Revised Battery Module (FP2-BAT02)


Yes, this could be. I am only a bit into the battery theme which is most related to UPS systems.
And I don´t want to belong to those who had to experience for them self how it is being in the near vicinity of an exploding battery no matter of which type.
That´s an experience I easily can sacrifice on.


I totally agree on this. I would also rather tend to save energy instead of pumping up energy storage systems. But I think this rather complies to end-user products. In concerns of global renewable power solutions we rather need more/better energy storage systems with increasing capacity, mainly to balance the power grid.

The platform is set and now FP can only try to advance on the software side. I have realized it quite done so already. At the time in 2016 as I have received my FP it was nearly impossible for me to keep it up even one day without recharging. This was just in standby hardly using it.
Now even using it regularly still gives me at least one full day.
I am unsure if there is much more room to advance on this for FP.

More recent phone types also have a more advanced hardware, mainly the core as I think has the most influence on performance.
Reading e.g. Qualcomms cpu specs show that power consumption steadily decreases while performance and also kernel quantity increases per successor.
A proper choice here may be essential for the FP3 to come. This cannot be fixed later by software :grinning:

The largest (also in dimensions) battery I held was the 3000mAh of an LG G4 from my girlfriend. Compared to our FP battery it has about 50% more in size. My first thought was…where is the phone, did she only order a battery…:rofl:
But with Android 6 it has no problem to run 3 days on one charge and the supplied charger only takes ~1,5 hours to recharge.


The screen is the biggest consumer so they might as well design a new one (OLED?). My FP2 lasted up to 4 days (but I admit it was a dare: I was barely using it ;))

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4 Days sounds very good!

Oh, yes. This is a good point I have forgotten. The screen is one important component taking a noticable impact.
I don´t know what has been changed now with the new replacement displays. But indeed there is an option to advance here. Since FP3 is in mind already I am unsure if there will be much more focus on new FP2 advancements or rather put more energy into a successor.

Future will show…:confused:

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Well, at least I would be p…d, should they stop support or development for the FP2 as long as a working OS is available. As the FP2 is a design of their own, the problems, that lead to the end of support for FP1 should not reoccur here.
To me, there are two possible sensible ways for a FP3

  • a new additional phone aimed at users with different needs (smaller, mid-class), so FP has two product lines (which of course will mean much more work and stuff needed for support and development.
  • a successor to the FP2, that is sharing genes with the FP2, making it possible to ideally share modules as well. I just don’t know, if that’s realistic with a new phone using a new SOC.
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Correct, that would not be satisfying. Lessons should be learned with each step forward.

Yes, Two product lines would cover more customer desires at least if there are not too many “all I can get” individuals among them. Afaik FP2 does not fully work in some countries depending on the available network. But if someone (businessman/woman) is a globetrotter he/she may not want to keep more than one phone.
To catch more customers a successor should generally cover more network options as many main stream phones do already.
One counterparts would be how much attention someone would give FP2 if a more advanced newer FP3 was right next to it probably also at a lower price.
Of course stocking up staff would be mandatory if moving further into the marked.
But again sales need to cover the costs.

If dimensions change sharing modules between both FP probably won´t work anymore.
I only have changed the camera module so far and did not disassemble the entire phone.
But I do assume the SOC pcb is independent and could be redesigned (mechanically) without necessarily modifying modules as well.
Concerning compatibility there may be a need to also (electrically) redesign module(s).
But there was a redesign of the camera module already without any more to do as simply replacing it (and reconfigurate software settings).
I am not sure if all other modules could be taken over that easy.

Anyway I think the design so far is a very good basis to build up on.
As you write a new FP should meet FP2s best attributes. To keep interest I would expect it to be as potential as my FP2 now but if the marked expects it to be smaller, more slim etc. it should fulfill these expectations as well.
I think for the camera there would not be much to modify, but its software side should be advanced. This also applies for the entire OS which should catch up with the latest Android or derivative.

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right on. Otherwise there is much less point of owning a FairPhone and FP makes one step closer to become like the others. Already the modular concept is under-used since there is almost no choice to upgrade components.

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maybe a naive question… what’s the point of a revised battery if the overall performance is only lose to the original battery??

I’m guessing the point of a revised battery is to keep having a batteries at all since the past supplier stopped producing them.


Such a small difference in specs will not make a difference in daily use.

Sigh …

It might be tricky to figure out, but:


Not significantly, but it is BIGGER.

a slightly different capacity (2440 mAh vs 2420 mAh for FP2-BAT01)

A late reply but you guys replied to everything already :wink: :

  1. Yes the battery is bigger, but 20 milliampere-hour is not a game changer (@urs_lesse is right) ;
  2. As @paulakreuzer rightly guessed, the battery had to be revised because of a change of supplier, not because we tried to make it different;
  3. @BertG and @Patrick1 outlined that already, there is only so much power you can pack in a defined volume. We certainly did not want to change the phone design and hence had to work with the same constraints than for the original battery: we needed a drop-in replacement to keep supporting all Fairphone 2 out there.
  4. @BertG also expressed the fact there are performance variations between batches, and considering that we are looking at a whopping bump of less than 1% nominal capacity, let’s say that one should not expect to notice anything based on that;
  5. If anything, the tuning can make a difference. Let’s see what your feedback is once the batteries are available :wink: .

Thanks guys


Hello all
Is there any recommendation while “samegrading” from FP-BAT-01 to FP-BAT-02 ?
(just received a '02 because my '01 is now aging a lot)
Shall I reset any battery stats counter ? Or is this all automated in software ?
Is there a way to tell ones batt version from the OS, like camera version is displayed in “about phone” ?

A battery reset could help to receive a more precise battery stat according to the #batteryguide as both models don´t have 100% equal specs.

Not afaik. Only the design capacity can be read out by some apps e.g. (accubattery).

If I remember correctly, I think the battery is also displayed in the system settings next to the other “module versions” like you said. Are you on the latest version?

OK. Battery reset from TWRP, right ?

Hm, I´m not sure about TWRP in this concern. The batteryguide is a step-by-step procedure for a battery reset not needing any further software. A OS routine should by this way set up its capacity calculation. It´s a simple generic way.

oops thanks for pointing out, i should update as BAT02 support was only added recently in 18.03.1

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Seems like the pictures are already updated but the description still is for the old battery:

same for other languages

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Thanks for suggesting ! Yeah I did miss some updates indeed (because you cannot use updater app anymore now, if you like to install your own boot and/or recovery.)
Now i do see my batt & cam versions.

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