Is it possible to recharge aa batteries

Make sure that the power is off, and will use the timer. You want it face-down in case a battery leaks. The electrolyte will leak down, away from the battery holder. Like the video says, you have it on for a short while, and then wait 6 hours. What happens is that the chemical charges, partially, and then the waiting time allows the charge to spread.

Charging also causes gas to build up in the battery. If you see wet liquid around the charger, it means a battery has burst and leaked out electrolyte. Find the broken one, and dispose. The liquid is potassium hydroxide, which is a kind of lye. The white powder is potassium carbonate, a salt.

Some people recommend vinegar, but I would just use water. I couldn't resist! Add a comment. Active Oldest Votes. Chargers that charge 4 x AA or AAA cells usually do so either with All 4 cells with eg negative grounded and separate positive feeds or with 2 x 2 cells in series.

Draw a picture. Example only: 4 x floating chargers at left have mutually isolated outputs. Its 4 batteries in series as the charger sees it , one charger per Pro-toy cell. What got me thinking I can get away with one charger per 4 toy cells if the toy has 4 cells same as the charger is the wording "individually controlled and monitored". Using a "reverse transistor" switch.

That is when voltage is not applied to a 3 pin terminal the current flows as the toy battery compartment was originally designed and when Voltage is applied to the "reverse transistor" switch all 4 batteries become isolated inside the toy.

Once isolated inside the toy I would simply connect 4x2 wire cable back to the charger and make it seamless as far as what the charger can "see".

Perhaps there is such a "reverse transistor" switch? Is this a feasible way? The key point in my system is that the N charger outputs all float wr each other.

So eg if you had a LiIon charger that charge single LiIon cells you could map 2 x such chargers onto two hard series connected LiIon cells. This is a common arrangement in higher spec cameras DSLR etc but they don't give you the cell mid point. OR you could us 1 x 2 cell LiIon charger.

All the "mapping is done by wiring to the battery side sockets. See added diagram. You charge each independently with suitable monitoring and the ability to inject current INTO OR take current out of each internal node. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. You do not also need to worry about it going bad due to age as there is a low chance that it will happen.

Aside from the shelf life, an alkaline battery also boasts of its longer lifespan in comparison to its counterparts so there is no need to replace it too often.

However, it also carries a few flaws, like:. Despite that, alkaline batteries still continue to gain traction nowadays. Charging or recharging alkaline batteries is not highly recommended , although that is possible with the help of a special alkaline charger , which you can use to the rechargeable alkaline. There are several reasons why recharging the battery is not recommended.

One of these is that charged ones can supply only a few recharge cycles. What you get is a dozen of recharge cycles , sometimes even less. This is not the same with a real rechargeable, such as NiMH , since you can also recharge it for hundreds or thousands of times. Alkaline batteries also tend to lose their capacity per charge cycle. This means that each time you recharge the battery, its run time will also go lower.

The rechargeable variety of alkaline batteries also usually features a smaller capacity compared to the real ones as well as NiMH rechargeable batteries. Recharging it will also increase its likelihood of leaking. The good news is that despite the fact that charging alkaline batteries is not recommended, there are still special chargers that you can use to do so.

Note that it is necessary to invest in a high-quality special charger specifically designed to charge alkaline batteries if you insist to do it. You need a charger, which is specifically designed to deal with and handle alkaline batteries.

It also has built-in negative delta V cut-off function and short-circuits protection. This charger is essentially a computer itself, so it can optimize the conditioning and charging cycles for each individual battery. The Maximal Power Charger charges the following battery types:. The ability of this charger to charge different kinds of batteries, including alkaline batteries that are non-rechargeable in the past and the rechargeable alkaline manganese proves its versatility. This battery charger also works great, thanks to its high-speed discharging and charging ports.

Another benefit I noticed about this special charger is that its charging speed is quite fast , so I can assure most users that it is less time-consuming to use. It boasts of its delta cut-off function, which is a great thing because it stops the charging process automatically once the batteries are already full, thereby preventing short circuits.

The features and functions of FC are simple and easy to use. Just like the previous special charger from Maximal, this one is flexible and versatile , too as it can charge a wide range of batteries. You will love its 4 universal charging docks capable of charging different types of batteries. Another advantage of this special charger is that it is capable of simultaneously charging a max of 5 batteries , thanks to its 4 universal ports as well as another one that you can find in the 9V port.

It also features a couple of USB ports that you can use to attach and charge devices. I am sure you will like the LCD screen of this special charger, too, as it can display the level of charge in the battery and its charging status.