Fiat 500e battery replacement starts with getting the 500e replacement battery. Unfortunately it is not easy for several reasons:
The new HV battery was more expensive than the new Fiat 500e 2013-2019 in California.
Fiat does not sell spare parts for HV batteries. Therefore all spare parts you have to find from the aftermarket.
Most Fiats 500e are not badly shattered after the accidents. Making almost every one repairable without major problems. This makes the used Fiat 500e HV batteries extremely hard to find or get.
Several times I had an offer to buy a used Fiat 500e battery with the body (rest of the car) for free 😉
therefore better always try to repair the Fiat 500e HV battery then think about Fiat 500e battery replacement. Sometimes it may take several months to find a Fiat 500e HV battery for sale. the only thing I can give you a hint is to browse through the ads from auction sites.
Fiat 500e battery life
Fiat 500e battery life calculation by a producer, according to Fiat 500e maintenance schedule is 15 years or 240 000 km. In line with these assumptions, the first Fiats 500e from 2013, exceeded the halfway point of life. I drove many examples from 2013 and some of them show a slight degradation of the battery. Some examples of this model have exceeded my wildest expectations and after 7 years of use they show SOH of the battery between 99 and 100%.
I just came back from sunny Portugal, where we worked with the EVolution Service & Battery Center team on a new project. 500e service & EVolutionSBC has teamed up to create something big capacity. Original Fiat 500e Battery price exceeds the wildest expectations. Battery price is bigger than the price of the new car. Equals exactly 162,000 PLN or $42,000. New Fiat 500e in US cost only $34,000. Equipping this car with upgraded – enlarged batteries, will give it a completely new, better life.
We leave more details to yours guess 😉
EVolution Service & Battery Center Portugal
It was a great week of working on Fiat 500e, with such a team, it was pure pleasure! EVolution Service & Battery Center is a team of great and experienced specialists.
Probably for the first time in my life I was in a place where I never once heard that we couldn’t do something. When something did not go one way and I gave crazy ideas for solution, always one of them just opened the drawer, pulled out the cable or PCB and said I can do it.
EVolution Service & Battery Center Portugal specialize in conversions for electrics of all kinds of vehicles. Their designs such as the Audi TT with the Tesla engine and the HV Battery they built really impress.
Lithium Battery bests practices by Peter Wolf. How to prevent Li-Ion battery for loosing SOH and ageing? How to not visitHV Battery service. Sorry for the mistakes, I will work on it
I have started my adventure with lithium batteries about 20 years ago, as a RC modeler. Lithium batteries that we used in flying models, unlike laptop batteries, were designed for maximum current, delivered in a very short time. Thanks to this I gained experience with the most well-fed Lithium batteries in the world. Batteries that I use for acrobatic or racing models are able to temporarily spend up to 100 times more current than the nominal capacity. What does it mean? For example, use a small battery used in 250 class acrobatic drones with a capacity of 1300mAh on 14.8V what means 4 cells per 3.7V nominal.
Next to the capacity, a thick 75C inscription appears, marked with a black background. This means that, we can temporarily pull the current ,75 times larger than its capacity. That is 75 * 1300mA = 97 500 mA. Almost 98Amps on 15V what gives 1470W from a battery not much bigger than a matchbox.
100% SOC is actually 100% capacity of our battery and 0% is 0%
In your mobile phone for 99,99% it is. that’s why a mobile phone battery lasts only for two years. 100% for 4.2V(or even higher to 4.35V) and 0% for 3V.
In most EV vehicles, the original cell capacity is degreed for longer battery life. And for example Fiat 500e’s 100% SOC is equal to ~4110mV/cell and 0% is around ~ 3300mV/cell
Lithium Battery bests practices important notice: Lithium battery haven’t ‘memory effect’. There is no sense to discharge them to 0% and then full charge.
Charge Voltage Limit and Discharge cycles
Charge Voltage Limit is also very important. Every reduction of 0.1V in max cell/voltage double the battery cycles. Every 0.07V (70mV) drops the usable capacity by ~10%
Charge level V/cell
Discharge cycles
Stored Energy
4.25
200 – 350
105-110%
4.20
300 – 500
100%
4.15
400 – 700
90% to 95%
4.10
600 – 1000
85% to 90%
4.05
850 – 1500
80% to 85%
4.00
1200 – 2000
70% to 75%
3.90
2,400 – 4000
65%
3.80
4000 >
55%
Deeper discharge, shorter life.
Deeper discharge (100% DoD equals to full cycle) = shorter battery life – less battery cycles. Operating the battery in mid-state-of-charge would have beast results.
DoD (Depth of discharge)
Baterry cycles NiCd
Battery cycles LiPO
100% DoD
~300
~600
80% DoD
~400
~900
60% DoD
~600
~1500
40% DoD
~1000
~3000
20% DoD
~2000
~9000
10% DoD
~6000
~15000
Lithium battery charging and balancing
No Lithium battery archive ‘capacity memory effect’ therefore it is not necessary to always discharge to zero and charge to 100%. and it will definitely be better if we don’t charge like that. If you do not use 100% daily, consider setting a charging schedule so as not to recharge the battery every day to 100%. For Lithium Battery bests practices try to keep the limits from 20 to 80% State-of-Charge. You don’t have to worry about the battery being unbalanced. Discharging to zero and charging to 100% has nothing to do with balancing the battery. Fiat 500e balances the HV package whenever it is needed, even during sleep cycle
Fiat 500e HV battery balance data.
Lithium batteries storage
Lithium batteries differ from each other, the additives used, which every manufacturer keeps secret… Lithum Polimer batteries, achieve their incredible performance at the expense of stability and explosive nature. These batteries, whose purpose is to discharge from 100% to zero in 3-4 minutes are extremely sensitive to too low charge or high charge. The only way to store these batteries, as well as all other Lithium batteries, is to charge them to the “magic” STORAGE level of 3.75V – 3.82V per cell (about 50%SOC)
Proper prepared to store Lithium batteries can be stored up to 5 years, almost without degrading the battery SOH (State-of-Health) Remember, or notice the next time, how much charge your new mobile phone has taken straight out of the box?
For any Lithium Battery bests practices, remember, no lithium batteries like to be 0% or 100% too long. And the closer to the center (SOC: 45-50%) the better. Depending on the additives used for the chemical composition and battery pack build. Lithium batteries can only be more or less resistant to too high or too low SOC.
Putting battery in to Storage State requires a special charging mode. it is mainly used for batteries used from time to time such as drones/RC batteris, which we charge to 4.2V / cell just before use.
