Reddit reviews Battery Management Systems for Large Lithium Ion Battery Packs

There are two answers, one chemical, and one electronic.

• Chemical: laptop batteries are happiest at 50 % charge. If kept at 100 % charge they lose calendar life (they die sooner). If kept at 0 %, they risk getting over-discharged by their BMS (Battery Management System). But, 50 % is totally impractical for a laptop. Your teacher is right that overcharging or over-discharging Li-ion cells would be bad, but the BMS in the battery prevents you from doing that.
  
  
• Electronic: laptop batteries include a BMS (Battery Management System) that needs to check the capacity of the cells, and the only way to do that is to go through a full charge-discharge cycle. This is purely for the convenience of the user: knowing how much juice you have left. EDIT See jimbo21's excellent explanation, below)
  
  So: no, it is not true that its good for laptop batteries themselves to die once a month; yes, it's good for the user to let laptop batteries to die once a month.
  
  Qualifications: I am the author of a book on the subject.

Yes

I too am fine with users who are active in the sub linking to their own on topic stuff. Going on the unique spelling of the username, I think it's this:

http://www.amazon.com/Battery-Management-Systems-Large-Lithium/dp/1608071049

Looks like it's for bigger systems than RC batteries.

/u/1davide I'll delete if you want to stay anonymous, but your username I suspect you aren't trying to :-)