A:AnswerThe Blade Max has a higher price because it comes with a larger battery (4 .0 Ah Lithium-Ion Battery vs the 3.0 Ah that comes with the Blade+), a Microfiber Hard Floor Nozzle, and a Motorized Pet tool attachment.
A:AnswerHello Gary,
It is perfectly safe to charge the battery prior to draining the entire charge. These batteries will last for approximately 300 full cycles or 600 half cycles. Thank you!
The Hoover Team