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RAVPower Solar Charger 20000mAh Portable Charger £16.89 Sold by Sunvalleytek-UK and Fulfilled by Amazon
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RAVPower Solar Charger 20000mAh Portable Charger £16.89 Sold by Sunvalleytek-UK and Fulfilled by Amazon

£16.89£29.9944%Amazon Deals
15
Posted 18th Jan

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

Built For All Eventualities: Durable and sturdy, the portable charger simultaneously charges 2 devices via dual 5V/2A USB output ports
Extensively Tested Charging Capability: 20000mAh large capacity battery can recharge an iPhone X 6 times, an iPhone 8 7 times, & Huawei Mate 20 3 times
Solar Panel for Unlimited Recharging: Charge via sunlight with 5V/300mA 7.6*4.0*1.0 inch solar panel
Super Bright LED Light: Built for outdoor exploration, the charger doubles as a powerful torch
Comprehensive Safety Features: Prevent overcharge, overvoltage and short circuiting with this CE, FCC, and RoHS certified power pack
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Omg! What about all those solar lights they have batteries they must explode aswell or maybe I missed all the news about them.... look buy it as a battery bank it's good at that price point had mine now 2 years it has been used in the garden and charged in windows as well if you worried about all possible outcomes we would never leave the house.
Cold for all the right reasons as have been stated over & over before.

You don't super-heat batteries unless you want short life & trouble!
You don't superheat batteries on a sun filled environment that is BLACK & colour absorbing, ..unless you want trouble.
You don't buy these unless you are dumb because the ability of the solar panel is so backward & cheap compared to a decent panel that it takes forever in the cooking sun to fill the batteries you are subsequently baking!

"novelty cracker toy".
pwel18/01/2020 12:36

Still a good price for the capacity, Im tempted to buy it just to try it …Still a good price for the capacity, Im tempted to buy it just to try it myself if the solar charging really works, otherwise I ll be left with one of the biggest HUKD enigmas unsolved...


If it charges, say, an iPhone XS 4.5 times for 20000 mAh, thats 4400mAh per charge.

If it would take a week to charge fully via solar, let’s assume that’s 70 hours of sunlight, ie around 280mAh per hour...

so you should be able to charge an Xs to 50% with a full days sun.

As it’s so cheap and waterproof and rugged, even if the solar but was 100% sh*te, which it won’t be, I bought it anyway.

Allow it.
15 Comments
Cold for all the right reasons as have been stated over & over before.

You don't super-heat batteries unless you want short life & trouble!
You don't superheat batteries on a sun filled environment that is BLACK & colour absorbing, ..unless you want trouble.
You don't buy these unless you are dumb because the ability of the solar panel is so backward & cheap compared to a decent panel that it takes forever in the cooking sun to fill the batteries you are subsequently baking!

"novelty cracker toy".
Agreed. Well said.
That's your opinion Mr Gus. Vote on the deal price not your opinion as it has good reviews which negate yours
Batteries when exposed to hot temperatures can explode, so heat the batteries in the sun to charge them. Hmmm :/ :/ :/
Still a good price for the capacity, Im tempted to buy it just to try it myself if the solar charging really works, otherwise I ll be left with one of the biggest HUKD enigmas unsolved...
Edited by: "pwel" 18th Jan
Omg! What about all those solar lights they have batteries they must explode aswell or maybe I missed all the news about them.... look buy it as a battery bank it's good at that price point had mine now 2 years it has been used in the garden and charged in windows as well if you worried about all possible outcomes we would never leave the house.
pwel18/01/2020 12:36

Still a good price for the capacity, Im tempted to buy it just to try it …Still a good price for the capacity, Im tempted to buy it just to try it myself if the solar charging really works, otherwise I ll be left with one of the biggest HUKD enigmas unsolved...


If it charges, say, an iPhone XS 4.5 times for 20000 mAh, thats 4400mAh per charge.

If it would take a week to charge fully via solar, let’s assume that’s 70 hours of sunlight, ie around 280mAh per hour...

so you should be able to charge an Xs to 50% with a full days sun.

As it’s so cheap and waterproof and rugged, even if the solar but was 100% sh*te, which it won’t be, I bought it anyway.

Allow it.
Hypermanic18/01/2020 12:22

That's your opinion Mr Gus. Vote on the deal price not your opinion as it …That's your opinion Mr Gus. Vote on the deal price not your opinion as it has good reviews which negate yours


This was one of the chinese generic give aways for reviews just a couple of years back loaded with fake reviews.
The fact it now has a rav power brand logo means nothing i'm afraid when it comes to heavily flawed design that still brings in the coinage.

& it has been a repeat on big clive videos... youtube.com/use…ger
PS studied & qualified in renewables.
Edited by: "Mr_Gus" 18th Jan
The solar panel is a gimmick, it would take about 16 hours in bright sun just to get about 25% charge. Maybe useful if you go camping or live in a tent.
Bades18/01/2020 13:15

Omg! What about all those solar lights they have batteries they must …Omg! What about all those solar lights they have batteries they must explode aswell or maybe I missed all the news about them.... look buy it as a battery bank it's good at that price point had mine now 2 years it has been used in the garden and charged in windows as well if you worried about all possible outcomes we would never leave the house.


Not quite the same comparison, solar lights usually have a Ni-Mh battery, these are far more temperate tolerant and can typically safely operate up to 95 degrees c, plus solar lights usually have some space between the solar panel and the battery, much less heat transference from solar panel/casing to battery.

This solar compact charger has the solar panel and batteries packed in tight, the heat from the sun into the panel and case will likely transfer heat into the internal battery pack, Lithium batteries need a safety circuit to prevent thermal runaway which can result in batteries catching fire (note 7 anyone?). Lithiums don't like getting hot...putting this into direct sunlight is not ideal.

A fold up solar travel panel plugged into a battery pack would be far more sensible if you were out in the wilderness. As a power bank this item might be fine but the solar panel is just a gimmick, assuming it's even connected and working.
Edited by: "spannerzone" 18th Jan
Well, for holidays in sunny places and where electricity is a luxury.

Can it be charge as a normal powerbank?
Edited by: "Pokora" 18th Jan
Mr_Gus18/01/2020 11:47

Cold for all the right reasons as have been stated over & over before.You …Cold for all the right reasons as have been stated over & over before.You don't super-heat batteries unless you want short life & trouble!You don't superheat batteries on a sun filled environment that is BLACK & colour absorbing, ..unless you want trouble.You don't buy these unless you are dumb because the ability of the solar panel is so backward & cheap compared to a decent panel that it takes forever in the cooking sun to fill the batteries you are subsequently baking! "novelty cracker toy".


I should be on the other side of the ocean right now...

How dare you!
Pokora18/01/2020 21:53

Well, for holidays in sunny places and where electricity is a luxury.Can …Well, for holidays in sunny places and where electricity is a luxury.Can it be charge as a normal powerbank?


Nope buy a proper small fold up solar panel set, stick it up orientated towards the sun, keep re-orientating it to maximise power every hour / couple of hours with your powerbank / camera / phone in the shade below it.

DON'T cook batteries, least of all on a tiny "stuck in the sun" solar gizmos like that that experience with / damns the reputation of other good solar capable design.

Solar panels are like a cup of tea, you've got to know how to use it (photovoltaics) properly in order to get half decent results.
At least with a small fold up set you can fit an in line volt / amp reader to quickly understand where, how & when you should be adjusting it to fill a battery or two efficiently compared to point, hope, overcook components & reduce the batteries efficiency in the process.
Mr_Gus19/01/2020 07:38

Nope buy a proper small fold up solar panel set


Do you have any recommendations please?
LV12319/01/2020 10:43

Do you have any recommendations please?


All depends what you want to / NEED to achieve (thus the planning & the available solar insolation (ie sun exposure).
An inline /fixed line : aliexpress.com/ite…fSA (alternates between Amps & volts so you see what position results in best output & absorption.


or seperately: aliexpress.com/ite…cd5


Then a decent, battery bank (depending on what your planned needs are). so whilst I like a 20,000 unit which has say 5 or 6 x 18650 batteries in it a 10,000 is cool for shorter trips / lower requirements.

Always verify the chemistry of the Li-ion cells (there are many variants) & manufacturer, there are codes on batteries for this, you would do better to find Samsung / LG etc rather than no name bundled charger & batteries as really the batteries should be matched to have a very similar max capacity (measured) in order that they are all asked to release the same amount at the same time rather than one bust a gut & die early dragging the capacity down & making the others work harder than they should ...hastening early decline. ..yes this all requires legwork but theoretically gives you a better product & confidence in its potential.

Unless it is categorically designed to charge & release energy at the same time don't assume it can be used in that manner.

charge, then use, then re-charge as soon as possible "in the field"

SOME phones (apple) have acknowledged voltage detection problems so are best charged direct from a banks more consistent flow (but obviously there are always losses to consider), otherwise you simply check under a variety of conditions how your item charges (inline adapter helps show that) as to how long to charge (a bit of trial & error math under certain conditions / directions in different seasons etc).


The hotter a battery runs the more efficiency it LOSES
A cold battery also has problems, so it is understanding the "happy medium" ..giving shade (cool) or insulation (warmth) as well as some rainproofing!


Panel: ..depends on how you travel, where you stay.
for really fast simple set up I like the Eceen (its flip out magnetic clip leg) makes it easy amazon.co.uk/gp/…c=1 ..something along that line is ok for a uk day, it isn't going to charge a laptop (not designed for it, but as a unit you needn't make taut & don't have to unlash rope for works for me.

I have other big ones which I refer to as "Balcony hangers" to slow charge other kit from indirect solar insolation over the course of a day.

ALL things solar beyond novelty require a learning curve even if they are sold as plug & play.

High efficiency panels 20 - 24% obviously have the advantage over something with 14%

Don't charge a panel under glass! / modern glass has UV inhibitors within it whereas solar panels want the full array of the solar ray in all its frequencies in order to process them (efficiency).

The smaller the panel the more jiggling you potentially have to do to angle it & keep it in the sun.
Panels need you to understand angle & direction, that angle changes with the season (summer sun is high so shallower angle acceptable, ..midwinter in the uk london the sun only hits LOW so angle of panel needs to be more extreme for the little light we have. (the inline adapter obviously outputs higher numbers of voltage / ampage the better the angle in relation to season, other shadows falling on it etc.

If I could draw you to the detail on this review....
amazon.co.uk/ECE…r=8

Hopefully that will allow you to understand, "pick & mix" some kit. (eceen are available via ali express & the likes for example).

Don't forget some high quality cables connectors to improve the flow of energy not hinder it.
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