Li/FeS2 batteries, also known as Lithium Iron Disulfide batteries, offer a non-rechargeable alternative to Zinc Chloride or Alkaline AA and AAA cells commonly used in devices. Unlike most Lithium batteries that deliver 3 volts or higher, Li/FeS2 batteries have a nominal voltage of 1.5v, making them compatible with existing consumer requirements for AA and AAA batteries.
Energizer introduced the AA 1.5v batteries in 1989 and the 1.5v AAA batteries in 2004. Other manufacturers, such as GP Batteries with their GP15LF (AA) and GP24LF (AAA) ranges, also offer their own Li/FeS2 options. These batteries have gained popularity, especially in applications like digital cameras, where they handle moderate to heavy loads, such as using the flash while taking pictures.
We’ll discuss the advantages and disadvantages of Li/FeS2 batteries and what factors to consider when choosing batteries for your devices.
When deciding between Zinc Chloride or Alkaline AA, AAA batteries, and Li/FeS2 batteries, it’s essential to consider the specific requirements of your device:
Please also note that whilst Energizer are the market leader for this chemistry other reputable manufacturers provide equivalent quality options often at a better price because their brands are not as strong in the UK battery market, prepare to dig around for the best price.
|Cell (AA)||Li/FeS2||Alkaline||Zinc Chloride|
|Price (per cell)||£1.90||£0.36||£0.25|
|Energy Density (Wh/Kg)||335||90||55|
|Operating Temperature||-20ºC to +60ºC||0ºC to +60ºC||0ºC to +45ºC|
|Performance at High Temperature||Good||Good||Low|
|Performance at Low Temperature||Good||Low||Low|
|Shelf Life||10 Years+||10 Years||3 Years|