Celestron – PowerTank 17 Telescope Battery – Rechargeable Portable 12V Power Supply for Computerized Telescopes – 204 Wh Power – Built–in AM/FM Radio, Siren, 2 USB Ports
https://www.amazon.com/dp/B0001PNJXO?tag=dmflip-20&linkCode=ogi&th=1&psc=1
Celestron – PowerTank 17 Telescope Battery – Rechargeable Portable 12V Power Supply for Computerized Telescopes – 204 Wh Power – Built–in AM/FM Radio, Siren, 2 USB Ports
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