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How to make an external battery pack for a Sony M-1 or D-100

Parts List

Here is a list of things you can purchase at Radio Shack for the battery pack. It's assumed that you already have electrical tape and 2 conductor wire. You can use any type of 2 conductor wire, such as speaker wire.

DescriptionPart NumberQtyPrice
1 D Battery Holder 270-403A 1 .99
2 D Battery Holder 270-386A 1 1.59
Coax Style DC Power Plug 274-1532 1 $2.99
(4.0 X 1.77 mm size)
Two conductor wire n/a few feet free
TOTAL:$5.57


Plans

1. Strip both ends of the two conductor wire and the wire on the Battery Sleds, if necessary.

2. Twist together the positive(Red) wire of the 1 D Battery Sled to the lead/positive wire of the 2 conductor wire. Usually, the lead wire of the 2 conductor wire is striped.

3. Twist the negative(Black) wire of the 1 D Sled to the positive(Red) wire of the 2 D Sled.

4. Twist the negative(Black) wire of the 2 D Sled to the negative wire of the 2 conductor wire.

5. Attatch the other lead(positive) 2 conductor wire with the stripe to the center post of the DC Power plug.

6. Attatch the other lead(negative) without the stripe to the terminal that's for the outside of the DC Power plug.

7. Tape up these connections with electrical tape, load it with batteries, and plug it into your deck.

8. If your deck is not powered, disconnect the pack right away. Check all your connections and double check that the red wire's signal gets to the center of the Sony plug and the black wire's signal gets to the outside of the Sony plug.

Your batteries should last 15+ hours with your Sony M-1 or D-100 deck. I originally got the idea how to put this together from another page, which has instructions for the Sony D-7 or D-8 decks. The difference is that the D-7 & D-8 decks require 4 D batteries, rather than 3. For instructions to build the battery pack for a D-7 or D-8 deck, visit Matthew Heydman's page here

charlieab@prodigy.net

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