I found this post by Kest, from Lenovo offical forums :
I talked to a technician. He told me that there are two 4300mAh bateries wired in serries, in the Lenovo Yoga Book (and other Lenovo tablets). Which means the tablet works on 12 volts.
8500mAh is the total capacity of two batteries that are valued at 3.8volts. Combined together in serries, they are boosted to 12v and run at 4300mAh.
Its a kind of semi scam by the Lenovo company, where they advertise the battery as 8500mAh (or 10050mAh in other models), which is a common practise in other popular brands.
Source: https://forums.lenovo.com/t5/Androi...MAH-battery/m-p/4083481/highlight/true#M20033
Related
I'm looking for help finding a Power Bank Power Pack for my Samsung Galaxy S5. There are many products, but all work equally well?
No. There are a lot of cheap, generic brand ones from China, etc that have questionable specs and safety.
But brand name models should provide the correct voltage, not present a fire hazard and be of reasonable build quality. Leaving you with two variables.. battery capacity /life and price.
So I'd look for something well made - which you can infer from a brand name product or examine in detail. And then at the battery capacity and battery type. You'd want one of the better battery types e.g. Li-Ion, not lead acid, gel, nicad or niMH.
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Hello,
i wanted to know, if a tablet (Lenovo A7-40) can support higher amperes?
The included charger is 1.0A. Does it mean, that it only supports 1.0A?
It does nearly takes 4 hours to charge it, although im using my 2.0 Samsung charger :/
Regards yener90
Hi all,
i have a Zenfone 2 (ze551ml) and a Zenfone 3 (ze520kl) .
With the Zenfone 2, using a quick charge adapter, the phone tells me that the quick charge is in progress (in the battery icon appears a "+" sign).
with the Zenfone 3 the behaviour is different: the phone doesn't give any indication about the charge (if normal or quick charge): no "+" signs, no indications at all.
Is it normal?
Thanks,
toomax
It's supposed to be officially compatible Quick Charge 3, as Qualcomm says on the PDF you can download here https://www.qualcomm.com/documents/quick-charge-device-list
Anyway, I bought a QC3 wall charger, but it's still very slow. I just asked Asus about it (because for my work and lifestyle, I REALLY need it), as soon as they answer my question, I'll let you know.
According to the Brazilian ASUS reps, the Zenfone 3 (ZE552KL)does not support Quick Charging after all. Even if the chipset supports, the power IC needs to support it too, and there are other components that needs to comply with QC 3.0, which is not the case in the ZE552KL.
As far as I'm aware of, the only phone of the Zenfone 3 line that officially supports QC is the Zenfone 3 Deluxe.
this is what i found by observing my phone (ZE520kl) Ma current with 3c battery monitor.
swap each combinations below every 10 minutes
change 3c monitor batterer to real-time record.
-Zen3 cable and zen3 adapter : +- 2050Ma
-Zen3 cable and QC 2..0 adapter : +- 1035Ma
-Zen3 cable and ordinary xiaomi power bank : +- 1680Ma
my old Zenfone 2 phone = zen2 cable + QC2.0 adapter : +- 2650Ma (0-60%)
Q.C (1 and 2) is not working (not sure Q.C 3.0)
Mr.Indigo said:
According to the Brazilian ASUS reps, the Zenfone 3 (ZE552KL)does not support Quick Charging after all. Even if the chipset supports, the power IC needs to support it too, and there are other components that needs to comply with QC 3.0, which is not the case in the ZE552KL.
As far as I'm aware of, the only phone of the Zenfone 3 line that officially supports QC is the Zenfone 3 Deluxe.
Click to expand...
Click to collapse
According to Asus France too. Just got the mail, the Zenfone 3 ZE552KL does not support QC. I will mail Qualcomm to indicate their error on the website. It's a pretty big error !
Not really.
The Zenfone 3 is projected to be cheaper than the Zenfone 3 Deluxe. According to Brazilian ASUS Reps, this was made strictly to cut costs - otherwise the device wouldn't be able to be on par with the competitors on the price. Yes, this is a huge downfall from the Zenfone 2, but the 10W adapter can supply it fine.
Hello guys.Today i had my Redmi Note 3 Pro repaired , because a chip/module (that is responsible for charging) burnt down.
To avoid this:
1.Lower your charging rate (stock 2000 mAh).And yes , i was using stock rate.
2.Use only original charging adapter.And yes i was using charger and cable out of the box.
3.Try to avoid gaming while charging ,because the phone heats up so hard, especially screen.
I was using Resurrection Remix OS ,but im not saying it is responsible for this cause.
And here is some additional information from georgek1 on miui forums
For those who don't know here are some things about QC and Xiaomi Redmi series.
Quick Charge (QC) is a patented technology by Qualcomm (the company behind the Snapdragons processors) which allows phones to be charged faster. Quick Charge comes in 3 versions (time values are for a 4050mAh battery) :
v1.0, released 2013, using 2.0A -> full charge in 2.43 hours
v2.0, released 2015, using 3.6A -> full charge in 1.32 hours
v3.0, released 2016, using 4.0A -> full charge in 1.215 hours
* QC 2 has backward compatibility with QC 1 and QC 3 has backward compatibility with QC 2 and 1.
Redmi Note 3 currently implements QC 1 or a similar Xiaomi-made technology that charges phone in 2A.
Quick Charge (in general) implementation requires a few things:
A processor capable of Quick Charge technology
An extra electronic circuit on the mobile motherboard
A Quick Charge capable/compatible charger + a good cable
Drivers (software) on Android ROM kernel
A license fee that is paid for every device sold with Quick Charge technology enabled
The most important thing is #1, the processor as is the base (heart) of the system. Redmi Note 3 Pro with Snapdragon 650 supports Quick Charge 3.0 as the 650 snapdragon is capable of this technology. But let's see all the requirements:
Snapdragon 650 supports QC 3 = OK
Extra circuit on motherboard = UNKNOWN (probably yes)
QC charger and cable = NO
Drivers on kernel = NO
License fee paid = NO
* Some people say about batteries. QC doesn't require any special designed batteries. It works with all batteries on the market. That is it's goa,l to implement faster charging with current battery technology.
OK now, drivers are missing 100% and it has already confirmed by author or RADON kernel (@Umang96). His words:
this kernel at present does not use any charging driver hacks, I did try adding charging hacks in past but they did not work well and seemed ineffective, thats why I decided to keep charging drivers stock (same as xiaomi). We still get 1700-2000mA charging rate with stock charger which is good enough. Also, I don't recommend anyone to buy QC2.0/turbo/fast chargers, I use the stock charger and cable only.
Although QC has been originally enabled by @Umang96 in RADON kernel, he has later remove it. That makes me feel that QC 3 or 2 implementation in Redmi Note 3 is not possible due to software/kernel (#4) missing drivers or due to lack of the extra circuit required in hardware level (#2).
Why Redmi note doesn't have QC by default? Here is my guess:
The extra hardware circuit on motherboard may cost around $1
The QC charger will cost like more because it includes a) an extra circuit inside the charger $1 + b) license fee paid to Qualcomm for every charger $3
At least $3-5 fee for Qualcomm for every device sold with QC enabled.
That makes an extra $7-10 on factory level cost. An extra $10 for million devices is a big number. Also, that factory costs will lead to an extra $20 value on the consumer which makes the phone more expensive for its category.
Also my final guess is that Xiaomi wants extra things enabled for "Mi" (the good series) of phones in order to separate them from the cheaper "Redmi" series phones.
It would be very nice if QC-enabled processor phones which has QC disabled by factory, to have an option (like an application) which will allow users to pay the licensee fee and enable the QC option. I would be more than happy to pay $10 even $15 with my credit card to enable QC in my phone.
Click to expand...
Click to collapse
Have a good time using this budget masterpiece!
QC2 and QC3 are 9V 1.5A usually, there is no 3.6A or 4A.
Latest radon supports QC.
QC works but it's not properly slowing down with usage and instead going up, that's why your charging port got damaged.
If using QC phone should be idle or used very lightly, if you plan on using the phone you need to charge with non QC charger.
Your answer is in your post itself:
Snapdragon 650 supports QC 3 = OK
Extra circuit on motherboard = UNKNOWN (probably yes)
QC charger and cable = YES ( I have QC 3.0 cable and charger and most people use it too)
Drivers on kernel = YES (use custom kernels to support it)
License fee paid = NO ( Does it really matter as an end customer? )
Click to expand...
Click to collapse
I've using QC from the day it was supported by the custom kernels like Radon and others. So far, there are no issues with the charging etc. My RN3 is 13-14 months old now as I got it the day it was launched.
End story: it's just bad luck.
Dziugsas said:
Hello guys.Today i had my Redmi Note 3 Pro repaired , because a chip/module (that is responsible for charging) burnt down.
To avoid this:
1.Lower your charging rate (stock 2000 mAh).And yes , i was using stock rate.
2.Use only original charging adapter.And yes i was using charger and cable out of the box.
3.Try to avoid gaming while charging ,because the phone heats up so hard, especially screen.
I was using Resurrection Remix OS ,but im not saying it is responsible for this cause.
And here is some additional information from georgek1 on miui forums
Have a good time using this budget masterpiece!
Click to expand...
Click to collapse
This is what I have tried to say from the beginning. Now you explained it perfectly! Thanks.
I've purchased this tablet since a few hours and I've noticed that all hw apps, like hwinfo, cpuz, etc. recognize the battery with a capacity of only 2000 mAh, unlike 4250 mAh.
Is it possibile and Could I have received a "fake"?
[emoji848][emoji848]
Sent from Lenovo TB3 8 Plus
Following the Accubattery info the battery seems to have a real capacity of 3700 mAh instead that of 4250 mAh, as from specs.
Sent from Lenovo TAB3 8 Plus