ATO Original battery for ATO Junghans clock

Ian Crouch

Registered User
May 10, 2011
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I was going through some of my clock projects and came across my Junghans ATO clock complete with original battery. Thought some pictures of the battery may be of interest to members. I am thinking of hollowing it out and converting to a battery holder for a 1.5 v AA battery.

Regards Ian

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Stefan lavriv

Registered User
Oct 30, 2020
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I would suggest replacement with D size battery . They are widely available and you have enough space inside the battery box to fit D size battery holder from e-Bay, Amazon or AliExpress
 

Toughtool

Newbie
Aug 12, 2016
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Panama City, FL
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Timesavers sell this battery, a number 10 and number 3 , for $30.00. Fortunately they also they list the size of the battery so a holder can be used to hold a standard 1.5 volt D cell battery. #10 Or #3 Long Life Clock Battery

#10 Or #3 Long Life Clock Battery
Description: #10 or #3 battery for Kundo and Junghans battery clocks. 1-1/2" x 1-1/2" x 4".
Item #: 10603
Condition: New
$30.00

In lew of a $30.00 per battery, I think I would go the DIY route. If you can solder, the easiest solution is to purchase a D cell holder and install two thumb nuts on top using two flathead screws mounted at the positive end of the holder. Drill two holes, for a pair of 6-32 by 1/2 inch long brass screws and install thumbscrews to connect the clock wires to the battery. The two wires, (Red and Black) should be soldered to the screw heads [in the screw slot]. to make the connection. There should be enough room to clear the top of the battery.

D cell battery holder 4/$7.00: https://www.amazon.com/Slot-Cell-Battery-Holder-Wires/dp/B071YM6RTB/ref=sr_1_1_sspa

Brass thumb nut, 6-32 3/$1.25 at : Everbilt #6-32 tpi Brass Knurled Nut (3-Piece per Bag)-831118 - The Home Depot

Brass Pan Head screw 6-32 1/2" 4/$?.??: Everbilt #6-32 x 1/2 in. Combo Pan Head Brass Machine Screw (4-Pack)-804561 - The Home Depot
 

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