Jump to content

sgl_imaging_challenge_banner_31.thumb.jpg.b7a41d6a0fa4e315f57ea3e240acf140.jpg

Replacement battery for Celestron 7aH Powertank


Recommended Posts

Having forgotten to regularly charge my powertank it now only lasts around the 3 hour mark and I am only using it to power my Celestron 8SE. I tried searching on the forum for suitable replacement batteries or measurements as I just wanted to replace the battery. I couldn't find this info anywhere so I took the side off (8 screws on the 7ah version—see image—the only hidden screw was in the accessory tray under the lid—although you do need a long-bladed (?) Philips to reach some of the screws). Once off I measured the battery and it is Length 150mm, Height 100mm, Width 65mm. I thought at first that I would be able to fit a larger capacity battery but soon realised that you can't unless you started modifying the case. The largest capacity battery I could find with the right measurements was a Yuasa Yucel Y9-12 which is a 9ah model priced at £15.99 from Hardwareexpress. I hope this will help others with the 7ah powertank who want to change the battery and who can use a screwdriver. 

IMG_0072 copy.jpg

IMG_0073.jpg

IMG_0074.jpg

  • Like 3
Link to post
Share on other sites
  • 2 years later...
On 12/04/2017 at 17:47, Space Oddity said:

Having forgotten to regularly charge my powertank it now only lasts around the 3 hour mark and I am only using it to power my Celestron 8SE. I tried searching on the forum for suitable replacement batteries or measurements as I just wanted to replace the battery. I couldn't find this info anywhere so I took the side off (8 screws on the 7ah version—see image—the only hidden screw was in the accessory tray under the lid—although you do need a long-bladed (?) Philips to reach some of the screws). Once off I measured the battery and it is Length 150mm, Height 100mm, Width 65mm. I thought at first that I would be able to fit a larger capacity battery but soon realised that you can't unless you started modifying the case. The largest capacity battery I could find with the right measurements was a Yuasa Yucel Y9-12 which is a 9ah model priced at £15.99 from Hardwareexpress. I hope this will help others with the 7ah powertank who want to change the battery and who can use a screwdriver. 

IMG_0072 copy.jpg

IMG_0073.jpg

IMG_0074.jpg

Hi, 

Thanks for this, really helpful. I have the same issue. After reading your post, I have ordered a replacement battery and will attempt the fix asap. I had read that once it was dead that was it, so pleased to read that you can replace the battery. Did you find the 9ah has made much of a difference?

Cheers

Simon

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    No registered users viewing this page.

  • Similar Content

    • By stevebty
      Good evening everyone
      I am looking at a SkyProdigy 6 telescope for a friend. the mount had a rattle/lose part. I partially unscrewed the casing and the plastic cylinder pictured below fell out. Anyone got any idea what it is or where is comes from. Looks plastic but can feel metal in the centre.
      Does anyone have a service manual or disassembly guide?
      Many thanks in advance
      Steve


    • By Quetzalcoatl72
      I'm after a cassegrain reflector but I don't know which one to buy,
      I have a celestron c5 and it worked wonders for all fields, I now want the same but twice as powerful as my final upgrade
      I am looking at a c9.5 for £1350 or a c11 for £2000, My question is an extra 2.75" focal worth it for £750 more?
      I will likely purchase one this week
    • By Welsh Dave
      Hello Ladies & Gentleman,
      I would in need of require your assistance for my current tube that I have got. 
      I currently have a Celestron Starlight XLT tube and I am looking for a new Finderscope (This one did not come with as I bought it of one of my Uni friends). I am not fussed into the red dot sites and I would like someone similar to the EXPLORE SCIENTIFIC ES 8x50. 
      Any questions by all means ask :) 

    • By Abhishek Pawse
      Hi guys. Please tell me if collimation is required for the celestron 9.25 edge HD  after using the hyper star system( after putting back the secondary mirror in its place ). Or it holds its collimation.?
      Thanks In advance for help :)
    • By BenR
      Hello
      I am new to astronomy, and recently purchased a Celestron Starsense Explorer LT 114AZ, and just for a start, I used the finderscope to locate exactly a random star, and I looked through the eyepiece and just saw a blurry white image. I was using a 25mm eyepiece lens, and then decided to put on the 2x Barlow lens with the 25mm lens, and nothing changed. Is this normal? What should I do to improve?
      Thanks.
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.