Last updated: 15 December 2003
Sent: Saturday, December 13, 2003 12:15:18 From: Flundberg77@wmconnect.com I found that my ETX 70 was pretty under powered using the six AA batteries ( nominal nine volts ) in the supplied battery holder. Knowing that it would run much better on 12 volts I Purchased an eight AA battery holder from Radio Shack, #270-378B. I drilled two 7/64 holes in the corners and made a loop to hang it by using some 14 gage insulated electrical wire. After drilling the holes, the adjacent slots next to the positive battery contacts must be carved deeper to provide clearance between the wire mounting loop and the batteries. I also made an extension wire for it using two 9V battery snap connectors, Radio Shack #270-324. These must be wired together red wire to black wire to get the correct polarity. Be sure to verify polarity before using! See attached picture of battery holder and extension wire. I then stuck an adhesive backed RCA telephone wire hook, purchased at Home Depot, to the top surface of the telescope base to hang the battery holder by. These hook are white so I blackened it using a permanent marking pen. See attached picture of installation. My telescope now operates much better on the 12 volts this supplies. Of course as with any modification suggested you must exercise care and realize that neither I or this site accept responsibility for any problem that may arise. F Lundberg
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