I was hunting around for an alternative to the Meade LXPS 18 battery which is expensive for the features offered. By chance, I came across an exact match offered under a different brand. Here's the link: https://www.rocksola...=36521513025697 you go the website, it's an exact match for the Meade. It's now available on Amazon at a great price.
The DC out jack is 5.5mm x 2.1mm so an adapter is necessary to go to 2.5mm on the LX90 I have. I found that cable on Agena Astro Products. It is a Pegasus PEG-CABL-2125.
Hope this is of use.
Sorry, I left out the link.
Edited by CP, 01 September 2021 - 01:43 PM.