Hi everyone, I have a Raspberry Pi Model B+, I'm very new to Raspberry Pi and learning as i go along,
I have a broken Tablet lying around, most parts in it will probably be too advanced for me to deal with right now,(like a 8.9 inch 1080p samsung panel) or possibly not even worth it
anyways, one thing that is interesting is the battery pack that's in it
it is not very old, and got 2 of them in it,
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I read around and know that generally I would need a regulator to prevent overly powering the pi, but havn't seen a tutorial with something like this
Does anyone know what this is? i put the code on google and i find nothing.
or any suggestions would be greatly appreciated
thanks
Like other batteries
If you open any battery of an old phone, you can see those chips, so I suppose they are to control the amperage and the voltage provided by the battery, and also to control the charge.
Take a look to all that numbers and take note of the followed by V and mA. To fit well with the raspberry i suppose, V must be around 5, which is the voltage recommended for the pi chargers. For a bigger mA, the battery will give you more time of use.
These are all suppositions. I'd try to connect it. I don't think you can transform your pi on a brick by doing that...
This isn't worth doing. As commendable as it is to re-use old parts, a $10 cellphone booster from ebay can power a pi for a few hours per charge and is basically plug-and-play, with charging and regulator circuitry built-in.
Agreed with @Chris J.
Lithium Ion's are dangerous unless you know what you are doing.
You need to have a proper charger for it (ni-cd or ni-mh chargers will not do; they have a consistent voltage output until they are just about dead, compared to li-ions, which have a mostly linear discharge cycle from 4.2V until they reach around 3.6V).
Related
Hi,
So I've built myself a solar powered battery pack for my awesome Tab. Running into a problem though:
I'm using a 3.7V 10.000 mAh lipo battery and a switching regulator to boost the voltage to 5.3V through USB. The regulator is rated at 3A and my batterypack can do a sustained 5A discharge.
I've also built into the female USB the little resistors to "let the Tab know" it's connected to something capable of delivering more than 500Ma USB is specced to deliver (this thread). Problem is even with the resistors i'm only getting about 500mA of charge, much lower than when connected to mains... I'm thinking i'm still not convincing the phone it can pull more current, either that or something is wrong with my booster setup.
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Anybody have any ideas??
Cheers
What sw regulator did u use??
What sw regulator did u use??
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Hi WarlockM,
It was this one: http://www.lightobject.com/DC-to-DC-power-module-step-up-Input-35V28V-Output-535V-Ideal-for-solar-panel-regulator-P498.aspx
I measured the current coming out of the battery whilst charging: 500-600mA... Figured something wasn't right so replaced the whole setup with an all-in-one solution from ebay: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=220712755881&ssPageName=STRK:MEWAX:IT
This one really does a nice job, it charges the phone at 1.5A coming out of the battery so probably a little less going into the phone because of stepup (does require the resistors in USB though). It also smartcharges the lipo batterypack at 800mA straight from USB, or in my case solar panel aswell. What's more it indicates the charge level, so am pretty chuffed.
Will be posting pictures of finished product.
Cheers, Fred
You probably read this somewhere, but this is pretty interesting.
Engineers at Northwestern University have technically accomplished their new lithium-ion battery technology. By poking millions of tiny holes in it, the battery can hold a charge ten times longer and can recharge ten times faster. In the future, these super batteries could dramatically reduce how often we have to recharge our mobile devices. The engineers predict the batteries could potentially get into the consumer market within five years.
Dr. Harold Kung of Northwestern University said they are able to make all of this possible because they discovered how to squeeze more ions into the battery and increase their movement speed. With the new technology, a typical mobile phone would charge to 100 percent in only 15 minutes, yet last for an entire week on that single charge.
Kung doesn’t see long-term use as an issue either, stating “Even after 150 charges, which would be one year or more of operation, the battery is still five times more effective than lithium-ion batteries on the market today.” He and his team are continuing to work on the incomplete battery technology to make further improvements. Meanwhile, let’s start that five-year countdown.
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Interesting. Do you have a link?
hungry81 said:
Interesting. Do you have a link?
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Click to collapse
This was copied from original article.
sounds good, interesting article. I hope it's gonna be out for market soon......
Looks like there is another option out in the market for adding battery to the Note 2. I currently have the Anker 6400mAH extended Battery. However this does pose a good alternative since it adds less in theback and just a tad bit more in the bottom.
Backup Battery
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Has anybody purchased or tried out? I'm curious to hear what people think. I may get it as a test dummy and report back.
Don't have experience with such case batteries, but I have spoken to someone who has. This particular type you mentioned above is very common on Amazon/ebay in 3200/3600/4000 flavors. It makes phone longer because of the bulk at the bottom and you can't access S-pen anymore - a big negative. There is an alternative someone got from ebay - 3200 mAh version: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=350655154588&ssPageName=ADME:X:RTQ:US:1123
It doesn't make the case longer and keeps the bottom open to access s-pen. The down side of this particular case and other battery flip cases is an average of 500mA Input which makes them charge up very slowly, and the same 500mA-700mA Output which charges the phone slowly as well. Also keep in mind output mAh is rated for 5V output while our battery is 3.7V which means down conversion eats into efficiency of the output thus output capacity will be lower.
Hmmmm didn't consider s pen access. Good point. That other option is interesting. I wonder how it affects NFC.
Sent from my Note II
Hello, new here!
Always been stalking around here, decided to finally give in and ask for some help.
(edit; I think this should be relocated to the troubleshooting section, sorry!)
Long story short, I received this tablet because it was broken and no longer turned on.
Ordered a new mainboard and it was still dead.
The battery will not charge with the new mainboard, but will with the old one.
A charged battery will not turn on the old mainboard, but will with the new one.
Here is how I am currently charging it:
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The old board is lying ontop of a plastic bag that is ontop of the new board.
Only the battery connector and USB are attached to the old one.
As you can see, it is drawing about 0.41A.
After a while of charging via the old board, I hookup the new board again.
It works, but it slowly drains back down to zero even while plugged in.
It only draws 0.07A in that state.
I tried a new battery as well, but that didn't help.
I have no idea what could be wrong with it, besides getting another dud mainboard.
About ready to give up, but I have invested so much time into this, it would be a shame to do that.
Any ideas about the mystery of why it isn't charging at any descent rate with the new board?
I have tried countless different chargers, the cable and connectors seem fine.
Shameless bump?
Hello
After 1,5 year of use my phone i cracked my screen. I decided to pay for repair screen but Service center said me that only offer replace to new phone Service Centre charge very high for replacing phone. I got my phone back and I decided to replace the screen and by the way the battery itself.
Screen is not original but work However, I have doubts about battery originality:
Original removed from phone looks like this:
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New replacement:
Flex is different and hard to connect to PCB
Many sellers say that is original from Nokia.
Why is available two types of batteries with different flex cable?
Reason I ask is because my new battery working bad only 7-8 hours without using phone. Accu battery showing 45% oryginal capacity.
Looking at ebay it seems that all batteries manufactured in 2017 have the straight power ribbon cable, and the newer ones have the "S" shaped ribbon cable.
Considering the movement of the power plug it might be that the "S" bend was added as a revision to the newer batteries, as the old design could put some stress during plug/unplug of the battery, and that ribbon is quite stiff, as it's made of thick copper to handle the high current.
So all in all it seems possible that the "S" bend is in fact used in 2018 and newer OEM batteries for Nokia 8, but at the same time it's still highly likely that you got either a fake one, or a used/old one with limited capacity.
Sucks that there are no official manuals available for this, and even no real way of verifying if the battery/part is actually original.