How bright is the Stansport 500 Lumen LED Lantern?

It is rated at 500 lumens from one SMD LED, which is enough to light a small tent or a cooking table. It is a single brightness level, so there is no dimming.

What batteries does it take, and are they included?

It runs on three D-cell alkaline batteries, and they are not included. Plan to bring a set, since D cells are heavier and cost more than AA.

Can it be hung inside a tent?

Yes. It has a hanging loop and is designed to hang, and it is water resistant for damp conditions. Keep it off the tent fabric and away from open flame.

Is it rechargeable or USB-powered?

No. It is battery-only, so there is no USB charging or built-in rechargeable pack. That makes spare D cells the only way to keep it running.

How big and heavy is it?

It is about 7.25 inches tall and 3.5 inches wide, with a thermoplastic body and rubber accents. Loaded with three D cells it is noticeably heavier than a small AA lantern.