A:AnswerHello Blowyer - Sorry to hear the manual is missing from the box. Please contact Greenworks Pro toll-free helpline at 1-855-345-3934 and one of our team members would be happy to send it to you via email.
A:AnswerI believe the Greenworks customer service representative stated that the 4.0 Ah/80 volt battery can be used but isn't much better than the battery that comes with the product at purchase.