![]() Actually, it will take longer, because when the battery is nearly full, the charging rate will be reduced to less than 500 mA rate. For example, if you use a charger that actually pushes 500 mA charging rate into a nearly-dead battery with a 1100 mAH capacity, it will take 2.2 hours to charge it fully. You'll never find that on a charger, but you will find that on a battery to specify its maximum stored charge quantity. The total QUANTITY of charge pushed into the battery is that rate times the time of operation, usually spec'd as mAH - in words, milliAmp - Hours. Amperes is the RATE of current flowing into the battery to charge it. You seem to have misunderstood the specs for QUANTITY of charge. BUT that may well mean that if you charge TWO AA batteries, they must share the 500 mA charging rate, so each will be charged at a rate of 250 mA, which is only 1/4 the rate of the charger on the right. As far as the number of batteries in a group being charged, I'd guess that the one on the right is wired always to charge two identical batteries in series (or two pairs for a total of four), whereas the one on the left is wired so that all charging slots are in parallel. Lead image by Danilo Alvesd used under Creative Commons.Yes, the charger on the right can push higher currents into batteries to charge them faster. If you're looking to invest in some lithium batteries any time soon I would check this video out first. Smartools, Maxlithium, and AmpTorrent are some of the batteries you'll have probably heard of, as well as many other brands that may be new to you. This is a great reminder that the price of an item is not always the most accurate indicator of quality. Towards the end of the test, it boiled down to one of the cheapest versus one of the most expensive brands. Todd went on to test the batteries in a "real world" environment by using handheld fans to see which would be the last one standing. Since watching Project Farm's last battery video, I have become much more skeptical about what the battery companies claim. ![]() It will probably not come as a surprise to learn that almost all of the batteries fell short of what the companies claimed they could hold. Everything from traditional chargers to various docks, to USB ports on the side of the batteries themselves.Īll the batteries were tested for capacity with an industry-standard battery tester and the results were compared to their advertised capacity. The various types of chargers also came as a surprise too. ![]() I know I have a few devices which I have to struggle with to get some brands of AA battery inside. This information brought up some interesting insights such as not all the batteries were the same size. This last point can be a deal-breaker if you plan on traveling light or don't have much space in your bag. As a bonus in this video, not only do we get the typical capacity tests, but we are also given important details such as diameter, weight, and type of charger for each battery. He also provides an update in this video to his NiMH AA battery test which has been running for the last two years.įor those who have not seen a Project Farm video before, Todd does a great job at being very methodical and fair in his testing. Thankfully for us, Project Farm over on YouTube is back to give us an answer to this question. As more and more companies enter the battery market, it can be difficult to know which brand you should carry in your camera bag. If you have no power you have no pictures. One area I would never compromise on is batteries. There are many shortcuts photographers can make when buying gear if funds are low.
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