Are the batteries rechargeable? If so, where do I purchase the charger?

Yes, the 3- and 5-cell batteries are rechargeable. And you don’t need to purchase a charger as we’ve built the charging station right into our patent-pending SmartHub. No wires or extra components to keep track of! No more wondering which drawer you left the charger in. In addition, Deep Sentinel’s 3- and 5-cell systems come with a spare battery, so you always have one ready when you need it.  This way, while the charge time is 3 hours, you can keep the 3 cameras working at all times.