Battery Usb Lumintop 3400 Mah
I have received a couple of Usb Lumintop of 3400 mAh batteries, and they have found me quite interesting, almost suitable for some applications, so I thought to make a presentation.
Batteries come in a blister pack very well protected, also provide a lot of information, some thank you, because I have other brands batteries very reputable that is sensed, but is not known for certain that they carry inside.
On the front we find information on their technical characteristics (capacity, 3400 mAh, nominal voltage and WHr), they tell us that they have protection from overload/basic function, that are loaded via micro USB which are suitable for peripherals requiring high discharge capacity and supports more than 500 complete cycles of loading and unloading. The same information, the country of manufacture, and safety in relation to their use and storage usual suggestions we find on the back of the blister.
Another detail which I am personally grateful is the blister with a stippling that greatly facilitates its opening. Pull the tab and point. In a few seconds we have extracted the batteries of your blister.
The battery has a protective transparent cover on a white cover that has a lot of information silkscreened. At a first glance, we know that we have in our hands the famous Panasonic NCR18650B along with several seals and the information that we have already seen in the blister. On the positive battery is button top, and this is golden in color. In the positive leads also two microled (red and green) whose function is to indicate when the battery is charging (red), or is loaded, (green). The hole micro-usb battery charging system is also located in this area.
The positive pole we found two security holes so that gases from the battery can be expelled in case of problems. The brand logo is engraved at the negative pole.
The first thing I’ve done to the out of the blister is to check if he came in charge of storage. The voltage was slightly above 3, 5v.
The next thing that surprised me was his size, had a great length. I decided to compare them with other NCRB and their cousins the GA.
As you can be seen in the photo are significantly longer, and at this point I started to fear that they would not enter well in common flashlights that believed that they would be very useful (S2, S2+, models C8). However they enter perfectly into these models, without having to force.
The following was to proceed to see how they were loaded. I tried a couple of micro cables usb, which entered fully into the hole, firm, but without force.
Another curiosity is to know which would be your load speed, for batteries with a significant capacity, and a trickle charge could turn the process into an eternity. The circuit has a maximum load of 750 mAh, speed which I think is not bad. Just connect the cable to the USB plug starts charging the battery and lights the red indicator, remained so throughout the charging process.
As we can be seen in the sequence of images below, as the battery will be charging there comes a time in which circuit decreases the loading speed to carry out the process properly.
When the battery is full, load short circuit- and the green light is on. Checked voltage see cutting occurs correctly at 4.2 v
To inquire more about this Lumintop battery, I decided to find out which would be if you could load it into a current charger due to its size. Do they enter well?. I tried in 4 models of cargador-analizador very popular in these times that run.The results were positive in 4. Also in the Skyrc we can see that the voltage was at 4.20.
And in order to check its capacity, I decided to do a download in the Skyrc test.To 0.5 A and programming cut to 2.7, something that should not happen due to the battery protection.
I could not be at the final moment of the process, but it would ensure that the protection circuit cut in 3v (more than 3200 mAh), something that can guess with the data that it provides us with the charger already with the battery at rest, with a voltage of 3.23. Displays a graph of the discharge (the software has many bugs, it can have any data that calls attention.) Does not lack that you ask).
I removed the battery and went to put on the charger to make it a faster load on this occasion, in order to see if cut correctly. Interestingly the protection circuit cut 4, 15v at rest. This gives me to think that this circuit is not he who acts when the load produced by USB, so hence if the 4.2.
The only thing I had to try was their ability to discharge. Obviously the battery with protection circuitry have more internal resistance. The NCR18650B are also of high discharge, but in facet is, today there are the most competitive, not ceasing to be therefore a battery very suitable in drainage/capacity relationship for a high percentage of current headlights. Seen target audience for which this type of batteries would be suitable, the only question that I had is if your drainage would be suitable for the current headlights today. I decided to compare the Lumintop with an NCRB without protection circuit, in the S2 2800 of the images of the first convoy. The result is equivalent in both (did not use FAT cables in the measurement, but the tester). The first image is of the Lumintop.
Thus, this battery is recommended?. In terms of quality and care to detail of its construction, I dare to say Yes. In fact, and I prepare for the rain of eggs and tomatoes, to many desmanotados that ask me or ask for headlights Council think are ideal. Why?, because I put an example. A few days ago an acquaintance that I recommended a model that uses 16340 comes saying that the battery will not charge you. It turns out that he left the battery in flashlight throughout the summer, and also the last day which then gave him cane. The battery arrived to 0 Volts. I managed to resuscitate him battery, but if do you a test it has 60% of its original capacity… for this type of people who use flashlights and batteries with little care, this is far from ideal, in my opinion better than a battery with a cumbersome charger. Interestingly most of them that I know in flesh and blood that have a flashlight, are of this type of people. It is a tool that they use and if you break another.
For that here we move, protection circuits are one nuisance more than a benefit. We take care and also have animal lanterns that ask more discharge. We have cargadores-analizadores who do many things. For this beyond the curiosity of trying one, I would say without a doubt that not. PCBs increase the size of the battery, making it difficult to use in some models, and above all, to increase the internal resistance. We also say, and in this I agree only partially, cutting a (this does not complain when the flashlight does ) and share my experience the assertion that is usually done to spoil the circuit for the protection of a “churrifire” protected… isn’t that the circuits are broken… The best is that we bought a M*.
My experience, and although my protected will be 5% of my battery, it is that not have been broken me the PCB in any model of brand (of course that cases there are and I know), you may be lucky, I do not deny, but I’ve seen die more quality batteries by forgetting them in a flashlight with some parasitic consumption than broken circuits (and when I say die I say losing much of its cargo and drainage capacity).