Telescope Eyepieces, Filters and Accessories: Page 2

Rugged design make it the perfect outdoor power supply - Ideal outdoor portable charging solution for your electronic gear.  Portable power pack for your computerised Celestron telescope - Using Lithium Iron Phosphate (LiFePO4) chemistry.  Smaller, lighter, safer, and easier to maintain - Than lithium-ion and sealed lead acid designs.  Up to 2000 charge cycles - Four times more than lithium-ion and seven times more than sealed lead-acid designs.  Un recharged shelf life of up to ten years Three times better than lithium-ion and ten times better than sealed lead-acid designs.  Battery shuts off automatically when insufficient current flow is detected - Prevent you from inadvertently draining your battery.  

Large capacity - 17000 Mah provides several hours of power to your Celestron telescope.  Charge other devices - The PowerTank 17 also features two 12v and two 5V output ports which allow you to charge multiple devices.  Torch - The built-in torch with a tilting head allows you to navigate with ease under the dark night sky.  Radio - The PowerTank also comes with a built-in siren and AM/FM radio for emergencies.