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Replacing Powertank 17 Battery Instructions & Pics

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#1 musicwon

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Posted 28 July 2009 - 02:34 PM

Your Powertank need a Replacement Battery? In my case, it was cheaper than buying a new Powertank 17 - plus I got a better battery.

The Celestron directions on how to take it apart are not clear - as there are some 'secret' screws not mentioned in the PDF --- nor is the PDF intended to help you replace the battery. Powertank Manual PDF So here is Musicwon's pictorial directions to help you out.

The battery in the unit is a 7.13" X 3.03" X 6.57" (LxWxH) 12V 17Ah sealed lead-acid rechargable battery.

Here is a link to a possible battery replacement - the $49.95 ($63.69 Shipped for my situation) Werker WA12-18NB Werker WP18-12 for $49.95

A new Powertank 17 as of July 28 2009 costs $100 plus shipping. So a replacement battery is a good move for $49.99 plus shipping (or no shipping if you have a local supply).

Here are a bunch more that will work
Celestron Powertank 17 Battery replacements


A BIG THANK YOU to Randy (B1Gred), David Knisley, Uncle Rod Mollise and Artic Eddie for the leads and information I needed to do this!

#2 musicwon

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Posted 28 July 2009 - 02:39 PM

Here is a nice pictorial of what to expect and what is inside a Powertank 17

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#3 musicwon

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Posted 28 July 2009 - 02:41 PM

Nice little thing about the Powertank 17 is that the red light is detachable. Notice the 'fishing reel style" spool to reel the wire in and out. I never knew this until I read the manual about taking it apart. Be aware of this when you take it apart.

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#4 musicwon

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Posted 28 July 2009 - 02:43 PM

Make sure before you open it the power switch is in the OFF position!

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#5 musicwon

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Posted 28 July 2009 - 02:44 PM

Unscrew the screw on the big lamp --- this is the longest screw.

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#6 musicwon

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Posted 28 July 2009 - 02:47 PM

On each side of the screw holding the big lamp there are plastic washers on each side - take these off and store in a safe place.

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#7 musicwon

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Posted 28 July 2009 - 02:50 PM

Now you will need a long THIN philips head screw driver. The fat shaft red driver does not fit but the thin shaft yellow driver does. Some of the holes go deep in. You will need to take out 16 screws. Some are hidden - but you have me to guide you!

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#8 musicwon

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Posted 28 July 2009 - 02:52 PM

Pull the charging clamps out of their stored postion - you need to get to some secret screws here.

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#9 musicwon

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Posted 28 July 2009 - 02:53 PM

Pull off the rubber stopper behind where the big lamp was.

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#10 musicwon

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Posted 28 July 2009 - 02:55 PM

OK --- Now for the first of two secret screw holes. The first is inside the storage compartment.

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#11 musicwon

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Posted 28 July 2009 - 02:56 PM

Now take off the clear plastic below the compartment. Three screws here.

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#12 musicwon

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Posted 28 July 2009 - 02:58 PM

When you take off the clear plastic in the previous step you will see the second screw hole. Unscrew this screw.

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#13 musicwon

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Posted 28 July 2009 - 03:02 PM

Now take all of the obvious screws out --- a total of 16 plus the long one for the big lamp. You can now pry apart the two half's. It took a bit of force for mine using a flat head screw driver. Careful of the permanent wires to the speaker - you might cut them if you are not aware of where they are.

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#14 musicwon

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Posted 28 July 2009 - 03:04 PM

Wires to be careful of cutting as you open the half off - the speaker wire.

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#15 musicwon

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Posted 28 July 2009 - 03:06 PM

And there she be! The 7.13" X 3.03" X 6.57" (LxWxH) 12V 17Ah sealed lead-acid rechargable battery!

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#16 musicwon

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Posted 28 July 2009 - 03:10 PM

A 5/16 socket wrench will take off the leads to the battery. This was a set from my Grandfather. He would be proud - he was always taking about the problems of the "throw away society." It feels great to fix it and keep it new and working!

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#17 musicwon

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Posted 28 July 2009 - 03:11 PM

The battery is out!

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#18 musicwon

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Posted 28 July 2009 - 03:12 PM

Picture of the battery.

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#19 musicwon

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Posted 28 July 2009 - 03:16 PM

Top of the battery. Battery dimensions 7.13" X 3.03" X 6.57" (LxWxH).

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#20 musicwon

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Posted 28 July 2009 - 03:17 PM

Length pic

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#21 rookie

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Posted 28 July 2009 - 07:31 PM

Great Thread! Thanks for providing these instructions and pictures.
:goodjob:

#22 musicwon

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Posted 28 July 2009 - 09:02 PM

Thanks Rookie!

#23 mypontiac

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Posted 29 July 2009 - 06:10 PM

Wow!

#24 mypontiac

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Posted 29 July 2009 - 06:11 PM

Please add posts and pics of the new install! :jump:

Sean

#25 musicwon

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Posted 29 July 2009 - 06:26 PM

Thanks Pontiac - I appreciate it!

I will post pics of the new install as soon as I get my new battery in the mail. : )






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