Introduction: Make Your Own Rechargeable Battery
Batteries. Needed for just about every electronic project, electronics revolve around them. But think about it, What happens once they lose their power?We throw them aside. These batteries are building up in our landfills, so I set myself to find out how to reuse them.This project is very environmentally beneficial, as it takes a dead battery and turns them into a new one, preventing the creation of electronic waste. The possibilities are endless on this concept (stronger batteries, tiny batteries) and just think of what it would be like if everyone on this planet was able to recycle old batteries.Just we need the electronic waste to be turned into a new battery.The batteries are very small, and to power bigger things, You may need to make more and connect them.This can be called the second version of DIY Battery. But this one is rechargeable and is made from waste just like the earlier one .
Step 1: Waste Required to Make This Battery
For this you need :-
- old discarded AA sized batteries (2x)
- small container
- precious water
- a pair of pliers
- alum crystal
- salty water
Only these things are required to make this .
Step 2: Strip Off the Cell
Take dry cell and strip it off as shown in the figure . Don't use fire because it can cause explosion. From this we don't just need the carbon rods but also we need the manganese dioxide found as black powder in dry cells.
Step 3: Taking Out the Carbon Rod
Use pliers to take out the carbon rod from the center of the dry cell.Once its off, you will see the top of the carbon rod, slowly pull until the carbon rod is out.we don't need only one carbon rod so, we have to open two dry cells and hence we will obtain two carbon rods.Most of the dry cells they consist of a Carbon Rod (what we need) surrounded by moist electrolyte paste.
Carbon rods will act as anode and cathode not alone but coated along with manganese dioxide .
Step 4: Taking Out Magnesium Dioxide
Use a battery that don't indicates that it is alkaline instead use the ordinary 1.5 v dry cell . DON'T USE ALKALINE BATTERY .Carbon Zinc is much safer to get the MnO2.....
Alkaline Manganese has about 11% KOH concentration which really hurts your fingers.. and if you get it into your eyes, it could blind you.... I got something of it onto my fingers and it hurted them ! ;).That worked really good! I need to get some carbon fiber cloth to try the formula out on. The increased surface area should really help. I did some research about taking apart an alkaline battery to get the MnO2 and decided that a cheap carbon zinc was an easier and safer way to go. It is just messy.Don't throw the cell after taking out the carbon rod . Now pour the black powder on any smooth and clean surface . Wear gloves while doing this . We need a tablespoon of manganese dioxide which is to be coated on carbon rods .
Step 5: Coating
The carbon rods are already coated with mnO2 but we will coat it again to make our battery more powerful . You can see the difference between coated and not coated one in the picture . It is necessary for a battery to be made rechargeable .Don't forget to coat the carbon rods with charcoal.
Step 6: Inserting Electrodes
Drill a whole the size of the carbon rod so it fits snug. Place the carbon rod into one of the hole leaving about 1/2 an inch sticking out from the top.Repeat it for the other carbon rod.
Step 7: Joining Wires
Seal the two holes so no water can pass through. Also glue the two wires to the tops of the rods sticking out
The carbon rod is now +and - too. Just take two wires and connect them to the two electrodes . Use glue to make it water proof .
Step 8: Making Electrolyte.
Pour some water in container and then add some powder made from alum crystals to the water . Mix It properly . Don't make it saturated . The water should seem to be transparent . You can also mix some mnO2 to it . It will increase its capacity to be charged.
Step 9: Done!
The signal is very weak, But if you make more and connect them, you can make them stronger.
This is only a starting to make rechargeable batteries at home . This rechargeable battery will decrease the creation of waste by disposable batteries.
The voltage is : 0.933 v
It needs to be recharged for an average for 14 hours to charge fully .
It is just a step to prevent waste generation and hence reducing the pollution.
Please vote if you like !