so there is limited spinning or swaying from the spray boom while in use

and an inline spray gun

Voltage protection - will not accept higher amperage input

ComfortStraps backpack system

the STORM 2

18V/5.2Ah Tri-Zone Lithium-Ion Battery Pack Compat Storm Series so there is limited spinningRechargeable Lithium ion battery for FlowZone sprayers. This durable battery pack is rated for up to 1,000 charge cycles. Spray continuously for over 3 hours with 3X protection battery technology so that you never have to worry about: 1. Overheating cuts current if temperature becomes too hot 2. Over charging will stop charging at 100% charge level 3. Voltage protection will not accept higher amperage input Never be surprised by a dead battery thanks