminate the possibility of such an event occurring with your Garmin productand help maximize battery life, please be aware that extremely high temperatures (greater
than 140° F, 60° C) can increase the possibility of poor battery performance or a battery
overheating situation. Therefore, when using your Garmin product as an automotive
navigator attached to your vehicle’s windshield or dashboard, you should remove the
Garmin product from direct sunlight when departing your vehicle on a hot day. Please
store the unit in your vehicle’s glove box, trunk, or other vehicle compartment, or take
the unit with you upon leaving the vehicle. Taking these precautions will reduce the
possibility of the battery reaching these elevated temperatures.
Garmin appreciates your loyal support as we continue to develop, manufacture, and sell
the world’s leading line of GPS navigation products. Safety and customer satisfaction
will remain our highest priorities at Garmin.
If you have any questions, please contact Garmin Product Support at 1-800-800-1020
or 1-888-442-7646 or visit the Support web page at http://www.garmin.com/contactUs/techSupport.jsp http://www8.garmin.com/safety/pdf/battery.pdf#search=%22battery%22
The Lithium-lon Battery Packs I have for my Garmin Rino 530HCx have provided great service in hot and cold temperatures. They have never been exposed to extreme heat.
Dell computers replaced one of the Lithium-lon batteries that I have for my laptop computer because of fire risk.