Using your Black Diamond Apollo 250 Lantern is a breeze. First, you can choose to power it in two ways. You can use the internal rechargeable lithium - ion battery by plugging it in via the USB port. Or, you can insert 3 AA batteries if you're in a hurry or the internal battery is low. To turn on the lantern, just find the power button on the body. You can then adjust the light to your liking. Use the strobe mode for a flashing light, which can be useful in an emergency. The dimming function lets you make the light brighter or dimmer depending on your needs. There's also a power meter to show you how much battery is left, whether it's the internal battery or the AA batteries. When it comes to hanging the lantern, use the collapsible double - hook loop to hang it inside your tent or on a tree branch. If you prefer to place it on a table, unfold the legs for a stable base. As for maintenance, keep the lantern dry as it has an IPX4 rating, which means it can handle some splashes but not full submersion. If you're using the internal battery, try to recharge it fully before storing it for a long time. And if you use AA batteries, remove them when the lantern is not in use for a while to prevent leakage.