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HETTP 25800 mAh Portable Charger Power Bank - £13.99 (Prime) / £18.48 (non Prime) Sold by HETP Driect and Fulfilled by Amazon.
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HETTP 25800 mAh Portable Charger Power Bank - £13.99 (Prime) / £18.48 (non Prime) Sold by HETP Driect and Fulfilled by Amazon.

46
Posted 4th Oct

This deal is expired. Here are some options that might interest you:

  • ★★ Warranty 24 months ★★ The portable charger has 24 Month Warranty Policy,if you have any problem, please contact us. ☏ ☏24 hours customer service online to help you.
  • 【Newest Glossy Design】Power bank glossy design has scratch-resistant, dust-proof and oil-resistant function. The surface of portable charger completely polished can be used as a mirror. The round edge makes it easy to hold.
  • 【25800mAh Large Capacity】Power bank can charge your device 5-6 times, adequate capacity for your trip.[Note:High capacity so the power bank weight 350g]
  • 【2 Port Output】The portable charger with 2 USB ports in combination with a 5V / 2.1A and 5V / 1A output will provide your device with fast enough power.
  • 【Protection System】Multiple protected circuits protect your devices from excessive power, overheating and overcharging
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worthinger04/10/2019 13:19

Not sure about the maths of this one.Claims to charge and S9 4.6 times, …Not sure about the maths of this one.Claims to charge and S9 4.6 times, but that's 3500 battery: 3500*4.6=16100.Where's my other 2.75 charges?


Any portable charger will only ever deliver you about 70% of stated capacity due to inefficiencies, so for 25,800 you will only actually get about 18,000 in reality. It does actually hold 25,800, you just won't get it all.
BargainHunta9604/10/2019 13:39

Actually the S9 has a 3000mah battery but to answer your question maybe it …Actually the S9 has a 3000mah battery but to answer your question maybe it depends on the speed of the charge? Like if you use the original fast charging brick and cable it would take 90 minutes, if this power bank doesnt have fast charging capabilities then it will take longer theres your answer.


Haha, that's quite in interesting take on the situation, unfortunately you'll find that an article like this is a little more accurate!
46 Comments
Delivery £4.49.
Not sure about the maths of this one.

Claims to charge and S9 4.6 times, but that's 3500 battery: 3500*4.6=16100.

Where's my other 2.75 charges?
worthinger04/10/2019 13:19

Not sure about the maths of this one.Claims to charge and S9 4.6 times, …Not sure about the maths of this one.Claims to charge and S9 4.6 times, but that's 3500 battery: 3500*4.6=16100.Where's my other 2.75 charges?


Actually the S9 has a 3000mah battery but to answer your question maybe it depends on the speed of the charge? Like if you use the original fast charging brick and cable it would take 90 minutes, if this power bank doesnt have fast charging capabilities then it will take longer theres your answer.
BargainHunta9604/10/2019 13:39

Actually the S9 has a 3000mah battery but to answer your question maybe it …Actually the S9 has a 3000mah battery but to answer your question maybe it depends on the speed of the charge? Like if you use the original fast charging brick and cable it would take 90 minutes, if this power bank doesnt have fast charging capabilities then it will take longer theres your answer.


Haha, that's quite in interesting take on the situation, unfortunately you'll find that an article like this is a little more accurate!
BargainHunta9604/10/2019 13:39

Actually the S9 has a 3000mah battery but to answer your question maybe it …Actually the S9 has a 3000mah battery but to answer your question maybe it depends on the speed of the charge? Like if you use the original fast charging brick and cable it would take 90 minutes, if this power bank doesnt have fast charging capabilities then it will take longer theres your answer.


No. Its about the capacity of the battery not the speed of charge.

With a 3000mah battery you would expect to be bake to charge it 8.5 times with this item if its true capacity is 25800mah.

I'm just sceptical of the claims often made for this type of item. What's the point buying it if it only has c60% of the claimed capacity?
woldranger04/10/2019 13:44

Haha, that's quite in interesting take on the situation, unfortunately …Haha, that's quite in interesting take on the situation, unfortunately you'll find that an article like this is a little more accurate!


This is my whole point: the power bank charges at 5v and discharges a 5v yet sellers like to state the capacity at 3.7 volts.

Look at this pic of an S9 battery: 3.85v. So the difference between the actual capacity of this power bank and the number of times it can charge an s9 should not be so disproportionate. 38604852-aBJ2G.jpg
Edited by: "worthinger" 4th Oct
worthinger04/10/2019 13:19

Not sure about the maths of this one.Claims to charge and S9 4.6 times, …Not sure about the maths of this one.Claims to charge and S9 4.6 times, but that's 3500 battery: 3500*4.6=16100.Where's my other 2.75 charges?


Any portable charger will only ever deliver you about 70% of stated capacity due to inefficiencies, so for 25,800 you will only actually get about 18,000 in reality. It does actually hold 25,800, you just won't get it all.
worthinger04/10/2019 13:52

This is my whole point: the power bank charges at 5v and discharges a 5v …This is my whole point: the power bank charges at 5v and discharges a 5v yet sellers like to state the capacity at 3.7 volts.Look at this pic of an S9 battery: 3.85v. So the difference between the actual capacity of this power bank and the number of times it can charge an s9 should not be so disproportionate. [Image]


Heat and power losses from conversion up and down. And the power rating is the Wh of the actual battery in it. There is nothing sinister at play.

No USB-C is mildly annoying - not essential but you can charge devices and recharge the power bank a lot faster with that.
Edited by: "plewis00" 4th Oct
ghostm4n04/10/2019 14:22

Any portable charger will only ever deliver you about 70% of stated …Any portable charger will only ever deliver you about 70% of stated capacity due to inefficiencies, so for 25,800 you will only actually get about 18,000 in reality. It does actually hold 25,800, you just won't get it all.



plewis0004/10/2019 14:46

Heat and power losses from conversion up and down. And the power rating is …Heat and power losses from conversion up and down. And the power rating is the Wh of the actual battery in it. There is nothing sinister at play.No USB-C is mildly annoying - not essential but you can charge devices and recharge the power bank a lot faster with that.


Ha, the equivalent of contents may settle.

If it's not accessible don't claim it. Simple.
worthinger04/10/2019 14:59

Ha, the equivalent of contents may settle.If it's not accessible don't …Ha, the equivalent of contents may settle.If it's not accessible don't claim it. Simple.


Yeah well @woldranger article explains it. The battery gives the full capacity but you lose some due to conversion. It’s not their fault if you don’t understand physics, sorry. The battery inside has a nominal capacity of 25,800mAh at a voltage of 3.7V - FACT. Saying it’s less would actually be negligent and wrong.

Everything has efficiency losses. The engine in your car is only about 20% efficient, should they factor that into the MPG figures too? As you lose 80% of the energy contained in petrol as heat, waste gases, noise, etc?
Edited by: "plewis00" 4th Oct
Showing as £16.99 now.
this came up on fakespot as an F - looked at some of the reviewers reviews. They seem tho have a need for powerbanks and wireless earphones as they have bought loads in the last few months - be wary re the reviews I suppose - seemed like a bargain but i might give it a miss
sheepdognwolf04/10/2019 15:21

this came up on fakespot as an F - looked at some of the reviewers …this came up on fakespot as an F - looked at some of the reviewers reviews. They seem tho have a need for powerbanks and wireless earphones as they have bought loads in the last few months - be wary re the reviews I suppose - seemed like a bargain but i might give it a miss


That's the problem with some of these off-brands. It does look like a lot of capacity for not a lot of money though. I've always stuck to the usual ones - Anker, Aukey, Tecknet, PowerAdd, RAVPower, UGREEN, Griffin, Mophie, etc.
dealdelver04/10/2019 15:19

Showing as £16.99 now.


Is the £3 voucher gone?
plewis0004/10/2019 15:18

Yeah well @woldranger article explains it. The battery gives the full …Yeah well @woldranger article explains it. The battery gives the full capacity but you lose some due to conversion. It’s not their fault if you don’t understand physics, sorry. The battery inside has a nominal capacity of 25,800mAh at a voltage of 3.7V - FACT. Saying it’s less would actually be negligent and wrong.Everything has efficiency losses. The engine in your car is only about 20% efficient, should they factor that into the MPG figures too? As you lose 80% of the energy contained in petrol as heat, waste gases, noise, etc?


Ffs wind yourself in. I do have basic understanding of physics. Ego rider or what.

Your analogy with petrol doesn't work - I would have thought a professional physicist like yourself would have been able to see that through his electron haze. MPG relates to the car and not the petrol. <facepalm>.

The item in question outputs at 5v and the average consumer wants to know what the real world capacity of it is without having to convert between voltages.

In saying that, if it can only charge a 3.85v battery with a capacity of 3000mah 4.6 times then it's a piece of junk. Unless you want to justify an inefficiency of c. 50%?
worthinger04/10/2019 15:35

Ffs wind yourself in. I do have basic understanding of physics. Ego rider …Ffs wind yourself in. I do have basic understanding of physics. Ego rider or what. Your analogy with petrol doesn't work - I would have thought a professional physicist like yourself would have been able to see that through his electron haze. MPG relates to the car and not the petrol. <facepalm>.The item in question outputs at 5v and the average consumer wants to know what the real world capacity of it is without having to convert between voltages. In saying that, if it can only charge a 3.85v battery with a capacity of 3000mah 4.6 times then it's a piece of junk. Unless you want to justify an inefficiency of c. 50%?


It doesn't sound like you do actually. You're arguing that it should be advertised at lower capacity when they *all* advertise the internal battery rating, which is 25,800mAh at 3.7Wh giving you approx. 96Whr of power. Why should they advertise it as 70Wh or something else when that's not what it is.

The petrol analogy is trying to explain 'inefficiencies' to someone who doesn't understand them. Petrol has a set amount of kJ energy per gallon, and I'm talking about the engine not the car it's in so mass, drivetrain, etc. doesn't matter. You are losing power as all the petrol doesn't get converted to kinetic energy, and all the electrical energy doesn't get transferred here.

'The average consumer' knows that a power bank loses about 30% of it's power as heat and other losses. A Samsung S9 with an 11Wh battery probably can get about the 5-6 charges off this, assuming you turn it off so it's not losing power as you charge it.

How I am I the 'ego rider' (whatever that is) you're the one trying to get the entire industry to redefine power bank standards reporting because it doesn't fit with your of what's right - that's the ego.
Edited by: "plewis00" 4th Oct
plewis0004/10/2019 15:43

It doesn't sound like you do actually. You're arguing that it should be …It doesn't sound like you do actually. You're arguing that it should be advertised at lower capacity when they *all* advertise the internal battery rating, which is 25,800mAh at 3.7Wh giving you approx. 96Whr of power. Why should they advertise it as 70Wh or something else when that's not what it is.The petrol analogy is trying to explain 'inefficiencies' to someone who doesn't understand them. Petrol has a set amount of kJ energy per gallon, and I'm talking about the engine not the car it's in so mass, drivetrain, etc. doesn't matter. You are losing power as all the petrol doesn't get converted to kinetic energy, and all the electrical energy doesn't get transferred here.'The average consumer' knows that a power bank loses about 30% of it's power as heat and other losses. A Samsung S9 with an 11Wh battery probably can get about the 5-6 charges off this, assuming you turn it off so it's not losing power as you charge it.How I am I the 'ego rider' (whatever that is) you're the one trying to get the entire industry to redefine power bank standards reporting because it doesn't fit with your of what's right - that's the ego.


Nothing wrong with having an industry be honest about the facts around its products - just as the car industry had to be forced to be.

Your petrol analogy is nonsense because its not the petrol that's inefficient it's the car(engine, drive train et al) The petrol loses no energy as it is transferred to the vehicle's fuel tank via the pump. The car in your analogy is the phone.

Now if you want to use liquid fuel analogies, this is the equivalent of measuring the size of a fuel tank in American gallons while giving mpg for imperial gallons. The consumer should not have to make a conversion.

Let's taken it even further and measure a litre of milk in frozen state for advertising but sell as a liquid. Small percentage difference but misleading all the same.

If this item outputs at 5V there is no difficulty in suppling the capacity (theoretical or not) at that voltage. If it had an output of 3.7v I'd have no problem.

And if the average consumer was aware of the necessity to calculate capacity between voltages with a power bank there would be no need for Internet based explanations.

It's just an unnecessarily misleading claim and because manufacturers have been doing it does not justify the continuation of it.

And the claim around the Samsung S9 charging capability is made by the seller, not by me. Since the Samsung battery is only 3.85 volts even 5-6 charges is an unacceptable inefficiency.

Now you can park your ego for the day.
worthinger04/10/2019 16:11

Nothing wrong with having an industry be honest about the facts around its …Nothing wrong with having an industry be honest about the facts around its products - just as the car industry had to be forced to be. Your petrol analogy is nonsense because its not the petrol that's inefficient it's the car(engine, drive train et al) The petrol loses no energy as it is transferred to the vehicle's fuel tank via the pump. The car in your analogy is the phone. Now if you want to use liquid fuel analogies, this is the equivalent of measuring the size of a fuel tank in American gallons while giving mpg for imperial gallons. The consumer should not have to make a conversion. Let's taken it even further and measure a litre of milk in frozen state for advertising but sell as a liquid. Small percentage difference but misleading all the same. If this item outputs at 5V there is no difficulty in suppling the capacity (theoretical or not) at that voltage. If it had an output of 3.7v I'd have no problem. And if the average consumer was aware of the necessity to calculate capacity between voltages with a power bank there would be no need for Internet based explanations. It's just an unnecessarily misleading claim and because manufacturers have been doing it does not justify the continuation of it. And the claim around the Samsung S9 charging capability is made by the seller, not by me. Since the Samsung battery is only 3.85 volts even 5-6 charges is an unacceptable inefficiency. Now you can park your ego for the day.


They are being honest. The battery inside is 25800mAh at 3.7V. It won't have a 3.7V output because it wouldn't adhere to USB standards and nothing would charge using this...

5-6 charges of an S9 is approximately 70% efficiency and that's fine.

'Park my ego' - you're the guy trying to push water uphill instead of admitting you got it wrong
Oh, and note that I voted the deal hot for the price. Its the bullshit I don't like.
worthinger04/10/2019 16:17

Oh, and note that I voted the deal hot for the price. Its the bullshit I …Oh, and note that I voted the deal hot for the price. Its the bullshit I don't like.


Good. It is a decent price. And I think everyone knows what you mean but I am just saying, they're not being dishonest or lying.

I mean, I don't like how manufacturers call the flash RAM storage on phones 'ROM' which always meant 'read-only memory' but I'm never going to change it. Almost all power banks get 60-70% efficiency (if they aren't fake) so that's the figure to work off.
worthinger04/10/2019 13:19

Not sure about the maths of this one.Claims to charge and S9 4.6 times, …Not sure about the maths of this one.Claims to charge and S9 4.6 times, but that's 3500 battery: 3500*4.6=16100.Where's my other 2.75 charges?


Power banks are sold with the mAh rated at 3.7V, but it discharges at 5V. So in this case it is 3.7 x 25800 / 5 = 19,092mAh @ 5v discharge in the absolute best conditions. There are other factors like temperature etc that can affect capacity, but this is one of the things you need to deal with when buying power banks.
worthinger04/10/2019 13:45

No. Its about the capacity of the battery not the speed of charge.With a …No. Its about the capacity of the battery not the speed of charge.With a 3000mah battery you would expect to be bake to charge it 8.5 times with this item if its true capacity is 25800mah.I'm just sceptical of the claims often made for this type of item. What's the point buying it if it only has c60% of the claimed capacity?


I think you answered your own question when you quoted the link.

The process itself is inefficient. The internal battery is the stated capacity, but the process of conversion from 3.7V to higher output voltages and the generation of heat, etc. means that you'll never get 100% efficiency.

Speed of the charge does come into play too. The faster the charge, generally the less efficient the process is. This goes back to higher output voltages somewhat though.
the__cat04/10/2019 16:34

I think you answered your own question when you quoted the link.The …I think you answered your own question when you quoted the link.The process itself is inefficient. The internal battery is the stated capacity, but the process of conversion from 3.7V to higher output voltages and the generation of heat, etc. means that you'll never get 100% efficiency.Speed of the charge does come into play too. The faster the charge, generally the less efficient the process is. This goes back to higher output voltages somewhat though.



HacKage04/10/2019 16:32

Power banks are sold with the mAh rated at 3.7V, but it discharges at 5V. …Power banks are sold with the mAh rated at 3.7V, but it discharges at 5V. So in this case it is 3.7 x 25800 / 5 = 19,092mAh @ 5v discharge in the absolute best conditions. There are other factors like temperature etc that can affect capacity, but this is one of the things you need to deal with when buying power banks.

Here is the spec for the item:

38605951-HXTF3.jpg

No mention of 3.7v.

25800 @ 3.7v would be easy to place there.

19000 @ 5v would be equally easy

End of story.
Looks like a good deal. I have an EC technology power bank, 22400mAh. Had it a few years now. Use it a lot and its still going strong. Heat added.
HETTP Power Bank, Portable Charger【25800 mAh Newest Version】 High Capacity Battery Pack, Compact External Battery with 2 Port Output with LED Status Indicator, Compatible with Phone and Tablet amazon.co.uk/dp/…QET

Isn't this a better deal?
worthinger04/10/2019 16:46

Here is the spec for the item:[Image] No mention of 3.7v.25800 @ 3.7v …Here is the spec for the item:[Image] No mention of 3.7v.25800 @ 3.7v would be easy to place there.19000 @ 5v would be equally easy End of story.


Because Li-ion battery chemistry is always 3.7V (or thereabouts). 19000 @ 5V would be technically wrong and should definitely not be put in there... because there is no 5V battery. You would rather they quoted 96Whr but after efficiency you'd get roughly the equivalent of 70Wh.

FMCHAOS04/10/2019 17:00

HETTP Power Bank, Portable Charger【25800 mAh Newest Version】 High …HETTP Power Bank, Portable Charger【25800 mAh Newest Version】 High Capacity Battery Pack, Compact External Battery with 2 Port Output with LED Status Indicator, Compatible with Phone and Tablet https://www.amazon.co.uk/dp/B07RPVB2MB/ref=cm_sw_r_cp_apa_i_CX2LDbR49ZQETIsn't this a better deal?


Yes it is if you don't need the mirror finished top - which really no-one does.
Edited by: "plewis00" 4th Oct
worthinger04/10/2019 16:46

Here is the spec for the item:[Image] No mention of 3.7v.25800 @ 3.7v …Here is the spec for the item:[Image] No mention of 3.7v.25800 @ 3.7v would be easy to place there.19000 @ 5v would be equally easy End of story.


Oh dear.

The internal battery's specification is the true capacity. The charge capacity at other voltages is not an absolute figure and can't therefore be provided.

End of story.
worthinger04/10/2019 16:46

Here is the spec for the item:[Image] No mention of 3.7v.25800 @ 3.7v …Here is the spec for the item:[Image] No mention of 3.7v.25800 @ 3.7v would be easy to place there.19000 @ 5v would be equally easy End of story.


But why would they do that when literally nobody else does? They'd be shooting themselves in the foot.

If you want to enact industry wide change, a HUKD powerbank deal is not the place to do it. Plus actually aim for something meaningful like watt hours.
Optimus_Toaster04/10/2019 17:01

But why would they do that when literally nobody else does? They'd be …But why would they do that when literally nobody else does? They'd be shooting themselves in the foot.If you want to enact industry wide change, a HUKD powerbank deal is not the place to do it. Plus actually aim for something meaningful like watt hours.


Indeed it would be more accurate to use Wh when describing energy transfer process.

Accuracy is all i want. I'm not interested in whether or not every one is being misleading as that doesn't make it right - shooting yourself in the foot or not.
FMCHAOS04/10/2019 17:00

HETTP Power Bank, Portable Charger【25800 mAh Newest Version】 High …HETTP Power Bank, Portable Charger【25800 mAh Newest Version】 High Capacity Battery Pack, Compact External Battery with 2 Port Output with LED Status Indicator, Compatible with Phone and Tablet https://www.amazon.co.uk/dp/B07RPVB2MB/ref=cm_sw_r_cp_apa_i_CX2LDbR49ZQETIsn't this a better deal?


I would say yes.as it's basically the same but cheaper.

It does mention 3,1A output in blurb but not in pics.
plewis0004/10/2019 15:23

. Is the £3 voucher gone?


Apologies, didnt see voucher, and its not stated in the post
dealdelver04/10/2019 17:33

Apologies, didnt see voucher, and its not stated in the post


It’s fine. I wasn’t trying to rub your face in it I just wanted to show you where it was! But the Lightning Deal is probably better still.
plewis0004/10/2019 17:38

It’s fine. I wasn’t trying to rub your face in it I just wanted to show you …It’s fine. I wasn’t trying to rub your face in it I just wanted to show you where it was! But the Lightning Deal is probably better still.

Never thought that at all. Info will help others, who are not so observant. 😄
FMCHAOS04/10/2019 17:00

HETTP Power Bank, Portable Charger【25800 mAh Newest Version】 High …HETTP Power Bank, Portable Charger【25800 mAh Newest Version】 High Capacity Battery Pack, Compact External Battery with 2 Port Output with LED Status Indicator, Compatible with Phone and Tablet https://www.amazon.co.uk/dp/B07RPVB2MB/ref=cm_sw_r_cp_apa_i_CX2LDbR49ZQETIsn't this a better deal?


yes its a better deal i just made it in time, i got £5 off voucher so it made it just over £11 thanks
worthinger04/10/2019 17:19

Indeed it would be more accurate to use Wh when describing energy transfer …Indeed it would be more accurate to use Wh when describing energy transfer process. Accuracy is all i want. I'm not interested in whether or not every one is being misleading as that doesn't make it right - shooting yourself in the foot or not.


But they are being accurate, you are getting 25,800mah at 3.7v.
srem04/10/2019 23:28

Too good to be true at £15? https://www.amazon.co.uk/dp/B07S8Z252T


Looks good. Plenty of positive reviews as long as they are legitimate one's
David_Livesey05/10/2019 00:01

Looks good. Plenty of positive reviews as long as they are legitimate …Looks good. Plenty of positive reviews as long as they are legitimate one's


Hi, see my previous post, the product has an F for fakespot rating which is poor.i checked some of the reviewers and they look fake to me. I,E, multiple reviews on similar products in a very short period of time.....
sheepdognwolf05/10/2019 05:54

Hi, see my previous post, the product has an F for fakespot rating which …Hi, see my previous post, the product has an F for fakespot rating which is poor.i checked some of the reviewers and they look fake to me. I,E, multiple reviews on similar products in a very short period of time.....


I think they were referring to my link which gets a B
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