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Author Topic: My Nak 300 battery build with Energizer A23  (Read 1565 times)

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Offline Life In Rewind

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My Nak 300 battery build with Energizer A23
« on: June 14, 2016, 08:45:57 AM »
The Energizer A23 is about the cheapest battery on the rack. Some places you can get 2 for less than 3 bucks.

http://data.energizer.com/PDFs/A23.pdf

12V - shouldn't be a problem for the circuit.

The trick is to fatten and lengthen the battery.

I used some vinyl washers, bibb screws and shrink wrap.

These are old fashioned faucet washers - you can get them at any big home store or your local hardware store.

I used 4 washers per battery. 2 beveled and 2 flat...One beveled and one flat on each end.

I used red beveled ones on the (+) just so I'd have a polarity marker.

First I wrapped the battery with electrical tape to fatten it up.

The washers fit almost perfectly in shrink wrap - so they are easy to stack up.

Trim as you shrink - and the shrink wrap will draw the whole thing together.

The brass Bibb screws friction fit...I might add a pin drop of goop, just in case.

They seemed to work just fine in my TEAC ME-120s.

The parts (except shrink wrap) can all be re-used.

I am a bit concerned about the batteries mAh rating of 55...that seems low.

But - considering I use these mics somewhat infrequently...I dont think thats a problem...

The spec sheet says 81 hours at 8.8 V continuous discharge...

I like the idea that these batteries are cheap and available everywhere - so not a big deal to replace with fresh ones if its a important gig.

Audix M1280/Avantone CK-1/APEX 435/Altec 626A/TEAC ME-120/Sony ECM-999PR/Sony ECM-MS5
TASCAM DR-70D/Tricorder

Offline jagraham

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Re: My Nak 300 battery build with Energizer A23
« Reply #1 on: June 14, 2016, 12:01:10 PM »
Thanks for posting this! I've got an option that I use posted below. I think my method is easier but much more expensive so this is nice to have as a reference for the future. Always possible that the local battery selection changes.

http://taperssection.com/index.php?topic=176879.0

Here's another thread on the topic. I personally use two A544s taped together to equal the size of a AA. This works in the Nak CM-100s and CM-300s and the Teac ME-80s and ME-120s. However, this is about $20 in batteries at my local store.
Mics: Nak CM-300s, Nak CM-100s, CP-1s, CP-2s, AT-853s(Cards, Hypers, Omnis) CA-14s(Cards, Omnis)
Pres: CA STC-9200, CA-UBB
Recorders: Tascam DR-70D, DR-2D, Edirol R-09

ISO: 1 Teac ME-120, CP-3 Caps, AT-853 Subcard Caps

Offline Hypnocracy

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Re: My Nak 300 battery build with Energizer A23
« Reply #2 on: June 14, 2016, 03:32:57 PM »
A177 10.5v @ 110mah $8.40 shipped via Ebay

LINK

I did have some problems with my Shotgun caps...the button connection at the end was longer and had issues getting threads to contact...never had an issue with the normal Cap  & Attenuator Barrel...

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Offline down2earthlandscaper

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Re: My Nak 300 battery build with Energizer A23
« Reply #3 on: June 20, 2016, 01:38:59 AM »
https://www.amazon.com/gp/product/B00CIA97Y0/ref=oh_aui_detailpage_o07_s00?ie=UTF8&psc=1

2 of these stacked and taped together (using enough tape to fatten them up appropriately) works great for the Nak 300's

a single one of these batteries fits perfectly in the Nak 700

They are really cheap too.
Mics: CA-14(cards & omnis) and CA-11(cards & omnis) ; AT853's(cards, hypers, mini shotguns); Busman BSC-1 (cards, hypers, omnis)
Nakamichi CM300's (CP-1,2,3,4) Nakamichi CM700's (cards, omnis)
Tascam PE-120's (cards, omnis) Peluso CEMC-6 (cards and subcards)
DPA 4061's DPA 4022's
Preamps: CA-9100; Naiant Tinybox (12v/48v + PIP 8V); Naiant Littlebox;
DPA MPS6030; Sound Device Mix Pre-D
Decks: Sony PCM M10; Edirol R-4; Zoom H6; Marantz PMD-661; Sound Devices 722

 

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