All the AW IMR batteries I have are Li-Mn batteries... Not all IMR batteries are Li-Ion. The Chinese make a blue IMR unbranded battery that you usually see in like Lavatube and a few other VV kits and such, and yes, they are a Li-Ion protected battery. Just thought I should add that little bit of info to what you put out there. Sometimes there is way too much confusion when it comes to batteries...