The PowerTank Lithium keeps the charge going for the astronomer on the go. The Lithium Phosphate (LiFePO4) battery chemistry has significant advantages over other battery chemistries.\n\n- The LiFePO4 has an un-recharged shelf life of 10 years compared to 3 years for the Lithium Iron and 6-9 months for a Sealed Lead-Acid battery.\n\n- The battery performance of the PowerTank Lithium degrades at a much slower pace than other chemistries.\n\n- The LiFePO4 can be charged and discharged 2000 times compared to only 500 for a Lithium Iron battery and 300 for sealed lead-acid designs.\n\n- The batteries will last as long as the telescope you use it with!\n\n- The LiFePO4 uses phosphates instead of environmentally hazardous elements like cobalt or lead commonly found in other rechargeable batteries.\n\n- Can withstand higher temperatures than lithium-iron designs and will not be a fire danger if accidentally punctured.\n\nThis combined with it’s rugged design make it the perfect outdoor power supply.\n\nKeep your telescopes, smartphones, tablets, GPS systems, cameras and other USB-powered devices as active as you are with PowerTank Lithium—the ideal outdoor portable-charging solution for your electronic gear.\n\n- Portable power pack for your computerized Celestron telescope using Lithium Iron Phosphate (LiFePO4) chemistry\n- Smaller, lighter, safer, and easier to maintain than lithium-ion and sealed lead acid designs\n- Up to 2000 charge cycles – four times more than lithium-ion and 7 times more than sealed lead-acid designs\n- Un-recharged shelf life of up to 10 years – 3 times better than lithium-ion and 10 times better than sealed lead-acid designs\n- Evironmentally friendly – Does not use toxic heavy metals