Can the 3 batteries be used in parallel if the size of the battery is different?

As long as the voltage is the same, it can be used in parallel.

It cannot be used in series, and the large-capacity battery will be large if it is used in series, which will cause unnecessary waste.

Whether the battery can be connected in parallel depends on whether the voltage is the same. The voltage is the same, regardless of whether the ampere-hour is the same or not, it can be connected in parallel; The voltage is not the same, no matter whether the ampere-hour is the same or not, it cannot be connected in parallel.

There is no problem with parallel use, when paralleled, even if the capacity is small, it will be protected by the total capacity voltage, and the total capacity is the sum of the capacity of the split unit.

However, when parallel connection, the battery terminal voltage must be the same, if it is a lithium battery, the internal resistance is small, once there is a voltage difference, there will be high-current discharge between the batteries in parallel, and even fire damage to the battery and other problems.

The optimal current for parallel connection is only the sum of the optimal current of each battery; Series is the optimal current for the smallest battery.

If you just use it in parallel and no longer connect other batteries in series, parallel connection is completely harmless and increases the discharge current, which is beneficial to the battery, regardless of the different battery parameters, you can connect in parallel as long as the voltage is about the same, it is a completely reasonable operation!

But! The series connection is different, the series must look at the battery voltage, capacity, internal resistance and so on.

Ampere-hours (AH): One of the indicators that reflects the size of the capacity, which is defined as the time it takes to discharge at a specified current. Batteries of the same voltage have large ampere-hours and large capacity; The battery with the same ampere-hour has a high voltage and a large capacity.

The capacity of the battery is usually expressed in terms of voltage and ampere-hours, such as 12V7Ah, 12V24Ah, 12V65Ah, 12V100Ah.

Batteries with different capacities can be connected in parallel.

Use. The parallel ratio of the battery requires the same voltage, which has little to do with the capacity. It's like connecting several buckets with a connector. If the water is connected at the same height, a flow of water will occur, and if the water is different, it may damage the bucket.

When two batteries are used in parallel, the difference in capacity should not be too large, and the battery type should be the same. For example, in terms of use, batteries include starter batteries, traction batteries, etc. The structure has rich liquid type, poor liquid type, etc.

The charging and discharging parameters of different types and structures of batteries are different, and they are not suitable for parallel use.

It is possible to connect in parallel, but not just two. If you want to connect in parallel, you have to connect a set of 48V batteries in parallel.

In other words, it is not feasible if you only connect those two idle 12V batteries in parallel. If you only connect two in parallel (I don't know how you want to connect them), if you only connect one battery in parallel on two of the batteries on the battery bank in use, it doesn't make much sense and will affect the other two batteries. If you connect two idle 12V batteries in series and connect them to the entire battery pack in use, this is not possible.

Not only will it make your battery car unable to drive normally, but it will also damage the battery.

If you must connect in parallel, the best way is to add two batteries of the same size as your idle battery, and then connect them in series to form a 48 battery pack, and then connect them in parallel to the battery pack of the battery car.

This can prolong the battery life of the battery car, but it will increase the volume and weight of the battery car, so that the carrying capacity of the battery car will decrease.

To use an analogy, you should understand that if you go out every day with a 500ml bottle of mineral water, you can drink it until noon, and then get another bottle when you get home. You can also bring a 20L bucket of mineral water and you will no longer need to refill it for a few days. Therefore, whether to add a battery or not depends on your use.

Connect four lead-acid batteries in parallel, and then add the positive and negative power clips on the charger to the positive and negative poles of the lead-acid battery! The current modulation is about 18A, and the charging time is about ten hours! (If there is too much battery liquid, remove the leather cap on the lead-acid battery to prevent explosion) If it is charged in series, the two batteries will be connected in series, and then the other two batteries will be connected in series, and then the two sets of batteries will be charged in parallel!

It is the same as the method!

Dear, yes. But there are three conditions to be met: 1) The rated capacity of the battery is the same, such as:

The maximum discharge current of the battery is the same, which can ensure the balance of the battery. 3) The type of battery is the same, such as: both are lead-acid batteries.

If it is a battery of different capacity, the capacity of the battery after series connection is generally the smallest of all the batteries, and the rated voltage is the algebraic sum of the rated voltage of the two batteries (the series is additive, and the reverse series is subtracted). When the batteries are connected in parallel, the rated voltage remains unchanged, and the capacity after parallel connection is the algebraic sum of the capacity of the parallel battery (the capacity is added). When connecting in series, remember to balance the battery first, if it is not treated, it will cause capacity imbalance and affect the service life; When parallel connection, remember to balance the voltage of the battery first, if it is not treated, it will cause mutual discharge and easily burn the battery.

Summary. The requirements for the parallel use of the battery are not high, and when the rated voltage of the general battery is the same, it can be used in parallel; However, the battery cannot be used in series at will.

Can two 12V batteries be used in parallel if they have different capacities?

Hello, on this question, the answer is being sorted out, please wait for a while Hello Yes Just ensure that the sum of the two capacities is consistent with the output capacities.

One is 30 amps and the other is 60 amps, can they be used together?

What is the output capacity.

Electric cars. In parallel, the voltage output is 12 volts.

The requirements for the parallel use of the battery are not high, and when the rated voltage of the general battery is the same, it can be used in parallel; However, the battery cannot be used in series at will.

As long as the voltage is exactly the same, it can be paralleled.

The voltage is all 12V.

Yes, you can. Can it be fully charged when it is cool?

If the two capacities are different, the time to fill them up will be different.

Can the battery be charged?

It can be charged in parallel, and there will be no problems in general. It's just that if the capacity of the two batteries is too different, the current should not be too big when charging. The charging time should not be too long. Otherwise, the one with a small capacity will have a problem.

Cannot be used together in parallel.

Reason: Two sets of batteries cannot be used in parallel, even if the battery from the same factory, the voltage cannot be exactly the same, and the internal resistance cannot be completely equal. If it is connected in parallel, it will form a circulation, which will lose power at least and burn the battery at worst.

In the case of a fully charged battery and a battery that is seriously damaged or damaged in parallel, the high current discharge and charging will affect the service life of the battery. Under normal circumstances, the voltage of the two batteries is not much different, and the charging and discharging current will not be very large, after paralleling, the battery with high voltage charges the battery with low voltage, and soon the voltage of the two batteries is dispersed and imitated by the same grasp, and there is no such situation.

Can car batteries be connected in parallel?

1. Theoretically, lead-acid batteries for automobiles can be used in parallel, but it is not recommended to use them, due to individual differences in batteries, service life and other factors, it is not easy to balance, which will affect the life. If a battery cell has a short circuit fault in use, it will quickly burn the connecting wires and battery pole piles outside the battery, and even cause a fire.

2. After parallel connection, it is equivalent to a large-capacity battery in series in the battery pack, and the small capacity of the battery is discharged in series after the discharge is completed, and the battery with large capacity still has power, if there is no under-voltage protection, then there will be anti-charging, and the small-capacity battery is easy to be damaged by anti-charging.

3. If the under-voltage protection is started, the battery capacity of the whole chongqing group is also subject to the smallest battery capacity, and increasing the capacity of a battery alone will not play any role. In addition, the charging and discharging fluctuations of the car are relatively large, the parallel operation of the battery is not allowed to be too large, the small battery capacity is small, it is easy to undercharge or overcharge, and it is easy to overdischarge or undercharge, and it is damaged prematurely, so it is not recommended to use the battery in parallel in practice. <>

Generally, the capacity gap is not large, as long as the voltage is correct, but if the gap is too large, it is not suitable, because the capacity of the battery charging current is not the same, for example, a 12V5A battery charging current is very small, a 12V200A battery is very large, they are charged together, if the small current is charged, the large battery is charged very slowly, and if the large current is charged, the small battery will be charged, so it depends on the situation.

Never. The original bai cause is: each.

Du only the battery power is inconsistent, discharge: capacity of different batteries, discharge, there will always be a special first discharge, and the other is still higher voltage, charging: different capacity of the battery, charging, there will always be a full charge first, and the other is still lower voltage, battery loss: the battery voltage is less than 10% of the rated voltage, there will be a risk of power loss, and once the battery loses power, its life is shortened by 80%, battery overcharge: the battery is overcharged, will break the chemical balance, And accompanied by the electrolysis of water, the same will damage the battery, charging between the batteries: when the voltage of a battery drops, the battery with high voltage will charge it, and the current size is not controlled, if this current is superimposed with the charging current from the generator, even if it is instantaneous, the damage to the battery is also very large, after a battery is damaged, the good battery will always charge it until its own power is exhausted, in summary, the battery is used in parallel There are harsh conditions, requiring the same factory, the same model specification, the same batch, and the same access circuit at the same time, The use environment is the same, otherwise, it is not recommended.

Because the capacity is different, charging becomes a question first.

The small capacity of the question is quickly charged, and the large capacity is still in a state of insufficient return! You have to answer that it is to wait until the large-capacity battery is sufficient, and the small-capacity battery is overcharged, and the biggest harm of overcharging is to make the active substances on the lead plate fall off, and eventually lead to the scrapping of the battery! When charging, you only need to charge each battery separately, without parallel charging, there is no problem with it, but it cannot meet the requirements of large-capacity batteries!

This is equivalent to the average capacity of 4 batteries!

Two sets of batteries can be used together in parallel.

Ordinary battery:

The plates of ordinary batteries are composed of lead and lead oxides, and the electrolyte is an aqueous solution of sulfuric acid. Its main advantages are stable voltage and low cost, while the disadvantages are low specific energy, short service life and frequent daily maintenance.

Maintenance-free battery:

Due to the advantages of its own structure, the consumption of electrolyte is very small, and there is basically no need to replenish distilled water during the service life. It also has the characteristics of shock resistance, high temperature resistance, small size, and small self-discharge. The service life is generally twice that of ordinary batteries.

There are also two types of maintenance-free batteries on the market:

The first is that the electrolyte is added at one time when purchasing, and it does not need to be maintained in use, and the other is that the battery itself has been added with electrolyte and sealed when it leaves the factory, and the user can not add the replenishment solution at all.

Dry-charged battery:

Its full name is dry charged lead-acid battery, its main feature is that the negative plate has a high power storage capacity, in a completely dry state, can save the power obtained within two years, when using, only need to add electrolyte, wait for 20-30 minutes can be used.

The origin of the battery car:

The battery car is also known as an electric vehicle, which is a pure electric motor vehicle powered by an electric motor and provided by a battery. In recent years, it has been very widely popularized in our country.

Domestic battery cars are mainly used for sightseeing passengers, public security patrols, and carrying goods, the main purpose of electric sightseeing cars is in parks, scenic spots, leisure resorts, universities, hospitals, golf courses, real estate companies and other places as passengers, electric patrol car owners are used to carry out public security patrols in station squares and dense places, and the main use of electric trucks is in factories, ports, terminals, logistics warehouses, etc. The main purpose of the electric sanitation vehicle is to clean the site, clean the road, transfer garbage, etc. The service life of the battery car is generally 8 to 12 years, and the battery service life is generally 1 to 4 years.