What the future holds for the Fiat 500e?

2016 Fiat 500e in red

 

The Fiat 500e is a great electric car that could easily be better.

 

Now that almost every other electric car got a battery upgrade, it’s time for the Fiat 500e to get its own. Let’s see the possibilities for upgrades.

 

Currently the Fiat 500e has a Bosch battery pack made with 97 Samsung SDI cells, each with 63 Ah capacity. While Fiat says that the battery capacity is 24 kWh, if we do the math the figure we get is 22,9 kWh (97 x 63 Ah x 3,75 V). Nevertheless, the Fiat 500e gets a 87 miles (140 km) EPA range, which is pretty good – for an electric car that has been available since 2013.

The 63 Ah Samsung SDI battery cell’s size is the same of the 94 Ah cells that we find in the BMW i3’s battery pack. Let’s compare these two battery cells.

 

63 Ah Samsung SDI

Capacity: 63 Ah

Voltage: 3,75 V

Watt-hour rating: 236,25 Wh

Mass: 1.880 g

Size: (125 x 173 x 45) mm

 

94 Ah Samsung SDI

Capacity: 94 Ah

Voltage: 3,7 V

Watt-hour rating: 350 Wh

Mass: 2.000 g

Size: (125 x 173 x 45) mm

 

If Fiat decides to replace the 63 Ah cells with the more recent 94 Ah the battery pack will have its capacity increased from 22,9 to 33,95 kWh (48 %). The weight will also increase, but just by 11,64 kg. With a battery capacity increase of 48 % and a insignificant weight increase we could expect the EPA range to increase from 87 to 129 miles (140 to 208 km).

 

Later down the road an even bigger increase is possible to 120 Ah battery cells. However I don’t think that Samsung SDI will make them available before late 2018. The 120 Ah battery cells would give the Fiat 500e an EPA range of roughly 164 miles (264 km), not bad for a cute and small car designed for city driving.

A more reasonable (cost-wise) and probable alternative is the change of the battery cell supplier from Samsung SDI to LG Chem, since the recently available 2017 Chrysler Pacifica Hybrid is already being powered by LG Chem battery cells.

 

A battery upgrade and the addition of DC fast charging capability via CCS connector would make more sense now that Fiat says that will finally introduce an electric city car in Europe. It would be a similar upgrade with what Ford did with the Focus Electric.

 

What do you think? How long will it take for Fiat upgrade its electric car and extend its availability beyond Oregon and California?

 

 

More info:

https://www.unece.org/fileadmin/DAM/trans/danger/publi/adr/Other_notif/13-0085-Bosch_Battery_Systems_F.pdf

http://studiobilar.is/gogn/Fiat/fiat_500e_baeklingur.pdf

More details on the Samsung SDI 94 Ah battery cell

Pedro Lima

More than natural resources, are wasted human resources that bothers me the most. That’s why I’m a strong advocate of a society based on cooperation, not competition, that helps every individual to reach his full potential so that he can contribute back to society. “From each according to his ability, to each according to his needs”.

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10 Responses

  1. Filipe says:

    This car would be an instant hit in Europe, even with the ~24kWh!
    FCA, please wake up 🙂

  2. Martin says:

    🙂 that’s right. And the reason I bought one. It’s to good to sell😉

  3. Jonas Jovial says:

    Forget it in Europe.. it’s just another compliance car only sold in California 8-[

  4. Ralf K says:

    Pedro, I think the battery of Fiat 500e is a 97s3p of 22Ah cells.
    See this reference: http://articles.sae.org/11604/

    291 * 22 Ah * 3,75 V = 24007,5 Wh = 24 kWh.

    For the BMS, it may look like 97 cell groups. But actually I guesss they are 3p of 22Ah (VDA PHEV1 like BMW or VDA PHEV2 like VW). Those smaller cells also would make it easier to fill this rather complicated custom underbody battery pack of 500e.

    It would be nice if all your technical claims on ‘as is’ battery structure would be verified with a disassembled 500e battery pack, otherwise this article would cause more confusion than do anything positive for 500e owners.

    You’re definitely right in one respect however: whatever the cell format is, Fiat could have upgraded the battery capacity already.

  5. Eletruk says:

    Why only go with the 90Ah battery? Why not push for the 120Ah battery?
    http://pushevs.com/2017/05/31/samsung-sdi-completes-ev-battery-plant-construction-hungary/

  1. October 23, 2017

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