How do Celestron PowerTanks compare against each other?

Here is how each Celestron Powertank stacks up against the other:

 

PowerTank Lithium Pro
(18768)

PowerTank Lithium
(18771)

PowerTank 12v, Power Supply
(18774)

PowerTank 17
(18777)

Battery Capacity: 158.74 Wh 86.4 Wh 84 Wh 204 Wh
Charging Input 16VDC @ 2000mA 16VDC @ 2000mA 15VDC @ 800mA 15VDC @1500mA
Charge Time (from flat) 6 hours 3 hours 16 hours 20 hours
Telescope Power Port 12VDC @ 5000mA, Tip positive 12VDC @ 3000mA, Tip positive No No
Car Battery Adapter Port 12VDC @ 10A, Tip positive None 12VDC @ 10A, Tip positive 12VDC @ 10A, Tip positive
USB Charging Port 1 Output 5VDC @ 2100mA 5VDC @ 1000mA 5VDC @ 1.5A 5VDC @ 1.5A
USB Charging Port 2 Output 5VDC Quick Charge 5VDC @ 2100mA 5VDC @ 1.5A 5VDC @ 1.5A
Light Panel Red or White with two brightness settings for each color Red or White with two brightness settings for each color White LED spotlight and red lensed LED flashlight White LED spotlight and red lensed LED flashlight
Weatherproof/Dustproof IP-65 rating IP-65 rating No No
Telescope Power Cord 6.5 ft (2 m) with connector for Celestron telescopes 6.5 ft (2 m) with connector for Celestron telescopes 10 ft (3 m) long car battery adapter 10 ft (3 m) long car battery adapter
Strap 2” loop strap for attachment to tripod leg 2” wide hook & loop strap for attachment to tripod leg & a 10" hanging strap Shoulder strap None
Product Dimensions 8.75" x; 6" x 4"  7.5" x 3"  12" x 9.5" x 5.5" 14" x 13" x 5.5" 
Product Weight 4.5 lbs 2.25 lbs 8.5 lbs 17.5 lbs
Included Items Battery pack| AC mains charger| power cord for Celestron telescopes| strap for attaching to tripod Battery pack|AC mains charger|Power cord for Celestron telescopes|Strap for attaching to tripod|Strap for hanging Battery pack|AC mains charger|Car battery adapter cable Battery pack|AC mains charger|Car battery adapter cable|