A123 Batteries

A123 Batteries use high-performance Nanophosphate® lithium iron phosphate (LiFePO4) technology to deliver high power and energy density, with excellent safety performance and extensive cycle life.

A123 Battery Cells

a123 batteries 18650

Nanophosphate® APR18650 M1-A

Based on the same  Nanophosphate LiFePO4 technology as A123 Systems’ pioneering ANR26650 cell, the APR18650 is now available as a smaller form factor for design flexibility in commercial and handheld products and appliances.

Nominal voltage: 3.3V – Nominal capacity: 1.1Ah


a123 batteries 26650 cell

Nanophosphate® ANR26650M1-B

The ANR26650M1-B is the next generation of A123 Systems’ pioneering 26650 cylindrical cell, now with greater power and energy density and lower impedance. This versatile lithium ion cell is suitable for a wide variety of applications and system designs. Proven performance in the toughest conditions, combining durability, reliability, and safety, the ANR26650 cell offers an excellent combination of price-performance.

Nominal voltage: 3.3v – Nominal capacity: 2.5Ah


a123 batteries 32113 cell

Nanophosphate® AHR32113M1Ultra-B

Designed for HEV applications using our high power M1Ultra electrode design, A123’s AHR32113 lithium iron phosphate cell is built to deliver high power and long life under the most demanding duty cycles. The AHR32113 delivers consistent power over a wide state of charge (SOC) range resulting in minimal battery pack oversizing and a low cost-per-watt.

Nominal voltage: 3.3v – Nominal capacity: 4.4Ah


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Nanophosphate® AMP20M1HD-A

A123’s AMP20 prismatic pouch cell is built to deliver high energy and power density combined. The AMP20 prismatic cell demonstrates industry-leading abuse tolerance coupled with excellent life performance under the most rigorous duty cycles. The AMP20 delivers high usable energy over a wide state of charge (SOC) range to minimize pack oversizing and offer very low cost per watt-hour.

Nominal voltage: 3.3V  – Nominal capacity: 20Ah


Nanophosphate Advantages

  • High Power – Higher charge and discharge rates for better performance and efficiency
  • Higher Usable Energy – Wide State of Charge range enables greater battery utilisation
  • Excellent Safety – Superior abuse tolerance
  • Extended Cycle Life – Long battery life for both deep and shallow cycling


Nanophosphate is a positive electrode material of remarkable rate capability, critical to high power systems. Our high power products are able to pulse at discharge rates as high as 100C and deliver superior power by weight or volume in a cost effective solution.

With their low impedance and thermally conductive design, A123 high power cells can be continuously discharged at a 35C rate, a marked improvement over other rechargeable battery alternatives, and have consistent power over wide state of charge (SOC) range.


Safety begins with chemistry. A123 Nanophosphate is stable chemically, which provides the foundation for safe systems while meeting the most demanding customer requirements. Multiple layers of protection are employed at the chemistry, cell and system level to achieve an energy storage solution with superior safety and abuse tolerance compared to metal oxide lithium ion chemistries.


A123’s lithium iron phosphate technology delivers exceptional calendar and cycle life. At low rates our cells can deliver thousands of cycles at 100% depth of discharge (DOD), a feat unmatched by most commercial lithium ion cells.

Even when cycled at 10C discharge rates, our cells deliver in excess of 1,000 full DOD cycles. Not only does A123’s technology retain its energy, it also retains its power capability.


A123 batteries have higher usable energy than other lithium ion technologies which enables greater battery utilization. A123’s high usable energy results from the combination of excellent abuse tolerance and calendar life at high state of charge (SOC), as well as excellent power capability at low SOC.

In addition, the technology has excellent deep-discharge cycle life, meaning that you don’t need to protect the battery by cycling it more shallowly. This allows the battery to be used over a wide range of SOC. Deeper cycling and a wider usable SOC range means higher usable energy; more of the battery’s energy can actually be utilised in the application.


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Creasefield are a trusted partner of A123 Systems for the assembly of battery packs. We have access the the right people within A123 to support any situation, and are confident that we can specify or manufacture exactly what you need to enjoy high performing, safe batteries within your equipment.

For custom battery packs designed or manufactured using A123 batteries, just take a look at our custom battery assembly page or project enquiry form. We can design and assemble a battery pack customised to your application with all of your design criteria in mind. Call our engineering team to discuss your requirements on 01460 54800.

For more information, read our A123 Systems company overview or visit A123 Systems online.