During charging from a powerbank charging level suddenly jumped to 100%. I disconnected the powerbank then the battery level drops to 84%. After that battery allways charge to 100% within 20 minutes from 0%. In ampere app it shows 5000 mah as charging ampere but my charger is 2 amp. Has anybody experienced this behavior of battery. Here is some screenshots attached
Is it due to battery or defective charging ic in motherboard?
Related
Does anybody experience the battery that came with the unit to unusually heat up while charging on the charger (direct plug, not via cradle)?
I've had mine for 2 months and I usually charge when the battery goes to 50%.
Also, the battery used to register 4:00+ on the GPRS Monitor program, nowadays it just registers 3:00+ on 100%
Battery Specs:
ModelH17B
Rating: 3.7VDC 1200mAh
Rechargeable Li-Ion Polymer
anyone knows? may be the stock charger won't work & will cut off after charging to ~1490mah? I left mine charging for 12hrs & it appears to be only charging during the 1st couple of hours... then the heat in battery is lost = no charging anymore
thx in advance
i do no the exact issue but think that u need a charger of higer current rating to charge that battery.
I recently ran an app called Ampere and it says my battery is charging at 3.962 volts at 1030 M.A. Shouldn't it charge around 2000 M.A.? Was wondering if the app is accurate or what are some of your charge rates
Using the Oem charger and cable
My phone charges (while off) from completely dead to fully charged in about an hour and 15 minutes.
Something is wrong with your cable/charger. The official fast charger will quickly charge to about 85% then trickle charge afterwards to 100%
ihateu said:
I recently ran an app called Ampere and it says my battery is charging at 3.962 volts at 1030 M.A. Shouldn't it charge around 2000 M.A.? Was wondering if the app is accurate or what are some of your charge rates
Using the Oem charger and cable
Click to expand...
Click to collapse
The maximum amperage is determined by which charger you are using, what charging mode you are in, and how full the battery is.
If you are using the Note 4 OEM charger with fast charge capability, take a close look at it. You'll find that in fast charge mode, the maximum amperage is 1.67 A, not 2 A. So, 2 A isn't even possible in a properly functioning OEM charger in fast charge mode.
You will also see that, with fast charge mode turned off, the maximum amperage is 2.0.
Confused? Many are, because we have become used to the notion that, in order to increase charging speed, the amperage needs to be increased. And that is true, so long as the voltage remains the same.
But, when you look closely at the OEM charger, you'll notice that in fast mode, the voltage is 9 V. In regular charge mode, it is 5 V. So, the charger achieves faster charging by increasing voltage, not amperage. Why does this work?
Math.
Power (in watts) = Amperage x Voltage.
In regular charge mode, 5V x 2A = 10 watts of power to the battery. Not bad.
But, in fast charge mode, it's 9V x 1.67A = 15.03 watts, a 50% increase in power to the battery.
Why your battery is pulling 1.03A @ 3.962V is not really clear without more information. As mentioned previously, there are various reasons for your scenario, but in no case can you achieve 2A input to the phone when in fast charge mode.
Try discharging your battery to, say, 20%. Then, look at your numbers again. You'll discover that, as the battery's charge increases, the amperage will decrease. 4V and a little over 1A is what I get when my battery is about 75% full, and it decreases rapidly from there.
Hi, so I'm having problems with my phones battery when charging. The phone charges to 100% in like 20 minutes, but when I disconnect it, the percentage drops to the actual percentage, i.e. 40%. This happens both with the phone turned on and with the phone turned off. And its easier to notice this when using the turbo charger.
I decided to check the charger output with Ampere and it tells me every charger I plug in delivers 5 Amps, which is impossible, as the Turbo charger has a max of 3 Amps and the other chargers I used where lower than 1 Amp.
If it helps, I'm on Stock Oreo, not rooted, and locked bootloader.
Is there any solution to this? I tried completely draining the battery and charging it fully, and it still happens.
How long it is supposed to take to fully charge it with 25W charger?
Are the first times you charge it slower to reach full charge?
The time will vary. Battery capacity, discharge state at start of charge and the battery temperature throughout the charge cycle.
Charging from 0-100% stresses the battery (especially with fast charging) and shouldn't be commonly practiced.
Battery start charge temperature should be at least 72F, 82F is ideal. Cool it if it exceeds 99F while charging. Charging is a electrochemical reaction and some heat is needed to avoid Li plating.
Never attempt to charge an Li near freezing temperatures
Li's thrive on frequent partial charge cycling. 40-80% is a good range.
Avoid going below 20% or over 90% except occasionally for best lifespan.
High temperatures and high cell voltage are Li's biggest lifespan risks. Avoid running the phone when the battery is hot (>102F) or provide cooling. Keep it out of direct sunlight especially when charging.
Store Li's in a cool, dry place with a 50-70%charge, not 100%!
GSMArena:
" We tested the Galaxy A33 with the said 25W USB-C Samsung charger, and it replenished 50% of the battery in half an hour.
A full charge took 1 hour and 15 minutes, and in fact, that was the cited expected time to full charge by the software as well. "
Fast charging will yield roughly 2%@minute from 0-80% if battery doesn't go into over temperature ramp down. Time it to get the nominal rate for that device ie how many seconds per 1% when fast charging in the 40-70% range, probably 30-40 seconds per minute when new. As it's capacity from degradation drops so will this rate.
Charge rate will ramp down at around 80%, then again at about 90% to protect the battery.
Temperature is the biggest variable.
If the battery is below about 60F fast charging will not engage for that charge cycle in order to protect the battery.
Fast charging rate not clear cut as the power controller optimizes charge rate per conditions and will reduce charge rate if they're not in the optimum range.
Constant erratic fast charging cycles with a known good brick/cable indicates a battery failure.
Any battery swelling is a failure, stop charge and replace it asap. It can damage or destroy the phone
Replace the battery when it reaches 80% of its initial capacity, the end of its useful service life. At that point it's considered degraded, degraded Li's are far more likely to fail. An Li can fail at any time... it can happen fast. Cataclysmic failures however are rare.
My new A33 came a couple of days ago with about 30% charge. I used it a bit lightly with the intention of depleting it(so I can have it full when I root it), I haven't yet installed the SIM, and when it was about 15% I got tired so I downloaded an app "Generic Battery Drainer" to deplet it quicker until it reached 0% and turned off, then I charged it to 100% with the charger I purchased which came today(an OEM one)
I didn't know that you should never deplete the battery to 0% and also did not know that the battery should not be charged to 100%
I obviously also didn't know the dangers of high temperatures, because the drainer app took the cell phone to about 104ºF
What prompted me to post my question actually was that from 0% to 100% charge it took about 3 hours. So I'm wondering if maybe I should check if the OEM 25W charger that I got does not charge fast as advertised?
bogavante said:
My new A33 came a couple of days ago with about 30% charge. I used it a bit lightly with the intention of depleting it(so I can have it full when I root it), I haven't yet installed the SIM, and when it was about 15% I got tired so I downloaded an app "Generic Battery Drainer" to deplet it quicker until it reached 0% and turned off, then I charged it to 100% with the charger I purchased which came today(an OEM one)
I didn't know that you should never deplete the battery to 0% and also did not know that the battery should not be charged to 100%
I obviously also didn't know the dangers of high temperatures, because the drainer app took the cell phone to about 104ºF
What prompted me to post my question actually was that from 0% to 100% charge it took about 3 hours. So I'm wondering if maybe I should check if the OEM 25W charger that I got does not charge fast as advertised?
Click to expand...
Click to collapse
You should fully charge a new battery before using. Are you using the cable that came with the brick? Is the wall socket wired correctly?
3 hours is far too long for fast charging.
Observe while charging to see if it's fast charging be % per minute.
The display must be off or it will skew the charge rate badly. Start and maintain it in temperature parameters described when charging.
If it drops out of fast charging because of temperature it will likely not reengage unless the cycle is manually started again ie unplug/ plug back in. Don't try to fast charge a hot (>98F) battery, it won't work. Cool the battery down and use cooling while charging. A damp microfiber cloth and/or fan work well.
Briefly turning on the display will not break the fast charging, it will resume once you turn off the display. Low current drain apps like Poweramp/bt can be used while fast charging but not high current drain ones.
blackhawk said:
Are you using the cable that came with the brick? Is the wall socket wired correctly?
Click to expand...
Click to collapse
I used the cable that came with the OEM charger that I purchased, seems to be identical kind of cable as the one that came with the phone.
bogavante said:
I used the cable that came with the OEM charger that I purchased, seems to be identical kind of cable as the one that came with the phone.
Click to expand...
Click to collapse
Should be good to go.
When you get to 40%, try again... it's probably ok.
Try using a wall socket on a different breaker. Line voltage fluctuations won't effect this brick however neutral/ground fault might. Avoid using on a circuit with large induction motors on it ie microwave ovens, friges and A/C