Starguide - A Practical Guide to Astro-Photography

Addendum - Electrical Equipment

Celestron Powertank LiFePO4 84 Wh

updated: 2025-04-09

Capacity: 84 Wh or 7 Ah @ 12V

Charge Voltage: 16V

Output Voltage: 12V and 5V 

Max. Current: 3A

Battery durability: 6h (see footnote below!)

Battery Type: LiFePO4 rechargeable

Weight: 1080g

Additional red and white illumination

To power your telescope:

Press the power button on the control panel twice to activate power. The battery indicator lights will blink in sequence to show that power is flowing.

To charge USB devices:

Press the Power button on the control panel once to begin charging. A green light will appear next to the USB port showing that the power is flowing.

Restriction: The PowerTank can power either the 12V output or the USB outputs, but not both at the same time.

Decreasing capacity: I have been using the Power Tank since 2018, according to the test in Apr. 2025, the remaining capacity with a consumption of 16.5W corresponding to 1.4A (ASI-2600 MC AIR and ZWO AM3 Mount) is sufficient for a maximum operating time of approx. 2.5 h.