Firefly Working on 2nd Generation Lead Acid Battery; Lightweight, Low Cost Lithium-Ion Alternative

Firefly Battery Grid

Firefly Battery Grid

Firefly, the 6 year old startup battery company that we previously reported on has additional information regarding their second generation advanced lead acid battery.  You can read the original story here  Firefly Develops Breakthrough Lead Acid Battery

After making the first generation battery with lead impregnated foam, they knew there was room for improvement.  The 2nd generation model uses the lead impregnated foam for both the positive and negative grids within the battery.  The original design only replaces the negative grids in a traditional lead acid battery with the advanced foam.

The 2nd generation model offers significant improvements over the first design.  Most importantly, weight is reduced significantly.  For comparison purposes, if you removed the Li-ion pack used in the Chevy Volt and replaced it with the 2nd generation lead acid battery from Firefly, the weight of the pack would only increase by 10%.

Another benefit of the new version is longevity.  The new version would likely last 12 years in most applications where as the first gen. would only last 4 to 5 years and its cycle life is nearly 7 times better than a traditional lead acid battery.

Firefly is seeking funds from the federal government to build a plant that could be in Illinois. 

They foresee their battery as being an option in upcoming hybrid and electric vehicles.  Much as the customer now chooses between a 4 cylinder or a V6, Firefly's battery could be the base option with a more expensive lithium-ion upgrade available. 

They believe that their battery could significantly reduce the base price of many vehicles due to the affordability of their lead impregnated foam design.

Source:  Wards Auto

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Comments (4)
  1. Given the long life of the lead-carbon foam batteries, as compared to Li-Ion, they might even make a Volt battery pack lighter. The Volt Li-Ion battery pack has far more storage capacity than is utilized, to extend its life to 10 years. If long life is inherent in the cells themselves, then a Lead-Carbon foam battery pack might be smaller, lighter and definitely cheaper. Did Firefly take this into account when making their comparison calculations?

  2. It would be nice if they actually sold them. So far they have been doling them out on a trial basis to truck manufacturers. So none of them have actually been put into EVs. I know quite a few EV owners that would love to replace their old FLAs with these babies. But anybody that has actually tried to get them have been shut out. So before they make any great claims as to how great they will be for EVs, they need to actually put them in EVs.

  3. Eletruk hit the nail on the head. EV builders need to test these batteries. Otherwise, FireFly is just talk and a six-year 'startup' in a one-hundred and fifty (150) year-old technology..

  4. Stop telling us about things we cannot have and report on reliable ready to use products,,we need the batterys now ,not years down the road

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