Develop Bugs

Connecting Batteries in Parallel

HI i have question
can you connect 2 Lithium battery's in parallel doubling the capacity (amp hours) of the battery while maintaining the voltage i was thinking grabbing 2x Touch pro 2 OEM 2150mAh putting them together making a 4300 mAh battery and using an extended battery cover to hide the fat .
I know each battery has a chip protecting it from overcharging
is it possible with Lithium battery's and safe ?

As long as they're both the same voltage and same capacity, I don't see how it could be a problem. However, since the charging circuit is not designed to do that, i don't know what will happen if one of the two batteries gets messed up.

It may not be that simple. Someone started a thread about this not too long ago. Check here:
http://forum.xda-developers.com/showthread.php?t=1074926
I'll tell you the same thing I told the OP of that thread:
Wouldn't it be easier to order an extended battery with the battery cover from eBay for like $7.50 delivered? I wouldn't risk breaking a $500 phone when the fix you are looking for is so cheap and easily available.

2300 mAh battery for S2?

How is this battery for S2?
http://www.ebay.com/itm/New-2300mAh...ccessories&hash=item1c1df8bf62#ht_3138wt_1035

imranmcse said:
How is this battery for S2?
http://www.ebay.com/itm/New-2300mAh...ccessories&hash=item1c1df8bf62#ht_3138wt_1035
Click to expand...
Click to collapse
Could fry your phone as they state that you shouldn't use "inferior charger" lol. They'll blame your broken phone or battery on the charger.

And I bet it is no where near 2300mAh..... So many cheap batteries state they are, but in reality they are no where near the capacity they state.
I bought some cheap Chinese batteries knowing they woiuldn't be as good as the original battery even though they state 1800mAh. And guess what, they are not as high a capacity as the genuine battery, probably closer to 1000mAh of gut feeling. But they are only for emergency use because I do not trust them a lot so try to reduce the risk of them ruining my expensive phone, more for leaking or exploding rather than high voltages (because high voltage is not really possible with the chemical nature of batteries). And I never charge them in the phone in case they explode.
I have read that a lot of these batteries are in fact smaller generic batteries and all they do is put an external case on them to make them fit different phones. I wouldn't be surprised if the one you linked to is the same battery as mine but with a different sticker.

Just a note regarding aftermarket batteries

JUST A HEADS UP for other Galaxy Nexus owners
Cheap Chinese batteries are ALWAYS (well, mostly) overrated.
Then there is a matter of safety.
Li-Ion batteies have protection circuits built in (for overcharge / over discharge protection).
Cheap chinese cells usually DO NOT.
YOU HAVE BEEN WARNED
PS: I GUARANTEE this battery is NOT 2300mah. I'd estimate it at around 1000 - 1500.
Sources: Experience building / flying electric R/C airplanes running on Li-Ion batteries

THS1989 said:
JUST A HEADS UP for other Galaxy Nexus owners
Cheap Chinese batteries are ALWAYS (well, mostly) overrated.
Then there is a matter of safety.
Li-Ion batteies have protection circuits built in (for overcharge / over discharge protection).
Cheap chinese cells usually DO NOT.
YOU HAVE BEEN WARNED
PS: I GUARANTEE this battery is NOT 2300mah. I'd estimate it at around 1000 - 1500.
Sources: Experience building / flying electric R/C airplanes running on Li-Ion batteries
Click to expand...
Click to collapse
I don't think its a great idea going around generalizing things, especially generalizing the 'chinese' regardless if you're right or not. just saying.

Aren't most batteries from China anyway. Hahaha.
I think that the cheap as ones being sold on eBay are cheap because there's much less quality control which often result in heightened prices of genuine electronics we pay for. It's the risk a lot are willing to take considering the price and the blow up rate.
Common knowledge I'd say.
Sent from my Galaxy Nexus using XDA App

Also I believe the batteries on the LTE version are where the NFC chip is, so no Samsung battery = no NFC.

Zerolemon 7000mah battery safety question for gurus

As well as being an avid android user, I have been flying electric RC planes for years.
I have seen very expensive (not made in China) lipo batteries of 2200 mah explode
or create a long flash fire. I would like to ask some of the gurus on this forum what
their thoughts on the safety of the Zerolemon 7000mah battery. I recently received it,
and love the long life and even the size (but not weight) of my GS3 now. I am quite
concerned that the battery is basically 3 regular batteries slapped together in China.
I know enough about lipo batteries that a dropped battery, a battery left in the car, sun,
or hot pocket, or even just an old battery can spontaneously combust. I would have
felt much better if it was actually one battery, but since it is 3 ran together in series,
even if one is faulty or shorts, it will set up an instant fire bomb. From what I have
seen with my RC batteries, you would be severly injured if the phone was on the desk
by you or charging, and if it was in your pocket you would surely be killed or permanantly
injured and disfigured. I don't want to sound like an alarmist, but my vast experience
with lipo batteries has taught me to be very cautious, even storing the large ones.
Every once in a while you will see or hear of an iphone or android phone blow up, and
luckily they were on the passengers car seat or a picnic table, but even with a 2100 mah
battery the damage is devastating. Any serious comments or discussion of this safety
issue would be appreciated.

Frightened me half to death
Sent from my XT890 using xda app-developers app

Yep, now I'm nervous
Sent from my SGH-I747 using Tapatalk 2

Think I'm about to take this battery out now. Lol.
Sent from my SCH-I605 using xda app-developers app

Send it to me Maurr. I'll hold on to it for you.
Sent from my SCH-I535 using Tapatalk 4 Beta

There are tons of them spontaneously bursting into flames. Just Google it, tons and tons of threads made every day to. They narrowed down the fires last summer in Australia to be caused by one last year.
With that being said I'll take yours from you if you don't want it. Oh and all other batteries you own since they all pose the same risk.

I am pretty certain they are run in parallel, and with built in charging circuits I think they are just as safe or dangerous as any other after market battery. I have flown my brushless lipo E-Stater for years and even shorted one of the batteries (only for a few seconds), it swelled but never spontaneously conbusted. My RC boat is lipo too and no probs there, nor with either is my Cox foamies.
Sent from my SPH-L710 using xda premium

Thanks for a sensible reply. And I spoke to an engineer friend and he said they were run in parallel, he said in the rare event one ignites in your pocket you are just as screwed with one than with three. I kind of disagree since setting off 3 2100mah firebombs in your pocket would certainly do more damage than setting off one 2100mah, and the Zerolemon is just 3 2100mah batteries slapped together in parallel, and if one goes off they all do, chain reaction.
My friend has also been flying RC for 30 years and last week was his first lipo fire. We both have had many puffed batteries,
but he was flying a new Parkzone Corsair and it just burst into flames and smoke mid air. He had a very expensive but old
battery in it, but Parkzone is sending him all replacement parts for free, so I suspect they know they had a bad ESC in a
batch of them. Then again it could have just been that old battery, we will never know.

My thought process is this. That rc is using the battery at a much faster rate than the phone. So I think most regular use discharge explosions are flukes. Maybe 15 phones blow up a year but how many phones are being used every day. It's pretty simple; If your phone starts getting extremely hot, take the battery out and let it cool off, don't keep your phone in direct sunlight, and always be mindful of your phone's temperature even in your pocket. As far as explosions while charging always make sure you're using a compatible adapter with the correct voltage and use your phone as little as possible.
Sent from my SAMSUNG-SGH-T999 using Tapatalk 2

Yes the RC does use the battery at a far faster rate, but they are designed for that.
RC batteries and Cell Phones are both dropped all the time, cell phones much more.
This dropping can damage, vibrate, or short the battery and even if not first apparent,
this damaged battery can combust right away or later after more wear. That is what
I am concerned about. The zerolemon is 3 batteries packed together, and heavy, when
you drop your GS3 the battery is the whole back and takes all the damage (unless
dropped on the glass facing). The standard battery is embedded in the phone and is
therefore protected from drops.

hotstocks said:
As well as being an avid android user, I have been flying electric RC planes for years.
I have seen very expensive (not made in China) lipo batteries of 2200 mah explode
or create a long flash fire. I would like to ask some of the gurus on this forum what
their thoughts on the safety of the Zerolemon 7000mah battery. I recently received it,
and love the long life and even the size (but not weight) of my GS3 now. I am quite
concerned that the battery is basically 3 regular batteries slapped together in China.
I know enough about lipo batteries that a dropped battery, a battery left in the car, sun,
or hot pocket, or even just an old battery can spontaneously combust. I would have
felt much better if it was actually one battery, but since it is 3 ran together in series,
even if one is faulty or shorts, it will set up an instant fire bomb. From what I have
seen with my RC batteries, you would be severly injured if the phone was on the desk
by you or charging, and if it was in your pocket you would surely be killed or permanantly
injured and disfigured. I don't want to sound like an alarmist, but my vast experience
with lipo batteries has taught me to be very cautious, even storing the large ones.
Every once in a while you will see or hear of an iphone or android phone blow up, and
luckily they were on the passengers car seat or a picnic table, but even with a 2100 mah
battery the damage is devastating. Any serious comments or discussion of this safety
issue would be appreciated.
Click to expand...
Click to collapse
There is the possibility of ANY battery exploding. First of lets get the terms correct. Per an E-Mail from ZeroLemon the batteries are not Lithium polymer (lipo) they are Lithium Ion. They do have the built in circuits to prevent overcharging and to regulate the charge going in. Now a Phone does not get the abuse that a RC Car gets. The Phone is not charged as fast as the battery for an RC Car. When it come to the 2 RC Car or Phone, Apples and Oranges. I don't see it being a problem.

GTWalling said:
There is the possibility of ANY battery exploding. First of lets get the terms correct. Per an E-Mail from ZeroLemon the batteries are not Lithium polymer (lipo) they are Lithium Ion. They do have the built in circuits to prevent overcharging and to regulate the charge going in. Now a Phone does not get the abuse that a RC Car gets. The Phone is not charged as fast as the battery for an RC Car. When it come to the 2 RC Car or Phone, Apples and Oranges. I don't see it being a problem.
Click to expand...
Click to collapse
I am talking about RC airplanes that do not get any abuse (unless crashed and you throw it away), not RC cars.
Cell phones are dropped all the time.
This dropping can damage, vibrate, or short the battery and even if not first apparent,
this damaged battery can combust right away or later after more wear. That is what
I am concerned about. The zerolemon is 3 batteries packed together, and heavy, when
you drop your GS3 the battery is the whole back and takes all the damage (unless
dropped on the glass facing). The standard battery is embedded in the phone and is
therefore protected from drops.

All batteries will always be at risk to explode. That being said the chances of your phone exploding and seriously injuring or killing you is probably lower than you getting hit by lightening so, you can live in fear or take your very good chances.
If this has scared anyone away from using their battery I'd be more than willing to buy it from you.
Sent from my SAMSUNG-SGH-T999 using Tapatalk 2

Samsung High Capacity Battery

Hey guys! So i posted smth abt Bloated Battery and u guys told me to change it. Surfing the net when i came across this online shop that sells 2480mAh Battery for the Galaxy W (and others) and i wonder whether its real cos' i dont think such small slim battery can that much mAh rite? But also, its made in Japan NOT China so i expect to see "quality" here

check the one in my signature, it's exactly the same
i cannot compare it with stock one because stock one behaves badly after some overheats and experiments
everything is chinese but mine imho is quite nice, got 340 antutu battery score with it
the screenshot in sig is also made using it

dimaka1256 said:
check the one in my signature, it's exactly the same
i cannot compare it with stock one because stock one behaves badly after some overheats and experiments
everything is chinese but mine imho is quite nice, got 340 antutu battery score with it
the screenshot in sig is also made using it
Click to expand...
Click to collapse
So it means, the mAh on the "Gold" one is exactly the same (1500) but behaves somewhat more better than stock?
Sent from my GT-S6500 using xda app-developers app

don't have any equipment to exactly measure the mAh, possibly it's about stock one
feels nice to replace damaged stock one but seems not to be a variant for super upgrade
haven't you seen anyone post antutu battery score here to compare?
or any method to measure the stats?
PS overall i'm satisfied, it's worth it's 7$

TiTAN-O-One said:
Hey guys! So i posted smth abt Bloated Battery and u guys told me to change it. Surfing the net when i came across this online shop that sells 2480mAh Battery for the Galaxy W (and others) and i wonder whether its real cos' i dont think such small slim battery can that much mAh rite? But also, its made in Japan NOT China so i expect to see "quality" here
Click to expand...
Click to collapse
This is the ultracheap golden one I was talking about in the other threat where you asked about freezing your bloated battery.. Having here 2. Each for 5 Euro.
So well. This batteries never ever do have this capacity. Somwhere around stock capacity or a bit less. They do not last that long like a Samsungs battery, so you will have to reacharge it a bit more often than a new Samsung battery. It´s even a bit thinner than a regular 1500mA battery.
However there is one advantage in using it. It´s a LI-Polymer battery. Not a Li-Ion battery. So it doesn´t use an fluid but a polymer and therefore the risks to get it bloated are much less than with a LI-Ion battery. I ran them also really hot and they didn´t get bloated so far.
When this battery would have about the same thickness like the Stock Samsung battery it really would offer more capacity but thus it´s thinner it has just about the same or a bit less and the 2480mAh are just fake.
So well you can use it as an replacement. Just don´t expect it to last longer than a stock battery.

honeyx said:
This is the ultracheap golden one I was talking about in the other threat where you asked about freezing your bloated battery.. Having here 2. Each for 5 Euro.
So well. This batteries never ever do have this capacity. Somwhere around stock capacity or a bit less. They do not last that long like a Samsungs battery, so you will have to reacharge it a bit more often than a new Samsung battery. It´s even a bit thinner than a regular 1500mA battery.
However there is one advantage in using it. It´s a LI-Polymer battery. Not a Li-Ion battery. So it doesn´t use an fluid but a polymer and therefore the risks to get it bloated are much less than with a LI-Ion battery. I ran them also really hot and they didn´t get bloated so far.
When this battery would have about the same thickness like the Stock Samsung battery it really would offer more capacity but thus it´s thinner it has just about the same or a bit less and the 2480mAh are just fake.
So well you can use it as an replacement. Just don´t expect it to last longer than a stock battery.
Click to expand...
Click to collapse
Wait, Li-Polymer? I went researching and they said tht its the most dangerous battery in the world. They say tht its more likely to explode if u overcharge. I don't exactly know whether it true or not but u shld try search on YT abt it...
Sent from my GT-S6500 using xda app-developers app

TiTAN-O-One said:
Wait, Li-Polymer? I went researching and they said tht its the most dangerous battery in the world. They say tht its more likely to explode if u overcharge. I don't exactly know whether it true or not but u shld try search on YT abt it...
Sent from my GT-S6500 using xda app-developers app
Click to expand...
Click to collapse
That´s nonsense. The polymer is a static foil which can´t boil and create gases like the fluid in LI-Ion batteries. Well you can make everything explode. Even a banana by sending a flash with thousands Ampere through it.

honeyx said:
That´s nonsense. The polymer is a static foil which can´t boil and create gases like the fluid in LI-Ion batteries. Well you can make everything explode. Even a banana by sending a flash with thousands Ampere through it.
Click to expand...
Click to collapse
Hhahaa so in other words, Li-Po is less likely to get damages?
Sent from my GT-S6500 using xda app-developers app

TiTAN-O-One said:
Hhahaa so in other words, Li-Po is less likely to get damages?
Sent from my GT-S6500 using xda app-developers app
Click to expand...
Click to collapse
Exactly. It´s an improved Li-Ion. Way easier to manufacture, less risky and even can offer higher capacity density.

honeyx said:
Exactly. It´s an improved Li-Ion. Way easier to manufacture, less risky and even can offer higher capacity density.
Click to expand...
Click to collapse
why did cellphone manufacturers insist of using more expensive li-ion?
as u say it is better n safer, but li-polymer battery has lesser energy output than li-ion battery.

honeyx said:
That´s nonsense. The polymer is a static foil which can´t boil and create gases like the fluid in LI-Ion batteries. Well you can make everything explode. Even a banana by sending a flash with thousands Ampere through it.
Click to expand...
Click to collapse
LOOOOLLLLZ! i like that exploding banana thing!

saintsoh said:
why did cellphone manufacturers insist of using more expensive li-ion?
Click to expand...
Click to collapse
Many cellphone manucafturers already switched to Li-Polymer battries but those who don´t are still having legit contracts with LI-Ion battery manufacturers which they are forced to fullfill. This has nothing to with reality but with making bussiness and telling the customers what they want them to belife.
saintsoh said:
as u say it is better n safer, but li-polymer battery has lesser energy output than li-ion battery.
Click to expand...
Click to collapse
Sorry but there you are wrong.
The difference between them lies in the material used as the separator. Rather than an inert substance with holes covered in electrolyte, the separator is made of a micro-porous polymer covered in an electrolytic gel that also serves as a catalyst that reduces the energy barrier in the chemical reaction between cathode and anode. Therefore, Li-Polymer batteries allow for a slight increase in energy density.
Click to expand...
Click to collapse
Sources:
http://www.allaboutsymbian.com/features/item/15775_How_do_Lithium_batteries_work.php
http://batteryuniversity.com/learn/article/lithium_based_batteries
https://en.wikipedia.org/wiki/Lithium_polymer_battery

google search li-polymer vs li-ion battery, comes up with many links. such as;
http://www.androidauthority.com/lithium-ion-vs-lithium-polymer-whats-the-difference-27608/
http://www.buchmann.ca/article6-page1.asp
Risks and limitations on li-polymer battery:
1) Overcharging a Li-poly battery can cause an explosion or fire.
2) During discharge on load, the load has to be removed as soon as the voltage drops below approximately 3.0 V per cell (used in a series combination), or else the battery will subsequently no longer accept a full charge and may experience problems holding voltage under load. Li-poly batteries can be protected by circuitry that prevents over-charge and deep-discharge.
3) Compared to the lithium-ion battery, Li-poly is less advantageous in terms of life cycle degradation rate.
4) Lithium polymer-specific chargers are required in order to avoid fire and explosion.
5) Explosions can also occur if the battery is short-circuited, as tremendous current passes through the cell in an instant. Radio-control enthusiasts take special precautions to ensure their battery leads are properly connected and insulated. Furthermore fires can occur if the cell or pack is punctured.
6) While charging the lithium polymer batteries, the individual cells in the pack should be charged evenly. For this purpose, the cells are to be charged with special chargers. This entails special care while charging the batteries in addition to incurring expenses on procuring the chargers specific to lithium polymer batteries.

saintsoh said:
google search li-polymer vs li-ion battery, comes up with many links. such as;
http://www.androidauthority.com/lithium-ion-vs-lithium-polymer-whats-the-difference-27608/
http://www.buchmann.ca/article6-page1.asp
Risks and limitations on li-polymer battery:
1) Overcharging a Li-poly battery can cause an explosion or fire.
2) During discharge on load, the load has to be removed as soon as the voltage drops below approximately 3.0 V per cell (used in a series combination), or else the battery will subsequently no longer accept a full charge and may experience problems holding voltage under load. Li-poly batteries can be protected by circuitry that prevents over-charge and deep-discharge.
3) Compared to the lithium-ion battery, Li-poly is less advantageous in terms of life cycle degradation rate.
4) Lithium polymer-specific chargers are required in order to avoid fire and explosion.
5) Explosions can also occur if the battery is short-circuited, as tremendous current passes through the cell in an instant. Radio-control enthusiasts take special precautions to ensure their battery leads are properly connected and insulated. Furthermore fires can occur if the cell or pack is punctured.
6) While charging the lithium polymer batteries, the individual cells in the pack should be charged evenly. For this purpose, the cells are to be charged with special chargers. This entails special care while charging the batteries in addition to incurring expenses on procuring the chargers specific to lithium polymer batteries.
Click to expand...
Click to collapse
Thankyou for the information i did know that.

did u know the batteries use by apple iphone, ipad, itablet and ipod?
they all use li-polymer battery and non-removable, need apple authorized centers to replace battery.

saintsoh said:
google search li-polymer vs li-ion battery, comes up with many links. such as;
http://www.androidauthority.com/lithium-ion-vs-lithium-polymer-whats-the-difference-27608/
http://www.buchmann.ca/article6-page1.asp
Risks and limitations on li-polymer battery:
1) Overcharging a Li-poly battery can cause an explosion or fire.
2) During discharge on load, the load has to be removed as soon as the voltage drops below approximately 3.0 V per cell (used in a series combination), or else the battery will subsequently no longer accept a full charge and may experience problems holding voltage under load. Li-poly batteries can be protected by circuitry that prevents over-charge and deep-discharge.
3) Compared to the lithium-ion battery, Li-poly is less advantageous in terms of life cycle degradation rate.
4) Lithium polymer-specific chargers are required in order to avoid fire and explosion.
5) Explosions can also occur if the battery is short-circuited, as tremendous current passes through the cell in an instant. Radio-control enthusiasts take special precautions to ensure their battery leads are properly connected and insulated. Furthermore fires can occur if the cell or pack is punctured.
6) While charging the lithium polymer batteries, the individual cells in the pack should be charged evenly. For this purpose, the cells are to be charged with special chargers. This entails special care while charging the batteries in addition to incurring expenses on procuring the chargers specific to lithium polymer batteries.
Click to expand...
Click to collapse
The same thing i wondered. Search at YT and they said Li-Po is dangerous
Video Link : http://www.youtube.com/watch?v=-DcpANRFrI4&feature=youtube_gdata_player

TiTAN-O-One said:
Hey guys! So i posted smth abt Bloated Battery and u guys told me to change it. Surfing the net when i came across this online shop that sells 2480mAh Battery for the Galaxy W (and others) and i wonder whether its real cos' i dont think such small slim battery can that much mAh rite? But also, its made in Japan NOT China so i expect to see "quality" here
Click to expand...
Click to collapse
lets return back to the main topic.
it is too cheap compare to oem battery, so dont expect goods specs be accordance to wat it advertised.
it cant be li-polymer battery, too expensive to manufacture.
2480mAh?? do a search buyers claim it to be below 1200mAh.
google search the 2900mAh battery, thickness is double, this is many claim to be the true deal.
china have many rejection parts from corporation companies, their sub-contractors to sub-sub contractors to sub-sub-sub small companies.
many will recycle to gain back some of their loss $$$ on rejections instead of dispose/destroy those parts.

saintsoh said:
lets return back to the main topic.
it is too cheap compare to oem battery, so dont expect goods specs be accordance to wat it advertised.
it cant be li-polymer battery, too expensive to manufacture.
2480mAh?? do a search buyers claim it to be below 1200mAh.
google search the 2900mAh battery, thickness is double, this is many claim to be the true deal.
china have many rejection parts from corporation companies, their sub-contractors to sub-sub contractors to sub-sub-sub small companies.
many will recycle to gain back some of their loss $$$ on rejections instead of dispose/destroy those parts.
Click to expand...
Click to collapse
Its okay really, we can somewhat "compare" with the OEM battery (but since mines bloated ) and "gold" one in an Antutu Benchmark test... Who knows?
Typing using a Mini 2 -.-"

TiTAN-O-One said:
Its okay really, we can somewhat "compare" with the OEM battery (but since mines bloated ) and "gold" one in an Antutu Benchmark test... Who knows?
Typing using a Mini 2 -.-"
Click to expand...
Click to collapse
very easy
someone with stock battery performs the test and compares to my screenshot
anyone can?
Sent from my GT-I8150 using xda premium

saintsoh said:
lets return back to the main topic.
it is too cheap compare to oem battery, so dont expect goods specs be accordance to wat it advertised.
it cant be li-polymer battery, too expensive to manufacture.
2480mAh?? do a search buyers claim it to be below 1200mAh.
google search the 2900mAh battery, thickness is double, this is many claim to be the true deal.
china have many rejection parts from corporation companies, their sub-contractors to sub-sub contractors to sub-sub-sub small companies.
many will recycle to gain back some of their loss $$$ on rejections instead of dispose/destroy those parts.
Click to expand...
Click to collapse
Oh wehhh. All the disadvanteges you are listing up in your previous post are also related to LI-Ion and every other battery.
Like I already said. Overcharging a banana with a flash will make it also explode. A flash hitting your head will also overcharge you. It can make your eyes explode and will boil your blood imediatelly. Why do you think they are bounding the eyes for people who are getting killed on electrical chairs? Because their eyes are exploding when the current is streaming through their body.
The same to short circuit a battery. Even a silly carbon battery will explode under this circumstates. That´s also why most batteries used for phones are having a short circuit protection. Even the old NiCd batteries which were used in the stone old cellphones.
About droping below 3V. This is legit for both. LI-Polymer and LI-Ion. Not only to LI-Polymer.
LI-Polymer batteries are charged the same way like LI-Ion batteries. The source telling it needs an special charger is a guy who is just sharing his opinion without referring to fundamental sources.
The other source is from 2001 and rather outdated when it comes to density but even there the guy says it´s less dangerous to catch fire.
To sum this up it seems like you just are collecting contrary claims like the guy in your first source without being objective just to make this type of battery to appear worse compared to the older LI-Ion batteries. But not telling the full truth to make it appear like LI-Polymer can explode when overcharged but LI-Ion can not. And this is for me bending the truth.
And to be exact. Not Li-Ion battieries began in 1912 but simple non rechargable Lithium batteries like the one used in watches. Rechargable LI-Ion batteries began in the 70´s and Li-Polymer is the further developement of LI-Ion batteries where newer manufacturing processes and developement make it even safer and having a higher density.
So last but not least. It IS a LI-Polymer battery. It has no hard case like Li-Ion batteries require to have to hold the fluid in it. You can bend this battery forth and back like all li-Polymer batteries. On the back side it even says it´s a Li-Polymer battery, but the missing hard case and the bending test are enough evidence for being one.
AND it has been said already many times it´s never ever 2400mAh but somwhere around stock capacity. The is just fake to get better sales.
However for this money there is nothing wrong in buying it as an replacement.