How to measure the level of the car s battery is good or bad

How to distinguish the good and bad battery of the battery car:

1. Feel for yourself.

A new battery is more durable when it starts up on a full charge, while a refurbished battery can't, which gives you a feel for how you use it.

2. Look at the signs.

The case of the battery can be disassembled and inspected, the original normal manufacturer of the battery produced must have three signs, the name and address of the manufacturer, the inspection certificate, the sealing certificate, none of which can be missing, on the contrary, it must be a fake brand or refurbished product.

3. Look at the range of battery cycles.

Looking at the range of battery cycles, under normal circumstances, the battery can still travel about 25-30km after one year, and about 15-20km after two years, which is about three years.

Notes:

When buying a new car, be sure to provide a three-pack contract and note. The shelf life is mainly the three packs of batteries, inverters and motors, and if there is any problem, it is good to claim or complain to the merchant on this basis to avoid unnecessary trouble in the future.

How to test the quality of the battery car battery with a multimeter:

1. It can be roughly tested.

2. Ride the battery bike until you can't ride it.

3. Then disassemble the battery box and use a multimeter to measure the voltage of each battery.

4. If there is an 11V, or even between 9V-10V, and the others are above, so that you can balance it at the maintenance office. If it's very bad, you can't ride it after only 10 kilometers, and the voltage of each battery is still very low about 11V, so it can only be scrapped.

There are several other ways to distinguish the quality of the battery car battery:

1. The new battery is more durable when it starts after being fully charged, while the refurbished battery can't do it, which you have to feel during use.

2. You can also disassemble the shell of the battery for inspection, the original regular manufacturer must have three kinds of identification on the battery, the manufacturer's name and address, inspection and verification, inspection and sealing certificate, all of which are indispensable, otherwise it must be a miscellaneous or refurbished counterfeit product.

Another: When you buy a new car, you must provide a three-pack contract and indicate the shelf life, mainly the three packs of batteries, inverters, and motors.

3. Look at the battery riding mileage (under normal circumstances, the battery can still travel about 25-30 kilometers after one year, and 15-20 kilometers after about two years, which is about the same for three years).

1. Ride the battery bike until there is no electricity, and then use a multimeter to measure the virtual voltage, and the one with a low voltage is generally bad.

2. Use a high-precision battery detector for discharge detection, where the discharge voltage is below 10V, the general is broken.

Hello! My family bought a battery car last year, and now it is nearly a year, and I rarely ride it halfway, and now I am ready to ride, but the battery cannot be charged, and the charging gas indicator light is not on, what is the reason.

You can't just measure the voltage, but mainly measure the capacity of the battery, and use the discharge record to see the discharge current and discharge time of the battery. Then use a hydrometer to measure the specific gravity of the electrolyte, which should be measured for one hour after the electricity is flushed.

Measure whether the voltage of the battery is within the rated voltage range.

2. If the no-load battery voltage is normal, plus the load, you can open the electric vehicle door, put the rear wheel overhead, add a certain resistance to the rear wheel, and screw the accelerator switch;

3. At this time, measure the battery voltage, if you find that the battery voltage drops, but the drop is not much, and the vehicle accelerates strongly, it means that the battery is basically intact;

4. If the battery voltage drops very much at this time, which is seriously lower than the nominal lower limit voltage, and the vehicle accelerates weakly, it means that the battery has aged and the capacity is insufficient.

The above methods can only be roughly judged, and accurate judgment needs to be measured with a battery capacity meter.

Hope it helps.

1. Instrument test: Generally, the battery discharge tester is used, and the two positive and negative measuring pliers of the tester are clamped respectively to hold the positive and negative electrodes of the battery, and the test button is pressed to observe the indication of the test instrument

1. If the meter indicates that the voltage is more than 9V, the battery is in good condition.

2. If it is lower than 9V but the pointer is at a certain value and does not move, it means that the battery is in a state of power loss and needs to be recharged.

3. If the pointer slowly decreases, it means that there is a short circuit inside the battery.

4. The rapid drop of the pointer to 0V means that there is an open circuit inside the battery.

2. Empirical method: observe whether the battery electrolyte is turbid, and the turbidity indicates that the positive plate of the battery is softened. Observe whether there is sediment at the bottom of the battery, if there is an indication that the plate is falling off, the capacity of the battery is insufficient.

Tap the two electrode piles of the battery with your hands, and if you hear a cavity sound, it means that the pole piles and plates are broken. Use a thick wire to short-circuit the positive and negative electrode piles to observe each dosing hole of the battery, if a bubble is found in a certain space, it means that the spacer has been damaged.

You can use instruments and equipment to test whether its battery is good or bad to see how much power it can store, which is the safest.

For battery testers. When we measure the battery, there is a heating tube inside it to work, and at this time the change of battery voltage is observed.

Looking at the power observation port, you can see three colors, green means that the battery is sufficient, black means that there is a slight loss of power, and white represents scrap and needs to be replaced.

If the positive and negative poles of the battery tester are poured on the battery, the positive and negative poles should be checked to see if the rated voltage and stable voltage are above.

Using a battery tester, how to quickly distinguish the quality of the battery? The maintenance master does this.

How to watch the battery tester, whether the TV is good or bad, is the main negative number of the battery?

To judge the quality of the battery, you can use instrument testing and empirical methods: 1. Instrument test: Generally, the battery discharge tester is used, and the two positive and negative measuring pliers of the tester are clamped with the positive and negative electrodes of the battery respectively

How do you think the battery is good or bad, you can directly see whether the battery is good or bad.

If the meter indication voltage is above 9V, it means that the battery is in good condition, and if the meter indication voltage is below 9V, it means that the battery is not in good condition and there is a problem.

Most of the battery checkers are the testers that use the battery discharge, connect the positive and negative measuring clamps of the tester with the positive and negative electrodes of the battery, the positive electrode to the positive electrode, the negative electrode to the negative electrode, and then press the test button, you can carry out the inspection, and reflect whether the state of the battery is good or bad by observing the voltage on the instrument.

When the indication voltage of the meter exceeds 9V, it means that the battery is in good condition; When the indication voltage of the instrument is lower than 9V, it means that the battery is in a state of insufficient power, if the pointer is also slightly lowered, it means that the battery has a short circuit, if the pointer drops to 0V immediately, it means that the battery has an open circuit.

Precautions and key points for batteries:

The formal method of detecting the lead-acid battery of the battery car is to discharge it with a discharge meter, a battery of 12V12A is discharged with a current of 5A, the discharge time should be more than two hours for the performance of the battery is very good, the battery with a discharge time of less than two hours is not ideal, but it can be used, and the battery of more than an hour or less than an hour is a scrapped battery.

According to Ohm's law I = v r take a resistance value of 5 ohms, the power is 100 watts of resistors connected to the two contacts of the positive and negative poles of the battery, the battery belongs to the discharge state, and then use the voltmeter to measure the voltage of the battery when discharged, if it is above 12V, it is a good battery, between 11V and 12V for the general battery, and it will not work if it is 11V.

Using a battery tester, how to quickly distinguish the quality of the battery? The maintenance master does this.

The specific battery test method is as follows:

1. Test the static voltage of the battery before starting.

Normal should be; If the voltage is between 11, it means that the battery is slightly depleted, but it can still start the car. If the voltage is lower than 11V, it means that there is a serious power loss, resulting in the inability to start the vehicle, and the battery needs to be charged with a special battery charger, and the battery voltage should be in the normal voltage range after charging.

2. Measure the dynamic voltage of the battery after the car.

The normal voltage should be between, and if the voltage is too high or too low, it is abnormal, indicating that the voltage regulator of the car generator is faulty and needs to be replaced.

3. Measure the instantaneous minimum voltage when starting the vehicle.

The minimum voltage of the battery when starting in Beixianye should be above 9V normally, and if it is lower than 9V, it will lead to difficulty in starting or even not starting the car. At this time, the battery should be charged, and after charging, it is still the case, and it is necessary to replace the battery with a new one.

Definition of battery

The battery car battery is a component that provides power for the battery car, which is mainly divided into lead-acid batteries, lead-acid batteries, lithium batteries, etc. The vast majority of today's electric vehicles are equipped with lead-acid batteries, because lead-acid batteries are low-cost and cost-effective.

Other methods of judgment:

1. Look at the appearance of the battery, whether there are traces of grinding and scratching, and then see whether there are rust marks on the metal parts of the positive and negative electrodes of the battery. In addition, some batteries will be labeled with an anti-counterfeiting label on the butt of the battery shell, you can see if it is normal, and there is the production date on it.

2. See whether the old and new batteries of the electric crane can be used together, and whether the old and new batteries are compatible.