₦airaland Forum

promo! promo!! promo!!!

Get mayor source 12000mah mobile power bank at #3000 today and tomorrow. This offer ends 11:59pm tomorrow. Thanks

promo! promo!! promo!!!

Get mayor source 12000mah mobile power bank at #3000 today and tomorrow. This offer ends 11:59pm tomorrow. Thanks

SkyLinkss:
550k

Is that the last I can get it sir?. Please can you give real expected price. Thanks

akinsadeez:
Yeah. Its been a while. How's business?
Well, its still the same. I only get two full charge from it with a remnant of about 5-6% on the Powerbank.

ok my friend. This is battery actually works. I hope you can t as ke your time to read sir.


i did
some search on lithium ion, charge rate of a PB and a mobile
charger, PB capacity, power and some other searches and found
out some information i'd like to share as it explained why i had
anomalies #1 and #2.
Using a powerbank with a capacity of 12000mah, the internal
battery of the PB is usually at 3.7v. That means the total charge of
the PB = 12000mah x 3.7v = 44400mWh (44.4Wh).
When the PB is used to charge products such as a smartphone for
example, the output voltage is 5V, thus the total eletric charge is
44400/5V = 8880mah.
Two types of conversion occurs during a charging process using a
PB.
First conversion occurs when the PB internal circuit converts the
internal voltage of 3.7V to 5V, consuming some power in the
process and reduces its efficiency..
Second conversion occurs when the phone internal circuits converts
the 5V back to 3.7V, this consume some power and further reduces
the efficiency to around 80%.
So based on the total charge of the PB which is 8880mah and the
fact that efficiency isn't 100%.
We have 8880 x 0.8 = 7104mah. This is exactly the capacity of the
PB after all these conversions, power consumption and heat loss.
Since i use a 1400mah battery, total time charge = 7104/1400 =
5.074 times.
So a complete charge of my phone will take 100/5.074 = 19.708%
from the PB.
Also a charger with an output of lets say 500mA wont give out all
the 500mA, due to heat loss and efficiency not 100% , the charger
gives roughly 500 - 22% (+/- 3%) = 400mA - 375mA.
So to charge a PB that requires it's advisable to use roughly 1.2A to
1.5A so that after the heat loss, we still have rougly 1A .
Also the belief that a charger with an higher output known as rapid
charger or fast charger will only charge a device to some extent.
New devices uses a protection inbuilt circuit that limits the current
entering the device.
Most battery, phone, and other gadgets manufacturers include a
protection circuit to protect the battery and make it durable. Mayor
Source battery make use of this protection circuits according to my
tests.(Assumption).
For example, a charger with 700mA will charge a little bit faster than
a charger with an output of 400mA if the device input current max is
1A or higher. But a 2A output charger will take the same time as a
1.8A or 1.5A output charger as the device can only collect a max of
1A.
With all these info, i charged my PB from 91% to 100% from 8am to
around 09:30am and trickle charge it till 11:30am using a 2A
charger.
I used it to charge my PB once and it went from 100% to 81% i.e.
19% for a complete charge which was in accordance with my
estimates i mentioned.
The PB is working well and charges fast and i have been using my
phone since 7:30am today after charging it with my PB ( The charge
on my phone tend to last longer when using it than using a
generator)
N.B : Sorry for the long write up. my hand sef don dey pain me as i
dey use a phone type this.
P.S; Tired to starting proof reading and editing any grammatical
error in the write up, so endure



A customer honest review.

One have to cut his coat according to his size. Please what's the budget for Honda bullet tiger face. Auto transmission sir.

Iggyok:
Mayor has finally reach my village ikot ekpene,kudos boss

.longest time boss. How is business.

Nigeria and politics is a life time course.

coolsamba:
I hv a power bank(5600mah), but it only charge my samsung cant charge my bold5...pls i need a good powerbank in akwaibom state dat can charge my bold5. I am in akwaibom state(ikot ekpene)

Contact him. He resells mayor source power bank in your state. Mayor source will charge your bold 5 atleast 5times.

+234 806 233 6733

Cybermugu1:
I neva receive anything oo, just hopes all is well.

Hi cybermugu,


I wrote " alert received". Not goods received. Also can I know your location to track your goods sir?.

Eghosa1:
Domor buddy, I'd prefer you get @Mayorall widely accepted power banks. Its 12000 mAh, affordable and high quality.

Thanks for the mention sir.

akinsadeez:
Where is the guy and where is the handsome

Longest time. How are you. And is your power bank peeforming?.

tranxo:
modify the one you already voted and add my 2 girls to it. Daalu.

Done. My lady will vote your Second candidate. Make i wake missmayorall.


Ife mi , kindly vote vivly and maureensylvia and I repair your phone

lordfalcao:
Na me carry yu come,here o vote for Omolola1

No vex. I go join your campaign or tell my lady to vote her. Oya make a choice

tranxo:
maureensylvia and vivly

I fit vote twice?.

englishmart:
Bros. This your power bank, does it last for 6 months?

www.nairaland.com/attachments/1838669_mayorsource_jpeg25cc040c4fa4445251b7a51ecb1e6422

The power bank I use lasts for 5month and 28 days. I need an upgrade.

It last for years sir. Check mouth watering reviews here

www.nairaland.com/1831348/mayor-source-12000mah-full-capacity

Annypie:
I need ur vote dear....u sure cnt go wrong.

twuld be highly appreciated...thanks a bunch

I vote Annypie and vivly

Who do I vote?

oluomoadebayo:
Why not embassy? Or you don't like solids?

I say make i run form small ni.

Alert Received. ITEM SENT TO LAGOS. Receiver pays transport company in Lagos.

oluomoadebayo:
Osogbo .

Also in Osogbo. where in Osogbo sir. make you carry me go Ostrich.

oluomoadebayo:
Osun state.

Where in Osun?.

Alert received yesterday. All items sent

labellat:
Any reseller in Ibadan.

NO sir. Sending cost to Ibadan is #500. 2 hours delivery.

phemmy26:
Hello, all,

please i need some information. I happened to buy some stuffs from asos which amounts to about 60k, items bought were shoes, bag and clothes and all of a sudden i received a mail that from skynet that i was to pay a custom charge of 30k on top items that was not up to 60k. On getting to there office, they were telling me that custom charges is 52% of the total cost of items. Is it true? cos i thin this is daylight robbery

custom charge is 5% vat , 5% duty. Some items does not attract vat. The highest you are supposed to pay is 10% of the total cost. Go violent with them man. Items less than 10kg is not dutiable, less than $500 is not dutiable.

tranxo:
Please my people make una no laugh me ooo. I don't have a dog but just curious on 2 things; do you clean up your dog after each poo or are they self-cleaning? Also, how una dey take brush their teeth and also bathe them....?..lol

Oga mi. No tear my belle o.

Alert received yesterday. Thanks for your patronage

henrixx:
I need this tab soonest ...am in kano
can we talk business

Yes mr henrixx

www.mayorall.com

Email : info@mayorall.com

whatsapp : 07066435369

BBM : 7FDE8205

dasanchez1:
dav8id and mayorall can do it for you. oga dav8id delivered my own wristband on target .


tested and trusted.

Thank you my friend. But oga David is the boss in the house sir.

osram:
hw much did dav8id charge u per piece....mayorall z charging 120per piece

Please don't stain my name. nairaland is very sensitive. I showed big size and small size with different prices on my site.

Usjimy:
Send me your details so you could send down to me @ Portharcourt.
Notify me where to pick it up

Account name : mayorall goods Nigeria enterprises

Account number : 2025011533 first bank.



Pick up point is city Roller ' office at ELIOZU.