PowerMaster A123 Rx, Ignition Packs & Accessories



These A123's are custom-configured for R/C Aircraft in excess of 50 pounds. Finally, Packs built precisely for what you fly and the way you fly it.

It's true. The Packs are 'greener' over here on this side... You'll find the new green shrink covered 'PowerMaster Series' packs and support gear to be just what you need for handling exceptional current loading, high rate fast charging and ease of access for folks using Power Expanders, Power Safe type Digital switches and multiple Receivers.
PowerMaster Series packs are configured for maximum load handling & high rate field charging. These are assembled with screened, matched cells & they are 'double strapped' with 1/4" wide nickel interconnects, 16 welds per side, 32 welds total. Primary cabling is 14g, the balance lead is 20g. We've developed a unique PowerMaster Battery Junction ('PBJ') board with massive current handing capability to provide quick and easy access to the pack in the plane for high rate charging and convenient cell checks. Then, to pull all this together with your field gear, we've produced the finest 14g charger cable system you've ever seen.. custom configured for your charger and our packs.
Finally, each pack gets our superb 3M Mil Spec rubberised shrink finish. ALL our packs are built to fly, survive and excel in the most punishing environments. The packs I build for your RC project are assembled to the same exacting standards we use for DARPA, JPL, the Naval Research Labs and RPV / Robotics applications worldwide. If you want the best for your baby.. it's right here! For a really useful FAQ focusing on the needs of Giant Scale IMAC and 3D flyers considering this technology and some application recommendations for the folks flying 25% through 45% birds just click on this: A123 FAQ INFO!! The A123 Setup Guide.. diagrams, setup, charger and pack connector configurations explained! Click on this: A123 SETUP GUIDE *INFO!! Jan 2019 - The A123 'brand name' has been acquired by LITHIUMWERKS !! .. exactly the same cells, mfg on the same equipment and they retain the same great quality.
PowerMaster Series A123 Packs & Support GearEngineered for Sport & Scale R/C Applications 25 pounds and up.
PowerMaster 2600 Series A123 26650 sized 2 Cell 'Combo Cable' Rx & Ignition Pack 6.6v with Single Lead 14 awg & XT-60i three pin plug These 26650 sized fully custom configured A123 packs are finished with our 'Combo' Single lead 14 awg three wire Power Feed & Balance connection, finished with the Amass XT-60i connector and intended for use with our PowerMaster Battery Junction Board. Each one of these packs are exclusively built to order with custom lead lengths & configured to fit your project.
2600 PowerMaster Series 6.6v 14g 'COMBO' FEED The upgraded PowerMaster 'Combo Feed' Single Lead 2500 Series 26650 Sized 6.6v 2 cell Rx/Ignition Pack with 14 awg cabling and XT-60i high current connector
We compared the PowerMaster single-strapped & 20g JR/Univ 'Combo' pack to our FlightMaster double-strapped & quad welded w/14g XT-60i 'Combo' pack to evaluate the difference in impedance... 71mOhms for the FlightMaster, the reading taken at the 20g JR/Univ connector. Same test on the PowerMaster, taken at the 14g XT-60i connector.. 14mOhms. 
This pack is assembled with matched cells screened for impedance. These then get quad welded with doubled 1/4" nickel straps and then it's configured to withstand a high temperature and high vibration operational environment. It's one of the two key components in this next-gen power delivery and distribution system that's designed to tolerate astonishingly high current loading without a significant drop in voltage while under exceptional flight loads. We're certain this pack and it's companion PowerMaster Battery Junction board will provide the powerful performance your Recievers and Power Expander need to perform the way you expect
$59.95
2600 Series A123 26650 sized 2 Cell 2 Cell 'Conventional' Separate Power & Balance Lead Pack 6.6v These 26650 sized A123 packs are finished with your choice of 14g Power Feed & Connector and comes with a separate 20g JST-XH balance lead. Intended for use with systems requiring a 2 wire power feed to either a Power Expander or with Fail Safe type switches that cannot utilize a three wire connection.
2600 PowerMaster Series 6.6v 14g STANDARD FEED & JST-XH The 'Conventionally' Cabled 2600 Series 26650 Sized 6.6v 2 cell high current/high performance Rx/Ignition Pack replacement for existing installations This configuration (as shown, left) is set up with the 'original type' cabling formats, with a separate 14 awg power feed finished with the connector of your choice. (Deans, EC3/IC3, XT-60, Jeti/MultiPlex etc.) This pack also comes with a separate 20g JST-XH balance connector. With the this 'conventionally cabled' pack you'll need to connect both the power feed and balance lead to the charger for balance charging.
Just like our 'Combo Feed' PowerMaster pack (above) we've 'double strapped'/double welded it. We've also built in high vibration/high temp resistance, making this pack a suitable improved 'upgrade' replacement for packs in existing installations that use this 'standard' connector configuration. And yes, the impedance rating is just 14mOhms.
$64.95
PowerMaster Battery Junction Boards (PBJ), NoBS Battery Checker and PowerMaster Series Combo Charger Cables & Package Deals
PowerMaster Battery Junction NoBS Batteries/Aviation Concepts RC The 'PBJ' Master Disconnect & Charge Port for our PowerMaster Series 'Combo' pack. Here's the 'balance charge in the plane' solution for REAL fast field charging... at up to 10 amps (4C) with our PowerMaster A123's. At just 2.5" square it'll fit easily in most 1/3 or 1/2 scale aircraft and it provides an utterly reliable, dependable way to quickly disconnect your packs from your Power Expander or 'soft/smart' switches AND provide an easily accessible connection point for your battery checker and field charger. It is designed to replace R/C system chargeport switches and all the associated JR/FJ Univ cabling and plugs in your aircrafts primary power system. 
When we compared the impedance value of our standard 'FlightMaster Series Combo Switch' to the PowerMaster PBJ we got another jaw dropping result... the system slide switch: 54mOhms. The PBJ; just 4mOhms. You'll find it partners seamlessly with our PowerMaster Series Combo Feed packs and shoulders huge charge and system current loading without issues. Includes a selectable length Power Expander 14g Jumper Cable, Surface Mount Blocks, templates, hardware & Installation Guide.
$42.95
PBJ Install Guide & Overview
PowerMaster Combo ChargerCablesfor Bench & Field NoBS Batteries The Custom Configured Charger Cables EXCLUSIVELY for our 2600 PowerMaster Series 6.6v packs Developed for the current crop of RC system field & bench chargers and our PowerMaster 'Combo' 2S pack lineup, these custom-configured 14g charger cables will handle all your bench and field fast & balance charging needs. There are two components to the system, a 12" 'Bench' cable that combines the chargers output and modular ports and terminates in an XT-60i plug for checking and charging the pack on the bench -AND- connects to the 'Field' cable; a 30" long 14g 'extension' that gives you access to the packs in the plane for fast field charging at up to 10 amps on our A123 packs.
Bench: $16.95Field: $28.95Both: $41.95**save $5.00
Battery Checker/Cell Balancer NoBS Batteries - iSDT
This clever little device can check and balance up to an 8S pack, has a cell balance feature, a 'gas gauge', and can be the 'charger' for any USB powered device (like your cell phone, for example) when connected to a pack. We set it up for you with our own unique harness making it instantly and easily compatible with our 'PBJ', permitting instant and easy cell checks and cell balancing right at the field, in the plane, for both PowerMaster and FlightMaster 2S packs. 
The NoBS Custom Checker Harness involves an XT-60 & JST-XH setup on the 'Checker Side' as a 'Y' harness and is then terminated with a 20g FJ/JR Univ plug to jack into a FlightMaster Combo Switch chargeport and/or the PowerMaster PBJ 'Cell Check' socket on the board. The 'Y' configuration enables the Checkers USB Charger function and the Balancer feature and also prevents the JST/XH plug from being easily dislodged from the balance port on the checker.
$57.95
2600 Series PowerMaster Combo Package DEAL! The PowerMaster 2600 Series 'Combo' Package... 2500 Pack, PBJ and it's unique PowerMaster Combo Charger Cable Deals.. Get the NoBS 2600 Series A123 pack with either -OR- both the PBJ and the PM Combo Charger Cables and SAVE! A123 PowerMaster 2600 6.6v Pack & PBJ Board; Reg $102..90 (The On-Board Deal).. just $99.95 A123 PowerMaster 2600 Pack, PBJ Board & 14g Combo Charger Cable Set; Reg $144.85 (The Starter Deal).. just $139.95
$99.95$139.95
A123 1200 & 2600 Series HV 3 & 4 Cell Turbine, ECU & AUX Packs , 9.9v - 13.2v All Turbine/ECU A123 Packs are available with Deans, EC3/IC3, XT-60, Jetcat / Multiplex or Anderson Power Pole (sermos) plugs on 14g leads and with JST-XH balance tap.
A123 LiFe 1200 Series PowerMaster 3S - 9.9v Standard Cabling, JST-XH Balance Plug The 'Go-To' Packs you need for High Demand applications. Available with 16g leads & your choice of connector.


Extra-Heavy Duty construction; 1/4" wide double strapped and quad welded cell interconnects and finished in 3M's Polyolefin rubberized heat shink. Comes with the appropriate 20g JST-XH balance connector
1200 3 cell 9.9v 3s Flat or Triangle
$66.95
A123 LiFe 1200 Series PowerMaster 4S - 13.2v Standard Cabling, JST-XH Balance Plug The 'Go-To' Packs you need for High Demand applications. Available with 16g leads & your choice of connector.


Extra-Heavy Duty construction; 1/4" wide double strapped and quad welded cell interconnects and finished in 3M's Polyolefin rubberized heat shink. Comes with the appropriate 22g JST-XH balance connector
1200 4 cell 13.2v 4s Flat or Square
$84.95
A123 LiFe 2600 Series PowerMaster 3S - 9.9.v Standard Cabling, JST-XH Balance Plug The 'Go-To' Packs you need for High Demand applications. Available with 14g leads & your choice of connector. 


Extra-Heavy Duty construction; 1/4" wide double strapped and quad welded cell interconnects and finished in 3M's Polyolefin rubberized heat shink. Comes with the appropriate 22g JST-XH balance connector
2600 3 cell 9.9v 3s Flat or Triangle
$86.95
A123 LiFe 2600 Series PowerMaster 4S - 13.2v Standard Cabling, JST-XH Balance Plug The 'Go-To' Packs you need for High Demand applications. Available with 14g leads & your choice of connector.


Extra-Heavy Duty construction; 1/4" wide double strapped and quad welded cell interconnects and finished in 3M's Polyolefin rubberized heat shink. Comes with the appropriate 22g JST-XH balance connector
2600 4 cell 13.2v 4s Flat or Square
$117.95
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