Re: 1930 mah battery...
 

External Charger

that's the euro version (and US).

Here's a battery:

Singapur Battery (OEM)

That ships from singapur.

This one from china:
Hong Kong (OEM) Battery

and then this one from the UK (for more centralized shipping, but more expensive (A LOT, rather than 60 cents for the chinese "original" one, but it does look legit.)

UK (OEM) Battery

I'm probably going to order the charger & the battery from the UK. They're not that expensive for OEM. But for $hits and Giggles I'm going to order the 60 cent one and see if it's REALLY an OEM one with the correct hologram.

Re: 1930 mah battery...
 

I'm sure many people use those in other countries, i've seen it on documentaries and such. Imagine buying a new phone, and having to charge it like that for 8 hours.... Call Martha Stewart, and tell her you've got your "Charging your phone while keeping in shape" video all planned out :D haha.

Have you guys seen 30 Rock? The episode where Tracy tries to sell a machine that replaces bread with 2 other slabs of meat? Well, in that episode they made a comical reference to Whoopy and said "Working Out with Whoopi" and Whoopi G was working out. It was hilarious.

http://www.youtube.com/watch?v=Ff9uYuh3XsQ

LINK :D

Re: 1930 mah battery...
 

It's the other way around.
Bigger units have the space for smarter chips onboard the battery module, especially in laptop battery designs you need balancing chips to make sure no individual cells are getting out of sync with the others.

The NITs have no ICs in the batteries. There's mechanical thermal and overcurrent protection in the battery. (often missing or defective on third party batteries since it's a cost saving the consumer wont notice with their eyes until it all goes boom). The charging logic is in the tablet. There is a resistor in the battery for signaling the design capacity. The battery meter software uses that information for estimating remaining capacity and presenting battery low warning. It seems to ultimately make shutdown decision based on voltage though, not on calculated remaining capacity. The same applies when charging, it charges the battery to full (except if you use a "Special" charger, then it takes it up to slightly less than full and holds it there). Full is detected by charge current and battery voltage. It's essentially the only sensible way of charging Li-Ion (and Li-Polymer).

Re: 1930 mah battery...
 

In the comments section of this article, someone claims that he tried this 1930 mAh battery and it worked fine for him.

Re: 1930 mah battery...
 

But how do we know that's not just the seller of that battery posting the comment?

Re: 1930 mah battery...
 

True, we don't know. I was hoping that someone here already tried it.

Re: 1930 mah battery...
 

couldnt it be that nokia doesnt make their batteries more powerfull because of safety measurements? and companies like these have different guidelines for this that are not as tight ?

In a short while we will have batteries with nano tubes that can be recharged in only 2 minutes with a higher capacity and not losing power when not used. i read this

A new manufacturing method for lithium-ion batteries could lead to smaller, lighter batteries that can be charged in just seconds.

Batteries that discharge just as quickly would be useful for electric and hybrid cars, where a quick jolt of charge is needed for acceleration.

The approach only requires simple changes to the production process of a well-known material.

The new research is reported in the scientific journal Nature.

Because of the electronic punch that they pack, gram for gram, lithium-ion batteries are the most common rechargeable batteries found in consumer electronics, such as laptops.

However, they take a long time to charge; researchers have assumed until now that there was a speed limit on the lithium ions and electrons that pass through the batteries to form an electrochemical circuit.

Tiny holes

Gerbrand Ceder, at the Massachusetts Institute of Technology (MIT), US, and his colleagues used a computer simulation to model the movements of ions and electrons in a variant of the standard lithium material known as lithium iron phosphate.

The simulation indicated that ions were moving at great speed.

"If transport of the lithium ions was so fast, something else had to be the problem," Professor Ceder said.

That problem turned out to be the way ions passed through the material.

They pass through minuscule tunnels, whose entrances are present at the surface of the material.

However, the team discovered that to get into these channels, the ions had to be positioned directly in front of the tunnel entrances - if they were not, they could not get through.

The solution, Ceder discovered, was to engineer the material such that it has a so-called "beltway" that guides the ions towards the tunnel entrances.

Traffic management

A prototype battery made using the new technique could be charged in less than 20 seconds - in comparison to six minutes with an untreated sample of the material.

Most commercial batteries use a material made up of lithium and cobalt, but lithium iron phosphate does not suffer from overheating - something that has affected laptop and mp3 player batteries in a number of incidents.

Even though it is cheap, lithium iron phosphate has until now received little attention because lithium cobalt batteries can store slightly more charge for a given weight.

However, the researchers found that their new material does not lose its capacity to charge over time in the way that standard lithium ion batteries do.

That means that the excess material put into standard batteries to compensate for this loss over time is not necessary, leading to smaller, lighter batteries with phenomenal charging rates.

What is more, because there are relatively few changes to the standard manufacturing process, Professor Ceder believes the new battery material could make it to market within two to three years.
http://news.bbc.co.uk/1/hi/sci/tech/7938001.stm

Re: 1930 mah battery...
 

Must be the seller!.....you must always look for the negative feedback of the seller on ebay....it doesn`t look good

Re: 1930 mah battery...
 

It's been my experience that next quarter actually means next year, three years to market means closer to ten years, and within twenty years means never.

Re: 1930 mah battery...
 

I dunno. He has a 99.6% percentage, which is not bad. The negative feedback is really terrible (as you said), but there are very much positive ones.
Perhaps I'll try this out somewhen.

Re: 1930 mah battery...
 

Not really. There are currently no lithium-ion or lithium-polymer technology available outside of labs that significantly increases power density. You should only expect normal variation, i.e. 10% or so. It's extremely unlikely that someone would be able to make a 1930mAh battery within the same volume as a 1320mAh battery. [We've been over this several times already btw.. ]
If you want more power you'll have to get one of those that come with a replacement back cover, i.e. a thicker battery (like those Mugens make).

Re: 1930 mah battery...
 

Alternatively, a company could come up with an 'internal casing' which removes the space for the stylus and some dead space so you can fit a 1500mAh battery in their.

If you put the E71 and N900 battery side by side, you'll see it could definitely squeeze in the n900 if the deadspace was removed.

Re: 1930 mah battery...
 

mugen power..they are really good...they had a review on tech crunch if i remember

Re: 1930 mah battery...
 

i posted this in another thread... but though id put it here too, its most likely a porper fake!...



OK.... so i though sod it, i may as well do it now.....

Check the following out.... in all the pics with 3 batteries, the middle one is FAKE.... so i dismantled it....

http://smg.photobucket.com/albums/v1...marauder/BL5J/

Most worringly is the fact it says its 1320mah on the label, AND in the software (lshal grep).... but inside it says 850mah!!!

most of it was stuck together with sticky foam / glue...

and you can also see what i mean about the hologram colours.

the shape of the face is slightly different....

i also made sure i used 2 genuine batteries from different countries... one came with the N900 itself, and the other from the link i provided earlier.. text does differ between the two genuine ones, so that cant be used to confirm a fake.

hope this helps some peeps out...

®

Re: 1930 mah battery...
 

Here is youir answer on the 1930Mah superbattery... Absolute fake. You can order them in batches of hundreds from China via Alibaba. They have BL-5C, BL-6C, BL-4C, BP-6M, so on... Amazingly they are ALL 1930Mah and they are all Made in Japan but Manufactured in China. :D Hit the link below:

http://bestmpa.en.alibaba.com/produc...ile_Phone.html

Re: 1930 mah battery...
 

I'm sure you can get them to slap a "3720mAh nanotube technology" label on it if you ask for it :)

Re: 1930 mah battery...
 

i have bought this battery, its not so powerful as the original battery.
lshal says it has 1200mAh

Re: 1930 mah battery...
 

Since we are on the roll with fake battery capacities, I thought that I would mention Mugen's high capacity batteries of same size which belong in this thread as well.

Someone earlier mentioned that they had good experiences with them. In my case I purchased two 1800Mah Mugen batteries for my E72 as opposed to the OEM 1500Mah. Those were big time fakes as well. The performance was beyond obviously worse than the OEM.

Re: 1930 mah battery...
 

Looks like i'll be getting a second genuine one then along with a desktop charger.

Good work mr bridger on the dismantle and proving its a fake.

Re: 1930 mah battery...
 

I ordered THIS the other day and it came this morning.

Looking at Mr Bridger's pictures above, the battery is actually genuine. The charger is chinese and made by yiboyuan, but seems to be ok. I have put it on charge now and will report back once I know the usage of it.

Re: 1930 mah battery...
 

man from boltons no responce = house burned down? i swear i smelt burning here in manchester a couple days ago :D

Re: 1930 mah battery...
 

so guys do u suggest this battery or not??

Re: 1930 mah battery...
 

Luckly no fires yet! lol

I used this second battery twice now and it seems very similar to the original. I will do a benchmark test by fully charging them and playing a video til it runs out and see how the times differ

Re: 1930 mah battery...
 

If you are referring to the 1930Mah super battery, I would say no. In the best case it would as good as the Nokia genuine. Then you might as well buy genuine and know that it will really be 1320Mah.

I was considering asking the chineese manufacturer if they can rebrand it for me to Triple Platinum(Gold is for loosers) and make it state 31,930Mah, nuclear powered. Maybe that would sell better? Perhaps for $15? :)

Re: 1930 mah battery...
 

hmm to be honest i think this whole battery market is a mess.
when i started with AA batteries you could buy rechargeable ones with 650mAh now (nearly 20 year later) you can get 3000mAh batteries. But the technologie changed from NiCd to NiFe and NiMH to nowadays LSD NiMH batteries.
so with new technologies and some time these amount of increase is understandable.

but if it comes to Li-Ion or LiPoly then i think differently. The higher capacities had been quite expensive at the beginning so companies used to sell 750mAh, 850mAh or even 1000mAh batteries without letting the customers know what they get. They simply used their own format and put their own label, with a strange name, on the battery.
especially Nokia is such a company. they produce several different mobiles with different battery types. and after a while they switch back to old known types. but now they can't just rename them and sell them with more mAh. the new batteries could be used in the old devices as well.
so they still sell the old types with the old specs, even if there are batteries with the same diameter and more mAh.

if i'm wrong show me the truth, but so far that is what i think. and i can't blame Nokia for it. if i had old products on stock i would try to sell them, as well.

on the other hand. i would always compare batteries to similar ones.
my Huawei e5830 has a huawei battery with similar diameters but an capacity of 1500mAh. so i would say that there is a possibility for 1500mAh batteries that could be used in the N900... but more then that.... nope not at the moment.

Re: 1930 mah battery...
 

BL-5C which is probably the oldest Nokia battery still in use, has grown in capacity from 750 to 1000 over 10 or so years, iirc..

by the way, there are no 3000mAh AA nimh batteries, they're all lying.

Re: 1930 mah battery...
 

If you have installed BatteryGraph earlier, you could check if the chart changes between the original and the new battery, like here. I think only objective easy way, if you look at the graph in 21 days window. The hard way would be to use powertop-program and alalyze after few full cycles.

Re: 1930 mah battery...
 

@zimon does the batterygrapher have a daemon like battery-eye?

Re: 1930 mah battery...
 

Hi
I bought one:

http://cgi.ebay.co.uk/ws/eBayISAPI.d...=STRK:MEWAX:IT

And first day using it. So far, its on 79% after 6 hrs, and thats with checking emails and about 40 mins of usings panucci podcast player. I am also running the n900 overclocked to 900.

Re: 1930 mah battery...
 

mate can you use that battery measure app and see what the results are?

do a full charge and make some calls, say 20mins, run nokia maps, 20mins, surf 20mins. make some more calls, check emails, use wifi and 3G

if this is better then nokia one and actually last longer then i would get one!

cheers

Re: 1930 mah battery...
 

If you observe the battery it says "made in japan". Usually products made there are top notch. The stock one you get is probably made in china (even if the device is korean). I'd really like to get one of these now :)
________
NEW MEXICO DISPENSARIES

Re: 1930 mah battery...
 

if it's good one, i'll order it asap ! :)

Re: 1930 mah battery...
 

Hows the battery life so far?

Re: 1930 mah battery...
 

I never even thought about getting new non Nokia battery, but for a £10 i could be interested.... let us know if N900 explodes ;)

Re: 1930 mah battery...
 

Read the feedback for the seller in regards to the battery. Search for "GOLD"

Why do you want to be the "next fool"

http://feedback.ebay.com.my/ws/eBayI...ve&interval=30


Battery DON'T WORK PROPERLY, cheap REPLICA, don't fit well, don't last long

Fake item, TOTALLY WASTE OF MONEY!!! (battery benchmark result = 1200-1230 mAh)

Item disappointed me, battery holds charge only 1 day, it's not a real 1900mAh

didn't hold charge anywhere near as much as genuine battery, say 75% of it.

Re: 1930 mah battery...
 

Errrmmm don't want to support a item I haven't tested myself, but that is 2 bad reports of the BL-5J out of 31 bad reports. I'm not going to trawl the positive reviews to see how many are for the item in question, but I think you should try to be a bit more unbiased when posting such a warning!

*Edit*
Ah I read your post properly, and I guess you were trying to warn people away from your bad experience!

Re: 1930 mah battery...
 

i have this battery when it is fully charged it's 1230mah and no 1900 its the same as the original batterij I dont see a difference between battery time. so the 1900mah is fake.

Re: 1930 mah battery...
 

I bought such a " gold battery " for my N95 8gb and it's terrible lol

Re: 1930 mah battery...
 

Doh that is a shame. For 10 nuggets it still isn't bad, as long as it has a decent amount of recharge cycles left and doesn't explode!

Re: 1930 mah battery...
 

I'd like to point out that the values reported by hal-device bme, battery-eye, batterygraph and similar are all based on what the battery says, not the actual capacity of the battery.

With the original nokia battery, this matches pretty well with the actual battery.

The way you notice if it's less than reported, is for example if it suddenly drops from 30% to 5% very rapidly...

Currently the best way to test the battery capacity is just to do some repeatable and consistent test. Such as uninterrupted mp3 playback with the device offline and screen off, and timing that. Or a movie on loop.

I'm working on talking directly to a battery "fuel gauge" chip in the N900, which has the ability, with some post-processing, to accurately measure the amount of energy going in and out of the battery, and thus benchmark it nicely.