Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.


Replacement battery for 7Ah power tanks

Recommended Posts

When, after a couple of years, the low-quality battery that typifies 7Ah "power tanks" no longer holds a decent amoutn of charge, changing the battery can give it a new lease of life.

I've recently done this, and am impressed by how much better it is than even when it was new. The battery I used is a Yuasa NP7-12 12v 7Ah battery, a deep-cycle battery sold for alarm systems. It's a perfect fit in the "power tank" case; just needed me to cut the ring terminals of the battery leads and crimp some spade termnals on.

£16 and half an hour.

Edited by BinocularSky
  • Like 3

Share this post

Link to post
Share on other sites

Unfortunately the 22Ah one is a tad (*) too large for the 7Ah "power tank".

However, while looking for the dimensions, I found this site where the Yuasa is a lot cheaper than the one I bought:


(In case anyone is thinking of doing the replacement)

For very large values of "tad".

Share this post

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recently Browsing   0 members

    No registered users viewing this page.

  • Create New...

Important Information

By using this site, you agree to our Terms of Use.