The Power Pack includes 6 AA NiMH rechargeable batteries that are consistently being reenergized by a highly efficient solar cell that keeps your cameras powered up when needed. For your convenience, the Solar Power Pack mounts easily to any tree, or can be attached using any of the Browning camera mounts. Then, once in place, the solar panel can easily be adjusted to the perfect angle to ensure that it is exposed to the highest levels of sunlight possible for optimal performance.