[KevinM]

Originally Posted by GeorgeR

Not sure about Lithium mode or if it is different than AGM mode but the latest CTEK model has an AGM mode. The older MUS 4.3 TEST & CHARGE model is required if you want the test feature.

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

Yes, that one will work with the M2C or any AGM battery, but it won't work for cars with a lithium ion battery.