4.0 Open Box Battery Pack

You’ve got goals and so do we—like keeping you charged wherever your day takes you. Get continuous data for days on a single charge with our waterproof* battery pack that enables you to charge on the go while you wear it. The Images here represent various cosmetic blemishes that you might see. The battery that you receive may look different, but has passed our functional testing. Open Box Battery Packs are either pre-loved or have cosmetic flaws, but have been fully inspected to meet our functionality standards.

To charge your WHOOP® 4.0, simply slide the battery pack on your device to charge on the go. Use the included USB cable to recharge your battery pack from a laptop. 

*IP68 dustproof and water-resistant up to 1 meter for 2 hours.