How to bypass battery or use a powerbank to directly run a Yuphoria Mobile
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i wanna directly use powerbank instead of battery. or by pass battery to directly run mobile.
current battery is damaged/swollen and even if i buy new battery which im finding it difficult to find the same, it will eventually be damaged soon as connect the mobile to charger for using it as a hotspot.
Below are the details of the mobile
Cyanogen Version YU5010
Battery 2230 mAh 3.8V 8.37Wh.
Charger output 5V 1500mA.
Used Ampere App to determine the below details.
on battery (damaged) current – min 140mA max 260mA & voltage – min 3.9V max 4.3V.
as i understand the mobile reqs 3.8V and 100-500mA (not sure & confirmed).
also im unable to find any power bank with 3.8V and 500mA rated output.
so i need to use step down converter to step down voltage from 5 to 3.8 and current from 1A to 500mA (assuming im going for power bank with output 5V and 1A).
also stepping down efficiently without more power loss.
let me know if u have ny knowledge/idea or u have done similar like this or any other way to run the mobile without mobile battery.
also let me know if wanna know any more details.
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dongle is not a solution coz i need to make and receive calls also.
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as always thx bro 
Redmi devices have this great feature of charging directly from the AC Mains once the battery is fully charged. They are ideal for using as hotspots. Plus with root one could set the battery to charge to only say 80% which considerably aids it’s longevity.
was not aware about redmi charging feature. is it there in all devices like redmi 7a/6a/5a?
If Yuphoria also has this feature you could buy a an inexpensive 3rd party battery and charge it from the power bank. Yu devices AFAIK have decent development.
actually my battery got swollen and damaged coz i used to plug in continuously for long hours. so i think even the new battery will surely get damaged. so was thinking if i could use powerbank as battery + it would run even when there is no ac power.
P.S. While the charging behavior is similar to laptops I don’t think they will work w/o a battery.
but many mobiles earlier works if we give direct power to battery connector pins inside mobile.
The peak charging current for most devices w/o Quick Charge or equivalent is around 2000mA. Even my old Nokia with a mere 1020mAh battery charges at 800mA. I think you got your info wrong.
Edit: It supports QC 1.0. Anyways a degraded battery…
ok ur talking abt charger but what abt the drawing mobile operating current from battery. it varies upon the mobile state. i cant feed 1A directly (to battery pin connectors inside mobile) orelse mobile will get fried.
edit. in the main post i have mentioned the yuphoria charger which was supplied with the box. which is 5V and 1500mA.
In supported devices, once the battery is fully charged, the devices bypasses the battery and directly draws current from the charger just like in laptops.
The battery will not draw any further current neither will it discharge as long as the charger is connected.
Rooting Yu devices should be pretty trivial.
@LIMBO bro sorry forgot to mention that the micro usb charging connector in the mobile is damaged i.e. its loose and have to try multiple times to power the device (using the current swollen battery as mobile wont power-on without battery). so i was thinking powering directly with power bank would the best solution in this situation.
That puts a big spanner in the works. IIRC YU devices were just rebranded from Chinese ODMs. In case the USB port is on a daughter board separate to the motherboard as in RN3 both the board and the battery probably could be sourced from Aliexpress for cheap.
P.S. Don’t have any idea about directly powering of off the power bank.
even this is not a solution. 
Buy this. Connect with caution after checking voltage. Buck converters. Find more cheap ones. Suggested as you are using as “hotspot only device”
https://m.aliexpress.com/item/32825777330.html?...
im aware of this bro and this is only step down voltage regulator and it doesn’t regulate current. i need to step down both voltage and current from powerbank rated outputs and preferably with lowest power loss.
Throw Ur yu
And buy a hotspot device.
Airtel 4g hotspot comes around 300rs hardly
Please can you share link for Airtel hotspot at 300 rs.
purchase a new battery u can easily get under 250 rs with brand warranty of 6 months , if not found pm me i will give details, afaik lenovo p6 also have the same battery
bro pls share.
@rsai01 @iHuntDeals @getready @ithehappy @Roushh @raghupro guys any idea?
Very long back I was also trying to do this but dropped the idea and got a data card. I remember seeing a few youtube DIY vids about it and I felt it could be easily done . It involved stripping USB cable and attaching it to the phone leads. Try checking them out.
Ha ha I have no idea bro. Actually I don’t even have a power bank 
Sad lyfe
not having a power bank doesn’t make life sad 
Be hassle FREE redeem ur dimes n it’s HIGH time to buy NEW one…
bro, this is not a solution. i need to even receive calls on this sim which cant be accomplished via dongle.
still looking
@rajrocks Here’s some insight
If you wish to replace the battery with a power bank or any other source, you need get the voltage correct first and then decent current rating.
- You can use a buck converter to reduce 5V(power bank) to 3.8V
- There is no rule that a mobile needs constant current source to operate, the amount of current consumption changes as based on the features you operate on the phone. So as long as you have a source which can deliver say 2A max, the phone will do good. Just for reassuring you, although if your power bank can source 10A, you phone will not take it completely, it will take only what it needs. But it is a good idea to limit the current to 2 times the peak current that the mobile consumes.
(I’m not sure if I talked a lot in my previous point, but be assured a 3.8, 2A rated buck converter will not damage your phone. If your source operates in constant current mode, then you will end up frying the phone, but I’m sure no engineer does that kind of design unless it is really needed)
Finally getting a 3.8V 2A rated buck converter is a big deal if you wish to enclose that in place of battery or hang another small box outside alongside power bank.
Now another point not to miss on is the batteries usually have 3rd terminal apart from positive and negative. 3rd terminal usually communicates to phone about the battery temperature. Or sometimes it communicates back with health of the battery. Not sure what happens in your phone model. All that pin needs is some kind of OK message to operate. A few operate usually even if it is missing, and some don’t unless it gets a valid message. This can be figured out by some test and trials.
PS: Trust me, I’m an electronics engineer.
thx for looking into this and responding with ur insight.
buck converter as i see step downs voltage and steps up current but over here i need to step down both voltage and current. im unable to find any buck converter which steps down both. also would be great if i can change current dynamically so that i start stepping up from 500mA and see if it works out or not. would be able to get an idea abt the current req by the mobile to work smoothly.
also im not sure but 2A feels too much and may fry the mobile. so im thinking of 500-1000mA would work out but still i don’t know how much max current yuphoria takes. any idea to find this out?
You just need to provide the voltage and a current range upto 1A (it can be any). The mobile consumes as per the requirement from the available limit. Just because you set a limit to 1A, it doesnt mean the mobile will consume the same.
The buck regulators/boards on amazon may not be a good one in terms of regulation. I’m not quite sure of it. You may proceed with caution
Hi. My mobile working . Power bank or charging. Without battery Mobile any problem
Redmi devices have this great feature of charging directly from the AC Mains once the battery is fully charged. They are ideal for using as hotspots. Plus with root one could set the battery to charge to only say 80% which considerably aids it’s longevity.
If Yuphoria also has this feature you could buy a an inexpensive 3rd party battery and charge it from the power bank. Yu devices AFAIK have decent development.
P.S. While the charging behavior is similar to laptops I don’t think they will work w/o a battery.