The difference of battery capacity

A battery that reaches twelve volts but less than 20 ah may not be able to drive.

20ah is the capacity of the battery, not the power. When the current is constant, the larger the capacity, the longer the power can be used.

20ah means that when the battery output current is 20 amps, it can be used for 1 hour. It can also be understood that when the battery output current is 2 amps, 10 hours can be used. That is, the product of current and time is 20.

When the device requires a 20ah high-power battery to drive, the device has a large operating current, and a small-capacity battery may not be able to withstand this large current. If the small capacity battery can withstand the device drive current, it can be driven. Just as you have a dozen batteries connected in series to drive an electric bicycle, it is not possible to drive.

The amount of electricity discharged by the battery under specified conditions (including discharge intensity, discharge current and discharge termination voltage) or the length of discharge time is called battery capacity, and the unit is A·h or A·min. A car battery is a reversible DC power source that converts chemical energy into electrical energy and electrical energy into chemical energy. It is connected in parallel with the generator.

It supplies power to the starting system and the ignition system during engine start.

When the engine is stop or low idle, it supplies power to the car's electrical equipment.

When there is a demand for electricity exceeding the output of the charging system, the current is supplied by this for a limited period of time.

The battery also absorbs the transient overvoltage in the circuit to keep the voltage of the automotive electrical system stable and protect the electronic components.

The battery not be used for a long time, it will slowly discharge itself until it is scrapped. Therefore, the car should be started once every certain time to charge the battery. Another method is to pull out the two electrodes on the battery. It is necessary to remove the positive and negative electrode wires from the electrode column. First, unplug the negative wire or remove the connection between the negative electrode and the chassis of the car. Then remove the other end with the positive mark (+). The battery has a certain service life and will be replaced in a certain period of time. The same order should be followed when replacing, but when the electrode wires are connected, the order is reversed, first connected to the positive electrode and then to the negative electrode.

When the ammeter pointer indicates that the storage capacity is insufficient, it should be charged in time. The storage capacity of the battery can be reflected on the instrument panel. Sometimes the power is not enough on the road, and the engine can't start. As a temporary measure, you can ask other vehicles for help. Use the battery on the vehicle to start the vehicle, connect the negative and negative poles of the two batteries, and connect the positive pole to the positive pole. .

The density of the electrolyte should be adjusted according to the standard according to different regions and seasons.

Distilled water or special rehydration solution and nano-carbon sol battery activator should be added when the electrolyte is deficient. Never use pure water instead. Because pure water contains a variety of trace elements, it will have an adverse effect on the battery.

Uninterrupted use of the starting opportunity when starting the car causes the battery to be damaged due to excessive discharge. The correct method of use is to take no more than 5 seconds for each time the car is started, and the interval between starts again is not less than 15 seconds. In the case of multiple starts and still not in the car, you should find the reason from other aspects such as circuit, ignition coil or oil circuit.

Always check the small holes in the battery cover for ventilation when driving daily. If the small hole of the battery cover is blocked, the generated hydrogen and oxygen will not be discharged, and when the electrolyte expands, the battery case will be broken and the battery life will be affected.

Check the positive and negative levels of the battery for signs of oxidation. You can use hot water to constantly pour the wire connection of the battery.

Check the presence or absence of aging or short-circuiting in all parts of the circuit to prevent the battery from being decommissioned early due to excessive discharge.

Over discharge

2. The battery is stored for a long time (not charged during storage)

3. Cannot be charged by car engine

4. No electrolyte

5. The electrolyte is too high

6. Charging under high temperature conditions

7. Contaminated by contaminated materials (such as hydrochloric acid, sea water, organic acids, etc.)

8. Add excessive current when charging the battery

9. The deformation of the electrode plate causes the positive plate and the plate to contact each other, thus causing a short circuit.

10. Deposited on the upper and lower parts of the pole, causing a short circuit

11. As long as you pay attention to avoid the above points, the service life of your battery will increase accordingly.

The electrolyte level should always be between max and min, check once a month, and depending on the liquid level, properly add distilled water (pure water), do not add acid.

When the voltage of the battery is insufficient and the light is dim and the starting is weak, the outside of the vehicle should be charged in time.

To prevent the battery from overcharging or long-term loss of power, overcharging will cause the active material to fall off, and the loss of electricity will cause the plate to vulcanize. Ensure that the regulator voltage cannot be too high or too low.

During use, always check the vent hole to prevent the battery from deforming or bursting.

Keep the battery away from heat and open flames. Keep it ventilated during charging and use to prevent burning and injury.

Prevent the battery from discharging for a long time and high current. The starting time of each use can't be more than 5 seconds, two consecutive start times, and the interval is 10-15 seconds.

The battery should be installed firmly on the car to reduce vibration.

Always check that the battery cable is secure. All the unions must be in good contact to prevent sparks and cause the battery to explode. The oxides and sulfates produced by the battery clips must be scraped and coated with Vaseline to prevent further corrosion.

Frequently remove dust and dirt from the battery cover and spill the electrolyte to keep it clean and dry to prevent self-discharge.

Sealing gel cracking should be repaired in time.

When the car is driving in a cold area, it is necessary to avoid the battery being completely discharged to prevent the electrolyte from freezing.

The page contains the contents of the machine translation.