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Howdy expat,
Not sure if this applicable, I have a Meade ETX 125PE and where the batteries go, there are cheap metal springs, (flat metal types), that keep the tension onto the batteries. These broke very early in the scopes life which caused issues at the time, .
Another thing would be to power the scope from a 12v plugpack, making sure you get the polarity correct.
I'll use a long extension cord and plugpack before using the Meade internal batteries, just to be sure. A UPS helps in case of blackout and another option is the large gel cells.
Cheers and good luck gettin it sorted.
Damien
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