what happens to a wet cell battery if its charging reverse polarity
Charging & Discharging the Bombardment with Incorrect and Wrong Connexion
We know that a secondary battery (also known as an accumulator) is a device that converts the chemical energy into electrical energy and stores in it for later on usage. The chemical reactions in secondary cells are reversible in instance of proper battery polarity connectedness instead of reverse polarity.
In other words, the chemical components in the battery can exist reversed (to the original and prior shape) by changing the management of flow of current in the battery. The flow of current in discharging fashion (battery supply power to the connected devices) is opposite in case of charging (external source provides energy to) the storage battery.
There are internal plates in the batteries (lead acid, alkaline etc) known as cathode (positive "+") and anode (negative "-"). For example, the positive plate is Lead per oxide (PbOii) and the negative plate is sponge pb (Pb). A light sulfuric acid (H2And soiv) is used every bit an electrolytic solution in the battery for proper chemic reaction.
The combined chemical reaction in the battery can be written as follows during the charging and discharging (or discharged and charged cell) of atomic number 82 acid bombardment:
Positive PlateNegative Plate Electrolyte Discharge Positive PlateNegative PlateWater
PbOtwo + Pb + 2HtwoThen4 ⇋PbSOiv + PbSO4 +2H2O
Notation:
- PbO2 + Lead + 2H2SOfour = Cell Charged
- PbSOfour + PbSO4 + 2H2O = Cell Discharged
- Whole Equation (Left to Correct) = Belch i.east. discharging activeness
- Whole Equation (Correct to Left) = Charge i.e. charging action
When using a bombardment for both charging and discharging, it is necessary to connect the positive final of source to the positive last of battery and negative source to the negative terminal of battery. OK got it, but what happens if you put batteries the incorrect way? OK, let's know almost the polarity and reverse polarity in the batteries.
- Related Mail: What Happens if a Battery is Continued to the Ac Supply?
What is Polarity & Reverse Polarity in a Bombardment?
Battery Polarity
Polarity ways having opposite physical properties at unlike points. In case of bombardment, the one pole or plate having more than electrons is known as anode or negative (-) final. The other having less number of electrons is known as cathode or positive (+) terminal.
If nosotros connect these both terminals through a conductor having a resistance, the current will offset to flow due to the potential divergence on both points. In other words, the electrons (electronic current volition start to flow from the -Ve last to the +Ve last. The electrical (conventional) electric current flows in the contrary direction i.e. from positive electrode the negative electrode.
Battery Reverse Polarity
Battery reverse polarity is the case when the source (for charging) or load cables are connected incorrectly i.east. source or load Negative to the Positive of bombardment and source or load Positive to the Negative concluding of the battery. Due to the wrong connection, a current may start to flow in the circuit and may crusade some serious injuries and damage to the equipment.
Enough the basic, now come to the point i.e. what happens to a battery if y'all recharge it the wrong way effectually? or what happens when charging a bombardment using contrary polarity with a charger?
There are three scenarios equally follows
- Connecting a battery to the charger with reverse polarity
- Connecting Bombardment to the load with reverse polarity
- Connecting a battery to another battery with reverse polarity
Let'south talk over i by one in detail.
Connecting a Bombardment to the Charger with Reverse Polarity
If by chance, accidentally or intentionally the battery charger (or solar panel, Inverter etc) connected to the wrong way effectually i.e. the charger negative and positive continued to the bombardment positive and negative terminals respectively, the following may occurs:
- The electric current flowing to the battery through the charger may burn out the electronic components inside the charger (if there is no reverse protection is provided by the manufacturer). In short, It may partially or fully damage the charger circuit. If the rating of charger is less than the battery capacity, it would overload the circuit and may turn off the circuit billow to cease the circuit operation. If the rating of charger is greater than the battery capacity, information technology may overheat the bombardment and burn with expulsion.
- It may belch the bombardment with spark or permanently impairment the battery. In other words, the opposite polarity battery connexion, the DC supply would drag electrons from the negative last of the bombardment and push them at the positive terminal. This would gradually discharge the bombardment aforementioned similar in example of a capacitor.
- The heat produced by the reverse polarity in the battery may cause hydrogen gas (ignitable) which may explode the battery casing. The croaky example of the battery may provide a way for acid which may melt the sensitive devices and cause serious injuries too.
For these reasons, wear rubber gloves and spectacles for proper protection while working on batteries.
In addition, there is an exceptional example too where a bombardment may be connected to the incorrect manner.
The bombardment tin be continued to the wrong terminals when it has been fully discharged. Equally the fully discharged battery having 0 volt potential difference acts like an empty vessel (dead battery). In this example, the bombardment positive terminal tin be connected to the negative source terminal and the bombardment negative terminal can exist connected to the positive source concluding.
This is not always the example and wont work for all batteries due to the different pastes/materials and technique used in the batteries. While in onetime batteries, it may work for years simply some of tested experiments reported the less efficiency & capacity, quick drainage and short life of battery. The battery charged with reverse polarity should exist marked interchangeably i.e. the bombardment (+) should be marked every bit (-) and vice versa. To reverse the action as prior, fully belch the (reversed charged) battery and connect it to the right terminals (i.e. negative to the negative and positive to the positive terminals of charger and bombardment respectively).
Over again, wear the rubber gloves and glasses and other safety measures for proper protection while playing with batteries.
Connecting Battery to the Load with Reverse Polarity
The same case i.e. battery connected to the wrong manner but load appliances instead of charger. This may atomic number 82 to the following phenomena:
- Some load may not work properly (i.e. LED or Diodes) which works merely in a single direction or it needs a proper DC supply connectedness to be fully functional every bit anode (-) to anode (-) and cathode (+) to the cathode (+) terminals).
- In instance of vehicles and automobiles, the car battery with opposite polarity may harm the ECU (Engine Control Unit (electronic command board), in automatic vehicles) electronic sensors and Alternator which are little scrap expensive to replace with new ones.
- It may also harm the other components and vehicle wiring systems. If you are lucky by luck, at least the fuses and relays may blow at all due to the opposite current germination.
- The DC clock and analog motors equally load continued to the battery may starting time to rotate in the astern direction.
Nowadays, the modern vehicle manufactures put a reverse polarity protection in the system as it is easy to manage information technology instead of the useless and number of support calls and maintenance. But is it OK and satisfied to give it a attempt? Not at all.
In addition, a fuse or a generic diode (Voltage drop upwards to 0.7V beyond the diode will occur) can exist installed on the positive wire for ane management power supply which acts a reverse current protection.
Connecting a Battery to Another Bombardment with Reverse Polarity
If a battery in the first car is connected wrongly to the battery placed in another machine to charge the second battery through the first one, it may explode and burn or permanently damage the bombardment(ies). The common batteries every bit lead acrid may heat up and melt the internal and external parts in the bombardment. The ignite gas as hydrogen may crack the battery casing with exploration.
In example of a wrong connection of batteries instead of proper series connection, both the batteries will oppose each other hence the result will be equalized charged on both i.e. they volition quickly flatten each other.
It may too cook the jumper cable and insulation connected between the two batteries as it is not designed or rated for a huge corporeality of electric current due to the incorrect connection.
Safety Precautions:
- Please wear safe drinking glass and rubber gloves and other safety measures while working around the batteries and related hazardous equipment.
- Use the proper wiring color codes according to your regional codes for batteries connections.
- The author will not be liable for any losses, injuries, or damages from the display or use of this data or if you try any circuit in wrong format. So please! Exist conscientious because it's all near electricity and electricity is too unsafe.
Now its your plow, please express your feeling and real time experience with the batteries reverse polarity connection in any attribute. We really want to know your taught on this topic.
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Source: https://www.electricaltechnology.org/2020/07/battery-reverse-polarity-wiring.html
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