Re: Spare battery for Jolla
 

I got hold of an original HTC Desire 310 battery. It seems to work just fine, but when I ran the speaker test in the CSD app, it produced a sound for about 0,5s, and then silence. Reboot, power cycle, nothing mattered, not a single beep was produced by the speaker. I really though the speaker was now broken.

Well, you've guessed it, swapping the battery for the original Jolla, and voila, the speaker works perfectly again. Swapping again, with the HTC battery: no sound.

WHY? HOW?

No seriously, what can cause this? Even with a charger connected it doesn't work, so it doesn't seem to be a shortage of available power. (The battery isn't new)

Re: Spare battery for Jolla
 

Seems that German Company now made a spare battery for Jolla 1
Check it out
http://www.jubatec.net/akkus/handyak...p-1301/a-1102/

German quality with 36 month garanty

Re: Spare battery for Jolla
 

As my polarcell started to loose power I ordered one of these - fits perfect the label says for Jolla 1 and HTC Desire - and on the battery is printed made in China - it looks exactly like the polarcell one so I would say that it's the same battery just with another label ...
But it works as expected ... the polarcell lasted one year before it lost power ... we'll see ...

Re: Spare battery for Jolla
 

Hi,
On Polish auction service Allegro it's possible to buy original battery (it looks like original) for Jolla JP-1301. It's cheap, it costs 5EUR.
http://allegro.pl/nowa-oryginalna-ba...649316614.html
Seller has 47 batteries.

If someone need spare battery and need help (site is in Polish or need ship abroad) I can help with that.
I have to admit I don't know the seller so I can't guarantee it's original. One Polish guy have bought it and said it looks and work like original.
https://together.jolla.com/question/...tery-for-sale/

Re: Spare battery for Jolla
 

First update
After one month of use I'm still satisfied with this battery - the uptime is a bit longer as with the polarcell one (subjective) and no sudden reboots so far (but that has been the same when I replaced the one year old original with the Polarcell a year ago ... after 6 months the reboots reappeared first every few weeks and after 11 months nearly every second day)
Anyway - one battery per year seems still ok to me at this price level ...

Re: Spare battery for Jolla
 

Yesterday I received battery from auction I mentioned in post http://talk.maemo.org/showpost.php?p...&postcount=164
I charged it, measure voltage and it looks like it's original one.

Re: Spare battery for Jolla
 

atlochowski was kind enough to purchase one of these batteries for me, test it, and send it to me in The Netherlands. I thought a public Thank You! was the least I could do.

Thank You!
Rob

Re: Spare battery for Jolla
 

But they don't send outside Poland, right?

Re: Spare battery for Jolla
 

Hi guys,

I am using Gionee M2 battery for my intex Aqua fish. The only issue I am seeing is the inaccurate battery percentage. For instance, it will be correct at 60% and then suddenly shift to 16% with same voltage. If I remove the middle pin (do not connect the wire), the phone works with charge percent constantly at 50% and phone shwoing errors about no charging but it charges !!!

Does anyone know what is the last operating voltage for Aqua fish, like at what voltage it is supposed to be shutdown, so that I can a run a script on voltage and not connect middle pin ???

Re: Spare battery for Jolla
 

No idea but...

If you are so keen on writing scripts, why don't you write another one. A cron job to log the current voltage every 5 minutes. Then you will know what the last voltage was before the log stopped.

Re: Spare battery for Jolla
 

I think they do send outside Poland. I actually think not just Poland but probably Europe as well.

Re: Spare battery for Jolla
 

Good point.

For minimum voltage, i found it to be 3.4V written in file "voltage_min..". But I have seen it go down till 3.2V.

And Battery notification and shutdown seems to work on battery percentage than voltage. If I get 2% battery percent at 3.9v, it will still shutdown.

PS: The problem was due to loose connection between middle pins.

Re: Spare battery for Jolla
 

If not, I can help with that.

Re: Spare battery for Jolla
 

Encountered a new problem.

Loose connections is one of the reasons for very frequently varying battery percentages and "recharge battery" notifications.

The other problem with the connected middle pins is : Charging.
I do not understand why, but it gets charged at 3.8V to 3.9V. And discharged at 3.5V. + sudden "voltage percent" drop to 2% at 3.6-3.7V itself. (Good part about drop, it charges at 2A)

As asked, I logged the battery level, when not connected. Under heavy load, it has dropeed till 3.0V and recovered back to 3.3-3.5V, (sometimes consistently on 3.3V). Plus, though it says "not charging", I have been able to charge it 4.1V (I had to keep track of it manually).

Is consistent battery usage at 3.3V bad for battery ?
Do all batteries drop to very low voltages under load ?
Is it bad to charge it to 4.2V? ( it takes about 1.5-2 hours extra after 4.0V)

PS: Could not log it, but I think phone shut off after touching 2.8-9V under heavy load.

Re: Spare battery for Jolla
 

I tried to buy it but they send me an email to ask me an address in Poland :(

Re: Spare battery for Jolla
 

Did you get a solution? Well if not, someone on the comment section seems to be ready to help...my faith in Humanity has been restored. Send him a message mate!

Re: Spare battery for Jolla
 

Yes, I've already done, thank you for your interest!!

Re: Spare battery for Jolla
 

Anytime mate. Glad that someone came through!

Re: Spare battery for Jolla
 

Tomorrow I will receive batteries for carmenluci and will send them to him.

Re: Spare battery for Jolla
 

And I've received them last week ;)

Re: Spare battery for Jolla
 

Another one here satisfied with Jubatec Jolla1 battery. Great performance.

Re: Spare battery for Jolla
 

https://www.amazon.co.uk/PATONA-Batt...ds=jolla+phone

Im ok with this ?

Re: Spare battery for Jolla
 

Probably. I have been using a Desire 310 battery for years after my original Jolla battery puffed up and refused to hold charge. They are a 1:1 replacement.