Canon EOS 5D Mark III Instruction Manual (en)

Use of genuine Canon accessories is recommended
This product is designed to achieve excellent performance when used with 
genuine Canon accessories. Canon shall not be liable for any damage to this 
product and/or accidents such as fire, etc., caused by the malfunction of non-
genuine Canon accessories (e.g., a leakage and/or explosion of a battery 
pack). Please note that this warranty does not apply to repairs arising out of the 
malfunction of non-genuine Canon accessories, although you may request 
such repairs on a chargeable basis.
Battery Pack LP-E6/LP-E6N is dedicated to Canon products only. Using it 
with an incompatible battery charger or product may result in malfunction or 
accidents for which Canon cannot be held liable.