6F Gill St., Woburn, MA 01801


Sean Walker

iOptron developed the PowerWeight ($119) as a novel solution to the problem of bulky power packs for equatorial mounts. The PowerWeight is designed to fit on the counterweight shaft of the iEQ45 and replaces the mount’s 7-pound (3.2-kg) weight, or works as an additional counterweight when using heavier telescopes. The unit contains six heavy-duty lead-acid rechargeable battery cells and is rated for 12-volts and 8 amp-hours — enough to run your mount for an entire evening. Includes power cable and AC charger.'s New Product Showcase is a reader service featuring innovative equipment and software of interest to amateur astronomers. The descriptions are based largely on information supplied by the manufacturers or distributors. Sky & Telescope assumes no responsibility for the accuracy of vendors statements. For further information contact the manufacturer or distributor. Announcements should be sent to Not all announcements will be listed.




Image of belliott4488


February 6, 2021 at 10:46 am

Does anyone know why this product was discontinued, or why there aren't other products like it available? It seems like such a good idea. Lead acid batteries are reliable power sources, but they're heavy - and so are counterweights. Combining them seems like a no-brainer.

You must be logged in to post a comment.

You must be logged in to post a comment.