Just like the majority of top chargers out there, the device stops on its own when the charging is complete without the user having to do it manually. Take Youshiko YC4000, for example. Even though this is definitely an annoying and bothersome routine issue, there's a way to avoid it. However, from time to time, some companies do manage to create the kind of advertisement that doesn't just avoid aggravating their target audience but is even capable of persuading certain people to enjoy it and even look forward to the ad.All of those people in charge of advertisement at Duracell did not choose a racing rabbit as their mascot at random, of course. The amount of energy a rechargeable battery can store is measured in milli-ampere hours, or mAh. Fortunately, professionals at Duracell have been in this business for a long time, so they know what they're doing when it comes to that aspect as well. The AmazonBasics Battery Charger is not only the right solution for home use, this is a perfect choice for those fond of traveling as well. In addition, the retractable AC plug also makes the charger easy to store and transport. Each slot is controlled and monitored independently. You will also find rechargeable battery packs to replace your Laptop Battery, Digital Camera Battery, Camcorder, PDA, smart phone, mobile phone, iPod or MP3 player batteries. But let's pivot a little and start with the model's design. This mode refreshes your rechargeable battery to its maximum capacity by charging and discharging the battery repeatedly until no further increase in the capacity is estimated.Last but not least, there's the test mode that lets you check the rechargeable battery's capacity in mAh/Ah.The model has no issues with any and all AA, AAA / Ni-MH, Ni-Cd rechargeable battery with maximum capacity capping at 3000 mAh.The model's safety mechanisms are nothing new. The model has no issues with odd numbers. Rechargeable batteries offer a cost effective option of using devices which require portable power, as the energy supply is recharged and reused. The trickle charge current maintains the batteries’ power so they do not discharge on their own after the charger stops operating.As important as speed can be, when you're dealing with power and electricity, one of the first things you have to make sure of is that the device is completely safe and secure before you decide to actually acquire one. Using the latter, you'll be able to remove the memory effect that plagues older batteries.Then, there's the refresh mode. Once you’ve worked out what type of battery charger you want, make sure you buy the best rechargeable batteries to put in it. These simple actions will allow you to maximize batteries' performance. On top of that, even though the model comes with 4 AA Duracell rechargeable batteries, the device is capable of powering up all kinds of AA and AAA rechargeable batteries. One of the most alluring things about the BEEWAY PRO D4 is that is capable of identifying and recharging virtually every single type and version of cylindrical batteries, meaning that you won't have to bother with purchasing another charger if some of your batteries happen to be somewhat or entirely different from the other ones. Provided the model is able to effectively and efficiently charge multiple batteries, there isn't much else to ask for, is it? You can charge 1, 2, 3, or 4 batteries simultaneously. After it is done completely charging all of the batteries up, the charger will automatically turn off in order to prevent it from overheating.