The Author's Experience with the Solar Bank Power Bank and the Brand Power Bank

I recently had the opportunity to test two power banks, one a solar bank and the other a brand power bank. The solar bank was advertised as a product that could charge my phone using solar energy alone, while the brand power bank offered more conventional features.

The solar bank proved to be a disappointing product, with an output of around 900 new amps, which is nowhere near its claimed rating of up to 2 amps. It starts out slow and only reaches this low output when fully charged. I was also told by the manufacturer that it only delivers what they promise, but I think they were being dishonest about its actual capabilities.

In contrast, the brand power bank delivered on its promises, with an output of around 1 amp from its 2 amp ports. However, I did find that the solar bank could deliver up to 3.2 amps per port before shutting down, and it was also capable of delivering up to 2.2 amps per port.

To get a better understanding of how efficient these power banks were, I decided to take them apart and test their converter circuits. The solar bank was relatively easy to disassemble, while the brand power bank required more effort due to its case being damaged during the process.

By reordering the positive wires from the circuit boards and replacing them with jumper wires, I was able to measure the output and input voltage and current for both power banks using my multimeter. The solar bank had an average efficiency of around 85%, while the brand power bank had an efficiency of around 90%.

Next, I decided to test the polycrystalline solar panel that came with the solar bank. Unfortunately, it proved to be a worthless addition to the product, with an output of only 35 milliamps when trying to charge a battery completely. This means that it would take around 60 days of continuous sunshine to fully charge the 50,000 milliamp hour batteries.

However, I also discovered that there is a charge state where the solar panel actually drains the batteries, which is quite useful for people who want to keep their batteries topped up while still charging them from solar energy.

Finally, I decided to test the capacity of both power banks by charging them completely and then removing the battery packs. Using my variable power supply, I was able to simulate the batteries and measure the cutoff voltage of the circuits. The solar bank reached a cutoff voltage of around 3.2 volts after 1.5 hours with a constant load of 1 amp, which equals around 1.5 amp hours with five cells in one pack.

In contrast, the brand power bank reached a cutoff voltage of around 2.5 volts after 2.5 hours, which equals around 2500 milliamp hour when using eight cells per pack. This is significantly less than what I expected, but still within the realm of possibility.

Overall, my experience with both power banks was disappointing, especially considering their prices. The solar bank costs $25 and offers a lot of lies, including a useless solar panel and an okay circuit system. On the other hand, the brand power bank promises more features for $39, but only delivers around 20,000 milliamp hour capacity.

In conclusion, I would say that Easy Technology is the clear winner in this comparison, with its decent charging circuit and good deal pricing. If you need new batteries and a reliable charging system, Easy Technology's product may be worth considering. However, if you're looking for a power bank that can charge your phone from solar energy alone, it seems that these products are not yet available.

I hope you liked this video! If so, don't forget to Like, Share, and Subscribe. That would be awesome. Stay creative, and I will see you next time.

WEBVTTKind: captionsLanguage: enin the previous video I demonstrated how useful a power bank can be to use your portable electronics like a hand warmer but sometimes you need a bit more capacity to for example charge up your phone multiple times that is the moment when you bring out the big stuff so in this versus episode let's compare the efficiency to capacity and overall features of twenty two thousand four hundred milliamp hour power bank from ICI technology with a no-name solar power bank with whopping fifty thousand milliamp hours let's get started first of all let's talk about every consumer concerns the looks the brand Bank looks good and black and red and the quality of the plastic enclosure is really nice on the other hand I also like the metal and solar parts of the Abba Bank but the white plastic just looks a bit cheap we also got four LEDs on both gadgets to indicate the charge state and the small 1 watt LED has a torch now let's get technical and see how fast we can charge them up both of them claim that they have a maximum of 2 amps as an input and there is no problem with the EC technology one which files right up to just below 2 amps the solar one does not really like to do that starts out slow and then only reaches around 900 new amps thanks manufacturer for telling me lies I hope they at least tell me the truth about the output capabilities let's hook everything up and hope for one amp output which is of course around 500 milliamps it is and the 2 amp output ports only delivers me roughly around 1 amp maybe they forgot to divide the rating by 2 that would actually make sense the brand power bank does actually deliver what they promise with their 1 amp outputs but I think I reached the maximum charge rate of my phone at the 2 amp output I will need to use my constant load to draw this much current but before that I died so load 1 bridge wire to add a precision current meter which will make the whole measuring part easier I hooked up my USB wire and realize that all outputs of the brand bank can deliver up to three point two amps before shutting down and the solar bank can actually deliver up to two point two amps on each port I guess it is very bad i detecting the correct charge currents now to the interesting part let's open them up the solar bank is super easy to take apart by removing a couple of small screws I guess they have nothing to hide that might be sarcasm the red bank really took forced to take apart and the case cut obviously destroyed during the process but that is okay because I have other plans with the insides now let's test how efficient our converter circuits really is I disorder the positive wire from the circuits and replace them with a jumper wire which I can look up to my multimeter then I connected my constant load set it to around 1 amp and check the output and input voltage and the input current for the solar bank we get an average efficiency of around 85% of course it might change with different battery levels and output currents on the other hand the brand power bank reached an efficiency of around 90% which is a nice difference between those two next let's see how useful this polycrystalline solar panel really is I connected my measuring equipment and positioned my panel nicely so that I get a maximum battery charge current around 35 milliamps so it would take around 60 days of continuous sunshine to charge the whole 50,000 milliamp hour batteries that is just ridiculous and is only a way to trick people into thinking they can charge this whole thing solely by solar energy and the best thing is that there is actually a charge state where it drains the batteries while saying that it's recharging them awesome at the end let's find out the true capacity of those banks I charge them up completely and afterwards remove the battery packs from the circuit then I used my variable power supply to simulate the batteries to find out the cutoff voltage of the circuits and it is apparently around three point to volts afterwards I freed one lithium-ion cell of each pack and started my usual capacity measurement which you should already know from a previous video the solar bank battery reaches three point two volts after around 1.5 hours with a constant load of one amp this equals to around 1.5 amp hour with five of them in one pack it is around 7500 milliamp hour and not 50,000 the brand Bank also went through the same test and reached the cutoff voltage after 2.5 hours that would equal to around 2500 milliamp hour with eight of them inside the bank we get around 20,000 milliamp hour since my test is rather inaccurate and the battery might not be fully charged up through the integrated circuits I would say this is close enough let's summarize this the solar bank offers for $25 a lot of Lies 5 1000 500 milliamp hour batteries a quite useless solar panel and an okay circuits the other one offers wallet promises and with a price of $39 one two thousand eight hundred million power battery only costs around $5 it is a good deal if you need new batteries and you get a decent charging circuit as well easy technology is the clear winner at this time I hope you liked this video if so don't forget to Like share and subscribe that would be awesome stay creative and I will see you next timein the previous video I demonstrated how useful a power bank can be to use your portable electronics like a hand warmer but sometimes you need a bit more capacity to for example charge up your phone multiple times that is the moment when you bring out the big stuff so in this versus episode let's compare the efficiency to capacity and overall features of twenty two thousand four hundred milliamp hour power bank from ICI technology with a no-name solar power bank with whopping fifty thousand milliamp hours let's get started first of all let's talk about every consumer concerns the looks the brand Bank looks good and black and red and the quality of the plastic enclosure is really nice on the other hand I also like the metal and solar parts of the Abba Bank but the white plastic just looks a bit cheap we also got four LEDs on both gadgets to indicate the charge state and the small 1 watt LED has a torch now let's get technical and see how fast we can charge them up both of them claim that they have a maximum of 2 amps as an input and there is no problem with the EC technology one which files right up to just below 2 amps the solar one does not really like to do that starts out slow and then only reaches around 900 new amps thanks manufacturer for telling me lies I hope they at least tell me the truth about the output capabilities let's hook everything up and hope for one amp output which is of course around 500 milliamps it is and the 2 amp output ports only delivers me roughly around 1 amp maybe they forgot to divide the rating by 2 that would actually make sense the brand power bank does actually deliver what they promise with their 1 amp outputs but I think I reached the maximum charge rate of my phone at the 2 amp output I will need to use my constant load to draw this much current but before that I died so load 1 bridge wire to add a precision current meter which will make the whole measuring part easier I hooked up my USB wire and realize that all outputs of the brand bank can deliver up to three point two amps before shutting down and the solar bank can actually deliver up to two point two amps on each port I guess it is very bad i detecting the correct charge currents now to the interesting part let's open them up the solar bank is super easy to take apart by removing a couple of small screws I guess they have nothing to hide that might be sarcasm the red bank really took forced to take apart and the case cut obviously destroyed during the process but that is okay because I have other plans with the insides now let's test how efficient our converter circuits really is I disorder the positive wire from the circuits and replace them with a jumper wire which I can look up to my multimeter then I connected my constant load set it to around 1 amp and check the output and input voltage and the input current for the solar bank we get an average efficiency of around 85% of course it might change with different battery levels and output currents on the other hand the brand power bank reached an efficiency of around 90% which is a nice difference between those two next let's see how useful this polycrystalline solar panel really is I connected my measuring equipment and positioned my panel nicely so that I get a maximum battery charge current around 35 milliamps so it would take around 60 days of continuous sunshine to charge the whole 50,000 milliamp hour batteries that is just ridiculous and is only a way to trick people into thinking they can charge this whole thing solely by solar energy and the best thing is that there is actually a charge state where it drains the batteries while saying that it's recharging them awesome at the end let's find out the true capacity of those banks I charge them up completely and afterwards remove the battery packs from the circuit then I used my variable power supply to simulate the batteries to find out the cutoff voltage of the circuits and it is apparently around three point to volts afterwards I freed one lithium-ion cell of each pack and started my usual capacity measurement which you should already know from a previous video the solar bank battery reaches three point two volts after around 1.5 hours with a constant load of one amp this equals to around 1.5 amp hour with five of them in one pack it is around 7500 milliamp hour and not 50,000 the brand Bank also went through the same test and reached the cutoff voltage after 2.5 hours that would equal to around 2500 milliamp hour with eight of them inside the bank we get around 20,000 milliamp hour since my test is rather inaccurate and the battery might not be fully charged up through the integrated circuits I would say this is close enough let's summarize this the solar bank offers for $25 a lot of Lies 5 1000 500 milliamp hour batteries a quite useless solar panel and an okay circuits the other one offers wallet promises and with a price of $39 one two thousand eight hundred million power battery only costs around $5 it is a good deal if you need new batteries and you get a decent charging circuit as well easy technology is the clear winner at this time I hope you liked this video if so don't forget to Like share and subscribe that would be awesome stay creative and I will see you next time