With a large capacity of 26,000mAh, the Monster Power Bank can charge multiple mobile devices such as smartphones and tablets to keep them running when you are out living life, without worrying whether you will have enough power to talk, snap and play. It is ideal for home use, road trips, long flights and outdoor activities.
The Monster 26,000 mAh Power Bank can automatically detect the input
current demand of different devices and their specific charging needs
for improved compatibility.
With 3 USB slots it is powerful enough to charge multiple devices at the
same time. From mobile phones, tablets, mp3 players, and other devices
that use USB charging.
Key Features
- High capacity of 26,000mAh
- 3 USB output sockets
- Multiple safety protection system to ensure that devices are charged
safely
- Smart LEDs display remaining power
- Output power: 2 x 1A USB ports and 1 x 2.4A USB port
Specification
Height: 215mm
Width: 81mm
Length: 23mm
Weight: 570g
Approx. Charge times
- iPhone 5s: up to 11 times
- iPhone 6: up to 10 times
- iPhone 6 Plus: up to 6 times
- Galaxy S6: up to 7 times
- Galaxy Note 4: up to 6 times
Top comments
qwerta369
9 Dec 163#1
This will almost certainly not be 26000 mAh.
Latest comments (21)
shootomanUK
26 Dec 16#21
hence why its 26000mah..., it obviously gas more cells inside would be my guess :smiley:
carefulbuyer
25 Dec 16#20
also, this is the size of a brick !!
carefulbuyer
25 Dec 16#19
*edit obviously "free" should have been "few" damn autocorrect.
carefulbuyer
25 Dec 16#18
that is the problem, free people understand batteries.
LiPo cells have a nominal voltage of 3.7v and a MAXIMUM CHARGE voltage of 4.2 V and a fully discharged voltage of 3.0v
Li Ion have a nominal voltage of 3.6v but then you can have cobalt and phosphate based versions that are slightly higher voltage with nominal volts up to 3.85.
hope this helps.
with relation to this battery I'd pretty much bet my life that if you do get the stated capacity, you won't after a few weeks.
qwerta369
13 Dec 16#17
I have a white genuine Xiaomi 20000 mAh powerbank. She charges my iPhone 6S plus very quickly, averaging around 5-6 0-100% charges before dying. Build quality is great. She is supreme. I love her. I bought her in Singapore.
MrBThatsMe
13 Dec 16#16
I know nothing about these, but when you guys are arguing about realistic capacity and charging efficiency etc, does this only apply to certain capacities or brands or is it most/all power banks? I was thinking about ordering a 10000 anker with quick charge 3.0 for £20 before I seen this one but now I don't know what to do.
stuellis
11 Dec 16#15
No they aren't, that's not what they mean at all. They are saying it can put out 5v @ 9500mha but the cell is 15000mha @ 3.7v. Its not that simple and that's part of my point, if a 15000mha the 9500mha will be an over estimation as you cant fully discharge or full charge it without reducing its life.
15000x3.7v = 55.5Wh
But the unit has to convert 3.7v to 5v and this process they claim is 86% efficient.
So (55.5Wh/5.0v)*86% = the theoretical 9500mha
A contributing factor is people use mha when they should use Wh
This all goes back to my original point. The only way to accurately measure the cells mha is to take it out the power bank and test it. In the power bank there are too many variables.
DELOS
11 Dec 16#14
They are telling me (the people who make the pack) that a 15000 mah is actual about 9500 mah
stuellis
11 Dec 16#13
And its overly simplified to the point of being useless
DELOS
11 Dec 16#12
This is a copy of the email sent to me from Ravpower to explain the power output drop
Clearly a response from someone with either a very basic understanding or being conservative with the truth. Not all power banks use 3.7v, it is more common to use a 3.7v Li-ion cell but some do use 4.2v Li-po. Li-ion are safer but have a lower power density. The efficiency of the voltage conversion will vary a lot between brands and 86% seems very optimistic. The efficiency also varies depending on the discharge current used. You also will never get the full capacity of the cell either due to the protection built into the power bank, the charging circuit will stop the cell charging before 100% is reached to increase the life of the cell and reduce fire risk. You also will never discharge a cell 100% in the device, it will shutoff before to again protect the cell. The only accurate way to measure the cell is to take it out of the device.
DELOS
10 Dec 16#8
What common sense? The cells that go into these can come in this capacity and the only way to test the capacity is to take the cell out of the unit and test it which the majority of reviewers don't do. I'm not saying it isn't false advertising but Ive had 2 brilliant 22,400mha packs for about £14 each.
I purchased a ravpower from amazon and questioned the capacity the reply follows:
Dear customer,
We understand your concern. Please allow me to explain this issue. Hope it can clarify.
The voltage of a power bank is 3.7v. And to charge a portable device, its output voltage should rise to 5v. As there is a process of boosting the voltage from 3.7v to 5v, some battery juice will lose when charging a device
The average conversion rate of a power bank in the market is around 80%, we can use a formula to calculate the actual output = nominal capacity*3.7v/5v*80%. As the conversion rate of our power bank can reach 86%. We can get the result that the actual output of 15000mAh is 9546mAh.
The one without iSmart logo is the older version. But please rest assured that the performance is the same. Sunvalleytek is our exclusive distributor so all the RAVPower products sold by Sunvalleytek is genuine.
Any additional questions, please do feel free to let us know.
Thank you for your continued support.
Sincerely,
Livia
DELOS
10 Dec 16#7
I bought a ravpower 15000mah from amazon and questioned the capacity the reply follows:
Dear customer,
We understand your concern. Please allow me to explain this issue. Hope it can clarify.
The voltage of a power bank is 3.7v. And to charge a portable device, its output voltage should rise to 5v. As there is a process of boosting the voltage from 3.7v to 5v, some battery juice will lose when charging a device
The average conversion rate of a power bank in the market is around 80%, we can use a formula to calculate the actual output = nominal capacity*3.7v/5v*80%. As the conversion rate of our power bank can reach 86%. We can get the result that the actual output of 15000mAh is 9546mAh.
The one without iSmart logo is the older version. But please rest assured that the performance is the same. Sunvalleytek is our exclusive distributor so all the RAVPower products sold by Sunvalleytek is genuine.
Any additional questions, please do feel free to let us know.
Thank you for your continued support.
Sincerely,
Livia
ollie87
10 Dec 16#6
You can test it without taking it apart.
qwerta369
9 Dec 163#1
This will almost certainly not be 26000 mAh.
stuellis to qwerta369
9 Dec 161#2
Based on?
hamzahuk to qwerta369
9 Dec 161#5
I'm with you on that one aswell.
stuellis
9 Dec 162#4
What common sense? The cells that go into these can come in this capacity and the only way to test the capacity is to take the cell out of the unit and test it which the majority of reviewers don't do. I'm not saying it isn't false advertising but Ive had 2 brilliant 22,400mha packs for about £14 each.
ollie87
9 Dec 161#3
Common sense and the fact that all these random non-brand powerbanks lie.
Opening post
The Monster 26,000 mAh Power Bank can automatically detect the input
current demand of different devices and their specific charging needs
for improved compatibility.
With 3 USB slots it is powerful enough to charge multiple devices at the
same time. From mobile phones, tablets, mp3 players, and other devices
that use USB charging.
Key Features
- High capacity of 26,000mAh
- 3 USB output sockets
- Multiple safety protection system to ensure that devices are charged
safely
- Smart LEDs display remaining power
- Output power: 2 x 1A USB ports and 1 x 2.4A USB port
Specification
Height: 215mm
Width: 81mm
Length: 23mm
Weight: 570g
Approx. Charge times
- iPhone 5s: up to 11 times
- iPhone 6: up to 10 times
- iPhone 6 Plus: up to 6 times
- Galaxy S6: up to 7 times
- Galaxy Note 4: up to 6 times
Top comments
Latest comments (21)
LiPo cells have a nominal voltage of 3.7v and a MAXIMUM CHARGE voltage of 4.2 V and a fully discharged voltage of 3.0v
Li Ion have a nominal voltage of 3.6v but then you can have cobalt and phosphate based versions that are slightly higher voltage with nominal volts up to 3.85.
hope this helps.
with relation to this battery I'd pretty much bet my life that if you do get the stated capacity, you won't after a few weeks.
15000x3.7v = 55.5Wh
But the unit has to convert 3.7v to 5v and this process they claim is 86% efficient.
So (55.5Wh/5.0v)*86% = the theoretical 9500mha
A contributing factor is people use mha when they should use Wh
This all goes back to my original point. The only way to accurately measure the cells mha is to take it out the power bank and test it. In the power bank there are too many variables.
http://www.ebay.co.uk/itm/Monster-Power-Bank-26-000mAh-with-3-USB-Charging-Ports-For-Tablets-Mobile-Phones/282280533613
I purchased a ravpower from amazon and questioned the capacity the reply follows:
Dear customer,
We understand your concern. Please allow me to explain this issue. Hope it can clarify.
The voltage of a power bank is 3.7v. And to charge a portable device, its output voltage should rise to 5v. As there is a process of boosting the voltage from 3.7v to 5v, some battery juice will lose when charging a device
The average conversion rate of a power bank in the market is around 80%, we can use a formula to calculate the actual output = nominal capacity*3.7v/5v*80%. As the conversion rate of our power bank can reach 86%. We can get the result that the actual output of 15000mAh is 9546mAh.
The one without iSmart logo is the older version. But please rest assured that the performance is the same. Sunvalleytek is our exclusive distributor so all the RAVPower products sold by Sunvalleytek is genuine.
Any additional questions, please do feel free to let us know.
Thank you for your continued support.
Sincerely,
Livia
Dear customer,
We understand your concern. Please allow me to explain this issue. Hope it can clarify.
The voltage of a power bank is 3.7v. And to charge a portable device, its output voltage should rise to 5v. As there is a process of boosting the voltage from 3.7v to 5v, some battery juice will lose when charging a device
The average conversion rate of a power bank in the market is around 80%, we can use a formula to calculate the actual output = nominal capacity*3.7v/5v*80%. As the conversion rate of our power bank can reach 86%. We can get the result that the actual output of 15000mAh is 9546mAh.
The one without iSmart logo is the older version. But please rest assured that the performance is the same. Sunvalleytek is our exclusive distributor so all the RAVPower products sold by Sunvalleytek is genuine.
Any additional questions, please do feel free to let us know.
Thank you for your continued support.
Sincerely,
Livia