Thought it would be very useful to start a thread listing Equipment, the External Battery Voltage required and Power Plug Sizes. Post your info in the thread and I will maintain the list on the first page. Please feel free to add, correct, update or comment on any of the information provided.
RecordersFostex DC-R302 / 9-24v / Size M, 5.50mm OD × 2.10mm ID / Center pin (+) Ring (-)
Fostex FR2-LE / 12v / Size O (M & N Known to work), 5.50mm OD × 2.80mm ID / Center pin (+) Ring (-) / Known to run on 6, 7.2, 9, 9.6v
iRiver h120 / 5v / Size H, 3.40mm OD × 1.30mm ID / Center pin (+) Ring (-) / Known to run on 5v USB w/ no issues
Korg MR-1 / 5v / Size B, 4.00mm OD × 1.70mm ID / Center pin (+) Ring (-)
Korg MR-1000 / 12v / Size M, 5.50mm OD × 2.10mm ID / Center pin (+) Ring (-)
M-Audio Microtrack / 5v / USB Mini-B / Red wire (+) Black wire (-)
M-Audio Microtrack II / 5v / USB Mini-B / Red wire (+) Black wire (-)
Marantz PMD-561 / 5v / Size B, 4.00mm OD × 1.70mm ID / Center pin (+) Ring (-) / Normal Polarity
Marantz PMD-620 / 5v / Size B, 4.00mm OD × 1.70mm ID / Center pin (+) Ring (-) / Normal Polarity
Marantz PMD-660 / 5v / Size B, 4.00mm OD × 1.70mm ID / Center pin (+) Ring (-) / Normal Polarity
Marantz PMD-661 / 5v / Size B, 4.00mm OD × 1.70mm ID / Center pin (+) Ring (-) / Normal Polarity, Known to run on 5v USB w/ no issues
Marantz PMD-671 / 15v / Size M, 5.50mm OD × 2.10mm ID / Center pin (+) Ring (-) / Known to run on 9v with no issues
Marantz PMD-706 / 5v / Micro-USB port, Type B
Roland R-05 / 3v / Size B, 4.00mm OD × 1.70mm ID / Center pin (+) Ring (-) / Normal Polarity, Known to run on 5v USB w/ no issues
Roland R-26 / 9-16v / Size M, 5.50mm OD × 2.10mm ID / Center pin (-) Ring (+)
Reverse PolarityRoland R-88 / 9-16v / 4 pin XLR Female / pin 4 for (+) pin 1 for (-)
Roland/Edirol R-4 / 9-???v / Size M, 5.50mm OD × 2.10mm ID / Center pin (-) Ring (+)
Reverse PolarityRoland/Edirol R-44 / 9-16v / Size M, 5.50mm OD × 2.10mm ID / Center pin (-) Ring (+)
Reverse PolarityRoland/Edirol R-4 Pro / 9-16v / 4 pin XLR Female / pin 4 for (+) pin 1 for (-)
Roland/Edirol R-09 / 3v / Size B, 4.00mm OD × 1.70mm ID / Center pin (+) Ring (-)
Roland/Edirol R-09hr / 3v / Size B, 4.00mm OD × 1.70mm ID / Center pin (+) Ring (-) / Known to run on 5v USB w/ no issues
Sonosax SX-R4 / 6-18v / 4-pin Hirose connector / pin 4 for (+) pin 1 for (-)
Sonosax SX-R4+ / 9-18v / 4-pin Hirose connector / pin 4 for (+) pin 1 for (-)
Sonosax SX62R / 6-18v / 4-pin Hirose connector / pin 4 for (+) pin 1 for (-)
Sony PCM D-50 / 6v / Size B, 4.00mm OD × 1.70mm ID / Center pin (+) Ring (-)
Sony PCM M-10 / 3v / Size A, 2.35mm OD × 0.70mm ID / Center Pin (+) Ring (-)
Sound Devices MixPre-3 & MixPre-6 / 5v / USB C
Sound Devices MixPre-10T / 12v / 4-pin Hirose connector / pin 4 for (+) pin 1 for (-)
Sound Devices 7xx Series / 10-18v / 4-pin Hirose connector / pin 4 for (+) pin 1 for (-)
Tascam HD-P2 / 12v / Size M, 5.50mm OD × 2.10mm ID / Center pin (+) Ring (-) / Known to run on 9v with no issues
Tascam HS-P82 / 11-16v / 4 pin XLR Female / pin 4 for (+) pin 1 for (-)
Tascam DR-680 / 8-13v / Size M, 5.50mm OD × 2.10mm ID / Center pin (+) Ring (-)
Tascam DR-680mkII / 12v / Size C, OD 4.75mm x ID 1.7mm Center Pin (+) Ring (-)
Tascam DR100 / 5v/ Size B, 4.00mm OD × 1.70mm ID / Center pin (+) Ring (-) / Normal Polarity
Tascam DR100mkii / 5v/ Size B, 4.00mm OD × 1.70mm ID / Center pin (+) Ring (-) / Normal Polarity
Tascam DR-2D / 5v / Size B, 4.00mm OD × 1.70mm ID / Center pin (+) Ring (-) / Normal Polarity
Zoom F4 / 9-16v / 4-pin Hirose connector / pin 4 for (+) pin 1 for (-)
Zoom F8 (Hirose Port on the Side) / 9-16v / 4-pin Hirose connector / pin 4 for (+) pin 1 for (-)
Zoom F8 (DC Port on the Back) / 12v / Size M, 5.50mm OD × 2.10mm ID / Center pin (+) Ring (-)
Zoom h4 / 9v / Size M, 5.50mm OD × 2.10mm ID / Center pin (-) Ring (+)
Reverse PolarityZoom h4n / 5v / Size B, 4.00mm OD × 1.70mm ID / Center pin (+) Ring (-) / Normal Polarity
Pre-Amps/Mixers/Phantom PowerAETA PS-P3 / 6-12v / Size M, 5.50mm OD × 2.10mm ID / Center pin (+) Ring (-)
Apogee Mini-MP / 6-14v / Size M, 5.50mm OD × 2.10mm ID / Center pin (+) Ring (-)
Areco MP-2 early versions / 9v / Size M, 5.50mm OD × 2.10mm ID / Center pin (+) Ring (-) / No perfect Plug is Known, needs to be gaff taped in place
Areco MP-2 later versions / 12v / Switchcraft S761K locking type connector / Center pin (+) Ring (-) Known to run on 9v with no issues
Audioroot Femto / 12-18v / 4-pin Hirose Male connector / pin 4 for (+) pin 1 for (-)
Audioroot μPRE / 12-18v / Switchcraft S760K locking type connector / Center pin (+) Ring (-)
Audioroot μPRE MKII / 9-18v / 4-pin Hirose Male connector / pin 4 for (+) pin 1 for (-)
Denecke PS-1A / 6.8-18v / 3.50mm (1/8") TS audio plug / Tip (+) Sleeve (-)
Denecke PS-2 / 6.8-18v / 3.50mm (1/8") TS audio plug / Tip (+) Sleeve (-)
Denecke PS-T / 6.8-18v / 3.50mm (1/8") TS audio plug / Tip (+) Sleeve (-)
EEA PS-P2 / 5-9v / Size M, 5.50mm OD × 2.10mm ID / Center pin (+) Ring (-)
Grace Design Lunatec V2 (6v Version) / 6-12v / 4 pin XLR Female / pin 3 for (+) pin 2 for (-)
Grace Design Lunatec V2 (12v Version) / 4 pin XLR Female / pin 4 for (+) pin 1 for (-)
Naiant Little Box / 5-16v / DIN-3 connector / pin 2 (+) Pin 1 & 3 (-)
Rupert Neve Designs Portico 5012 / 12v / Size M, 5.50mm OD × 2.10mm ID / Center pin (+) Ring (-)
Schoeps NT 222 Tube Preamp / 12v / Schoeps DC Connector tip model # DIN45323 / Center pin (+) Ring (-)
Schoeps VMS 02 IB / 9-16v / Schoeps DC Connector tip model # DIN45323 / Center pin (-) Ring (+)
Reverse PolaritySchoeps VMS 5 U / 5-15v / Schoeps DC Connector tip model # DIN45323 / Center pin (+) Ring (-)
Schoeps VMS 52 UB / 9-16v / Schoeps DC Connector tip model # DIN45323 / Center pin (-) Ring (+)
Reverse PolarityShure FP24 / 5-14v / Switchcraft S761K locking type connector / Center pin (+) Ring (-)
Sonosax SX-M2 / 12-24v / Size M, 5.50mm OD × 2.10mm ID / Center pin (+) Ring (-) / No perfect Plug is Known, needs to be gaff taped in place
Sonosax SX-M32 /6-18v / 4-pin Hirose connector / pin 4 for (+) pin 1 for (-)
Sound Devices Mixpre (early version) / 5-14v / Switchcraft S761K locking type connector / Center pin (+) Ring (-)
Sound Devices Mixpre (late version) / 5-18v / 4-pin Hirose Male connector / pin 4 for (+) pin 1 for (-)
Sound Devices MP2 / 5-14v / Switchcraft S761K locking type connector / Center pin (+) Ring (-)
Sound Devices 302 / 5-18v / 4-pin Hirose Male connector / pin 4 for (+) pin 1 for (-)
Sound Devices 552 / 10-18v / 4-pin Hirose Male connector / pin 4 for (+) pin 1 for (-)
Sound Devices 664 / 10-18v / 4-pin Hirose Male connector / pin 4 for (+) pin 1 for (-)
Wendt X2 Audio Mixer / 9-18v / Size M, 5.50mm OD × 2.10mm ID / Center pin (-) Ring (+)
Reverse PolarityWendt X3 Audio Mixer / 9-18v / 4-pin Hirose Male connector / pin 4 for (+) pin 1 for (-)
Wendt X4 Audio Mixer / 9-18v / Size M, 5.50mm OD × 2.10mm ID / Center pin (-) Ring (+)
Reverse PolarityWendt X5 Audio Mixer / 12-18v / 4-pin Hirose Male connector / pin 4 for (+) pin 1 for (-)
Preamps w/ Analog to Digital ConvertersApogee AD-1000 / 11.5-15v / 15-pin HD connector / Pin 15 (+) Pin 14 (-)
Apogee Mini-Me / 6-14v / Size M, 5.50mm OD × 2.10mm ID / Center pin (+) Ring (-)
Audioroot uPRE-MKII / 9-18v / 4-pin Hirose Male connector / pin 4 for (+) pin 1 for (-)
Denecke AD-20 / 6-24v / 3.50mm (1/8") TS audio plug / Tip (+) Sleeve (-)
Grace Design Lunatec V3 (6v Version) / 6-12v /Switchcraft S760K locking type connector / Center pin (+) Ring (-) /
Grace Design Lunatec V3 (12v Version) / Switchcraft S760K locking type connector / Center pin (+) Ring (-)
Edirol UA5 / 9v / Size M, 5.50mm OD × 2.10mm ID / Center pin (-) Ring (+)
Reverse Polarity / Know to run off 7.2v w/ no issues
Sound Devices Mixpre-D / 10-17v / 4-pin Hirose Male connector / pin 4 for (+) pin 1 for (-)
Sound Devices USBPre2 / 5v / USB-2 or USB-3 / Red wire (+) Black wire (-)
Analog to Digital ConvertersBenchmark ad2k+ / 11-18v / 4 pin XLR Female / pin 4 for (+) pin 1 for (-)
Mytek Stereo192 adc / 7-12v / Size-N, 5.50mm OD × 2.50mm ID / Center pin (+) Ring (-)
External BatteryAnker Astro Pro 14,400mAh Multi-voltage / 9,12 & 5v USB Port / Size N, 5.50mm OD × 2.50mm ID
http://www.ianker.com/support-c1-g212.htmlAnker Astro Pro2 20000mAh Multi-voltage / 12,16,19v & 5v USB Port / Size M, 5.50mm OD × 2.10mm ID
http://www.ianker.com/product/79AN20L-SAAnker Astro3 1000maH / Astro Pro10000mAh Multi-voltage / 9,12v & 5v USB Port / Size M, 5.50mm OD × 2.10mm ID
http://www.ianker.com/anker-astro-external-battery-backup-charger/product/79UN5V2-B16P100AAnker 2nd Gen Astro Pro 15000mAh 3-Port / 9,12v & 5v USB Ports / 4.30 OD x 1.60 mm ID (Size B, 4.00mm OD × 1.70mm ID Should work)
http://www.ianker.com/product/79AN7905-BAAnker 2nd Gen Astro Pro2 20000mAh 4-Port / 9,12v & 5v USB Ports / 4.30 OD x 1.60 mm ID (Size B, 4.00mm OD × 1.70mm ID Should work)
http://www.ianker.com/product/79AN7906-BAAPP-GD20000A Portable Power Bank 20000mAh / 9,12,16,19v & 5v USB Port / Size N, 5.50mm OD × 2.50mm ID
http://www.ebay.com/itm/Power-Bank-High-Capacity-20000mAh-Multi-voltage-5V-9V-12V-16V-19V-20V-/281028105712?pt=PDA_Accessories&hash=item416e9495f0Battery Space Universal External Battery For Most of Laptop / 16v & 19v / Size M, 5.50mm OD × 2.10mm ID
http://www.batteryspace.com/1619v4ahli-ionuniversalexternalbatteryformostoflaptop.aspxDynex DVD / 9v / Size B, 4.00mm OD × 1.70mm ID
(Discontinued) http://www.dynexproducts.com/products/video-accessories/DX-LI101.htmlUltralast DVD / 9v / Size B, 4.00mm OD × 1.70mm ID
(Discontinued) http://www.ultralastbatteries.com/battery-match/?R=&page=details&model=UL-DVDL&category_id=1Bixnet BP160 / 12,19v & 5v USB Port / Size N, 5.50mm OD × 2.50mm ID
http://www.bixnet.com/unpowbat.htmlBattery Geek Mobile Power Station (Different Models) / Size N, 5.50mm OD × 2.50mm ID
http://www.thebatterygeeks.com/External-Laptop-Batteries-for-PC-Mac-Tablets-s/1.htmTekkeon MP3300 / 3,4.5,5,6,7.5,9,12,14v / KPPX-3P Kycon DC Power Connector
(Discontinued) http://www.tekkeon.com/downloads/UG_mpALL_33_3400.pdfTekkeon MP3400 / 5,6,7.5,9,12,14,16,19v / KPPX-3P Kycon DC Power Connector
(Discontinued) http://www.tekkeon.com/downloads/UG_mpALL_33_3400.pdfTekkeon MP3450 / 5,6,7.5,9,12,14,16,19v & 5v USB port / KPPX-3P Kycon DC Power Connector
http://www.tekkeon.com/products-mypowerall.htmlDigital Concepts PP-99 / 3,4.5,5,6,6.5,8.4v / Size N, 5.50mm OD × 2.50mm ID
DigiCom DC-EPP3000 / 3,4.5,5,6,6.5,8.4v / Size N, 5.50mm OD × 2.50mm ID
http://www.amazon.com/Digicom-DC-EPP3000-Xtreme-Power-Pack/dp/B00028VKRMNaztech PB15000 Universal Power Bank Charger / 9,12,16,18,19,20,21v & 5v USB Port / Size N, 5.50mm OD × 2.50mm ID
http://www.amazon.com/gp/product/B007URKIGC/ or ebay source here:
Universal Power Bank 18000mah / 9,12,16,18,19,20,21v & 5v USB Port / Size N, 5.50mm OD × 2.50mm ID
http://www.ebay.com/itm/130691172867?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649RAVPower 23000mAh Portable Charger Power Bank 9V/12V/16V/19V/20V /9,12,16,19,20v & 5v USB Port / Size N, 5.50mm OD × 2.50mm ID
http://www.ravpower.com/ravpower-23000mah-portable-charger-external-battery-charger.htmlMaxoak k2 50000mah 12V/20v/4 USB Ports Size M, 5.50mm OD × 2.10mm ID
https://www.amazon.com/MAXOAK-50000mAh-Portable-External-Notebook-Most/dp/B00YP823NA/ref=sr_1_1?m=A3H5DUG78CAIWF&s=merchant-items&ie=UTF8&qid=1469130154&sr=1-1XTPower MP-10000 External Battery Pack with 10000mAh / 9V,12V,5V USB / Size M, 5.50mm OD × 2.10mm ID
https://www.amazon.com/XTPower-MP-10000-External-10000mAh-included/dp/B00935L44E/ref=sr_1_3?s=wireless&ie=UTF8&qid=1487270947&sr=1-3&keywords=battery%2Bpack%2B9v%2Boutput&th=1TalentCell Rechargeable 72W 9,12v & 5v USB Port / 12V Port = Size M, 5.50mm OD × 2.10mm ID 9v Port = Size N, 5.50mm OD × 2.50mm ID
http://www.talentcell.com/products/12v-battery/12v-battery-8300mah.htmlTalentCell Rechargeable 12V 6000mAh/5V 12000mAh / Size M, 5.50mm OD × 2.10mm
http://www.talentcell.com/products/12v-battery/12v-battery-12000mah.htmlTalentcell Rechargeable 12V 6000mAh / Size M, 5.50mm OD × 2.10mm
http://www.talentcell.com/products/12v-battery/12v-battery-6000mah.htmlTalentCell Rechargeable 12V 3000mAh / Size M, 5.50mm OD × 2.10mm
http://www.talentcell.com/products/12v-battery/12v-3000mah-dc-lithium-ion-battery-pack.htmlSee the Attached Radio Shack Adapt-A-Plug Guide as reference