DANGEROUS
When first used the battery seemed warm even for a lithium.  I took it on a month long trip from end of April until mid May and the battery became warmer over time until it was so hot during use that I couldn't disconnect it without protection.  Then it simply stopped working at all.  THIS PRODUCT'S BATTERY IS A SERIOUS DANGER AND SHOULD BE RECALLED.  Perhaps that is why it is no longer available.
Rating: 1 stars