PowerTank Lithium, 12V/5V Power Supply (18771)

OVERVIEW Portable power pack for your computerized 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 & 7 times more than sealed lead-acid designs. Un-recharged shelf life of up to 10 years - 3 times better than lithium-ion and 10 times better than sealed lead-acid designs. Evironmentally friendly - Does not use toxic heavy metals DESCRIPTION The new 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. - The LiFePO4 has an un-recharged shelf life of 10 years compared to 3 years for the Lithium Ion and 6-9 months for a Sealed Lead-Acid battery. - The battery performance of the PowerTank Lithium degrades at a much slower pace than other chemistries. - The LiFePO4 can be ch