Does lead and lithium batteries. Great little charger, it is always plugged in and working.
When i bought the tender i was having problems with my battery and the tender the way its designed was able to let me get to the problem ( had to buy new battery ) not only did it help me find te problem it works perfect and stays conected to my bike 24/7! great product which showed up real fast at a great price! thanks a millon! T.bates