18650 Battery Charger PCB

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If you are looking for a brand new and high-quality 18650 Battery Charger PCB, you are in the right place!

Venture is a professional manufacturer of quality 18650 Battery Charger PCBs for more than 10 years.

We provide a wide range of 18650 Battery Charger PCBs for our customers from all over the world. We are manufacturing different types of PCBs for the battery chargers.

Your Leading 18650 Battery Charger Supplier in China

For more than 10 years, Venture is the leading manufacturer and supplier of all types of PCBs including 18650 Battery Charger PCB.

We are capable of designing 18650 Battery Charger PCB according to the customer’s demand and needs.

Our goal is to provide 18650 Battery Charger PCBs that will surely meet the needs of your DIY charger.

Additionally, we are supplying our products using the latest methods and techniques. Our products are always manufactured based on the standards and our certification.

Venture is committed to provide and supply the best quality of 18650 Battery Charger PCBs with reasonable prices to our customers and clients. We have the best service in manufacturing our products.

We have professional, experienced, and friendly staffs that will assist you in your purchase of 18650 Battery Charger PCBs, so don’t hesitate to contact us.

If you have more questions, we will be happy to answer you.

18650 Battery Charger PCB: The Ultimate FAQ Guide

18650-Battery-Charger-PCB-The-Ultimate-FAQ-Guide

In this guide, you will find all information you need about 18650 battery charger PCB.

So, before investing in your next 18650 battery charger PCB read this guide.

Let’s dive right in:

What Is An 18650 Battery Charger PCB?

An 18650 battery charger PCB is a circuit network you employ in the automatic recharging of 18650 batteries.

A recharge is necessary whenever your battery voltage reduces such that it cannot support functionality.

An 18650 battery is a type of lithium-ion cell that is similar to but larger than the AA cell.

The battery measures 18 mm by 65 mm with the zero indicating its cylindrical shape.

You find these battery cells have a considerably higher working voltage at 3.6 V compared to 1.5 V of alkaline cells.

The area of application influences the type of 18650 battery charger PCB you employ.

You can have an 18650 battery charger PCB for your mobile phone, electric vehicle, flashlight and even vaping device.

18650 Battery Charger PCB

18650 Battery Charger PCB

What Are The Charging Methods Available When Using An 18650 Battery Charger PCB?

When using an 18650 battery charger PCB, you have two common categories describing the method of charging. You can either employ a fast charge method or a slow charge method.

When using the fast charge method, you gain from faster charge times attaining maximum voltage within two hours.

Alternately, a long charging time characterizes the slow charging method taking over four hours to attain a full charge.

You find slow charging offers you a cheaper option compared to the fast charging method. Furthermore, when you employ slow charging, you do not need a secondary circuit for detecting charge.

What Material Is An 18650 Battery Charge PCB Made Of?

The 18650 battery charger PCB constitutes laminate formation of conductive and non-conductive layers.

You employ metal films such as copper for the conductive layer and substrate material for the non-conductive layer.

A common substrate material for the 18650 battery charger PCB is the FR-4 material which isolates the conductive layer.

The FR-4 material has a high temperature of glass transition with good dielectric properties.

Use of copper as the conductive material for the 18650 battery charger PCB is due to impressive conduction properties.

Additionally, it is widely available making it a cheaper alternative compared to other good conductors such as gold and silver.

Can An 18650 Battery Charger PCB Turn Off Automatically?

Overcharging of a cell is damaging, however, you cannot always be there to disconnect the charger upon attainment of maximum voltage.

Consequently, you find a specialized circuit to prevent the cell from overcharging by automatically turning off is essential.

When employing an automatic turn-off feature, you use AC-DC converters and relay drivers in your circuit.

You have a transformer in the converter set-up that steps down the AC input before rectification and capacitor filtration

A regulator provides the required DC voltage supply to the battery with transistors of the PNP type electromagnetically energizing the relays.

Additionally, you have another similar transistor finding use as a driver attached to the first’s collector.

How Do You Apply Copper On The 18650 Battery Charger PCB?

When fabricating the 18650 battery charger PCB, you apply a conductive layer, in this case copper, over the substrate.

There are two methods you can employ in applying copper for your 18650 battery charger PCB: etching or plating.

Etching is a subtractive process entailing the deduction of undesired parts of a copper film to leave a desired formation.

You can employ dry or wet etching in which you use plasma approaches and chemical solutions respectively.

Contrarily, plating involves the precise deposition of copper over a substrate in the desired circuit formation.

You can use direct deposition of copper over the substrate or employ electroplating using anodic deposition.

Why Do You Use Copper As A Conductive Layer Material For An 18650 Battery Charger PCB?

Copper is one of the metals with good electric conductivity alongside silver and gold.

However, many 18650 battery charger PCBs consist of copper as the preferred material for the conductive layer.

You can attribute the use of copper to the following:

  • Copper material offers you good conductivity with low electrical signals loss.
  • You find copper affordable due to its wide availability compared to rare metals such as gold and silver.
  • The property of thermal transference also makes copper favorable allowing you to conduct heat away. Accumulation of heat on the board can result in thermal strain and eventually board failure.
  • When constructing an 18650 battery charger PCB, you employ other materials such as FR-4 for the substrate.

You find copper presents no issues with compatibility in this case offering same performance levels regardless.

What Are The Common Types Of 18650 Battery Charger PCBs?

There are two major types of 18650 battery charger PCBs with different technologies and prices.

These PCBs offer you different performance levels and are the smart or intelligent charger and the timer controlled charger.

Timer Controlled Charger PCB

A timer controlled 18650 battery charger PCB has an automatic timer for shut-off inbuilt into the charger during manufacture.

With a timer controlled battery charger PCB, the duration of charge is the same for all cells regardless of voltage amount.

Additionally, the battery charger PCB terminates charge supply upon elapsing of the set time halting the charging process.

The fixed charge time for this charger PCB type means you undercharge some battery cells while overcharging others.

The battery charger PCB lacks the intelligence to determine the charge level in each cell and hence the required recharge.

Therefore, the timer controlled 18650 battery charger PCB can be expensive in the long run as overcharging can damage the batteries.

18650 Lithium Battery Charger PCB

18650 Lithium Battery Charger PCB

Smart/Intelligent Chargers PCB

Smart 18650 battery charger PCBs can determine the charge level in a cell and provide appropriate top-up charge.

Therefore, where you have multiple cells with different charge levels, each will charge to maximum in its own time.

While a smart 18650 battery charger PCB is costly, it is less prone to damage cells through overcharging.

You charge each cell to maximum voltage with supply terminating for the respective cell that attains full charge.

How Long Is The Charging Process Of An 18650 Battery Charger PCB?

The charging process involves raising the charge level of a battery to 4.2 volts.

Contrarily when you mention charge cycle, you include the process of cell discharge from 4.2 volts to 2.5 volts.

The duration of the charging process of 18650 cells using a battery charger PCB will vary with different factors.

For instance, the charging process is dependent on the charge level of the cell and the age of the battery.

You will observe a longer charging process using an 18650 battery charger PCB when the cells have discharged fully.

Furthermore, old cells with over five hundred charge cycles lose their capacity over time taking longer to attain full charge.

Can You Employ Ceramic Material In Your 18650 Battery Charger PCB?

Yes, you can.

You employ the 18650 battery charger PCB for various charging applications including mobile phones and even electronic cars.

Some of the charging applications have large thermal dissipations requiring you to have a PCB with good thermal management properties.

Ceramic material you can employ for your 18650 battery charger PCB includes aluminium oxide and aluminium nitride.

Outstanding properties allowing the use of ceramic material in 18650 battery charger PCBs are:

  • Increased endurance when in high temperature conditions given their high temperature of decomposition and glass transition. These materials have an impressive capacity to effectively dissipate large heat quantities.
  • The low coefficient of thermal expansion possessed by ceramic materials ensures they maintain their response in different temperature conditions. Consequently, you are unlikely to experience damage to the battery charger PCB resulting from thermal strain.
  • Where you have cases of power surges and inconsistent voltage supplies, ceramic materials have an impressive isolation property. Ultimately, when you use them in the battery charger PCB, they protect it from the effects of such.
  • Ceramic materials have low moisture absorption property which ensures their dielectric properties remain unaffected. Consequently, you can employ ceramic materials in 18650 battery charger PCBs used in wet and humid environments.

What Influences The Charging Process Using 18650 Battery Charger PCB?

Other than the inherent qualities of an 18650 battery charger PCB, you find the following factors influence the charging process too:

Temperature

Using your 18650 battery charger PCB in high or very low temperature can result in the damage of the cells.

Do not use your 18650 battery charger PCB when the temperature is above 45 oC or below 0 oC.

You can also observe an internal rise in temperature when you overwork the battery charger PCB.

Charging And Discharging

When charging your 18650 cells using an 18650 battery charger PCB, you raise the voltage to 4.2 volts. Discharging is when the charge levels in the battery reduce to about 2.5 volts.

Leaving the battery cell to discharge to below 2.5 levels is bad practice and can result in damaging your batteries.

However, you should reasonably use up some of the charge before attempting to charge the battery cells again.

Keeping the 18650 battery charger PCB in constant state of charging can result in the failure in the charging system.

Charger Type

You find two common types of the 18650 battery charger PCB: the timer controlled and the smart charger PCBs.

The timer controlled charger has a fixed charging duration whereas the smart charger evaluates charge levels before instituting the charge process.

The indiscriminate charging approach of the timer controlled charger can result in the damage of cells.

However, a smart charger PCB determines the current charge level before charging every cell to the required maximum voltage.

What Are Some Of The Safety Precautions Necessary When Using An 18650 Battery Charger PCB?

When using an 18650 battery charger PCB, it is paramount to adhere to certain safety precautions.

These precautions ensure you do not suffer personal injury from shocks, damage the cells or risk a fire.

Some of the necessary precautions of safety include:

  • When using an 18650 battery charger PCB, do not connect the battery terminals to conductive objects. Such an attempt can result in shorting of the charger circuit or at worst, a fire.
  • Carefully handle the 18650 battery charger PCB, avoiding falls, hits or knocks with strong impact.
  • Inspect the 18650 battery charger PCB for damage such as cut wires or detached solder joints. You can prevent a short circuit this way with timely repair activity.
  • Do not leave the 18650 battery charger PCB exposed to high temperatures, excessive heat or place them near fires. Additionally, do not dispose these charger PCBs in fires as they could explode causing great damage.
  • Avoid placing 18650 battery charger PCBs in wet conditions or submerging them.
  • Do not use the18650 battery charger PCB in very low or very high temperature conditions. Such conditions can damage the circuit board and/or cells.

Is An 18650 Battery Charger PCB Protected?

When you mention protection for an 18650 battery charger PCB, you mean protection from Pressure, temperature and Current (PTC).

Manufacturers furnish an 18650 battery charger PCB with a secondary circuit for voltage control and automatic shut off upon error assessment.

When you provide an 18650 battery charger PCB with a protection circuit, you minimize the chance of damage from internal strain.

How Does A 3400 mAh And 2600 mAh 18650 Battery Charger PCB Compare?

You find the 3400 mAh 18650 battery charger PCB costs a little more than a 2600 mAh 18650 battery charger PCB.

However, from the point of performance, you find given the price difference, there isn’t much to separate the two.

The 3400 mAh 18650 battery charger PCB offers you impressive performance when the discharge rate is low.

However, you notice that their performance greatly diminishes as the discharge rate increases.

Additionally, you find nothing much in difference in performance when you use both cell types at a discharge rate of 5A.

Nonetheless, when using a 3400 mAh, it is best to use the lowest setting of rated power to achieve best results.

Can You Use Different 18650 Cell Capacities With An 18650 Battery Charger PCB?

While you can employ 18650 cells with different capacities with a single 18650 battery charger PCB, it is not advisable.

Using different cell capacities can permanently damage cells due to an over discharge especially when using a timer controlled charger PCB.

Employ cells with similar capacity for your 18650 battery charger PCB to ensure uniformity in the charging process.

18650 Lithium Battery Charger PCB Assembly

18650 Lithium Battery Charger PCB Assembly

Do You Use An 18650 Battery Charger PCB With A Button-Top Or A Flat-Top Cell?

You identify a button top cell with an extended cap of almost 2mm above the cell surface. Usually, you find this serves as the positive terminal much like alkaline batteries.

A button top cell design allows you to stack batteries in series configuration for employment in a multi-cell device.

Contrarily, a flat top cell has no protruding ends allowing their employment in battery packs encompassing numerous cells.

You cannot use the button top in a device or 18650 battery charger PCB made for the flat top cell.

However, you can employ the latter for a button-top device albeit with an electrical connection that can prove unreliable.

What Is The Maximum Charge Limit When Using An 18650 Battery Charger PCB?

As one of the most common battery cell types, you find many 18650 battery cells with different capacities.

These cells find use in different applications such as electric vehicles, laptops and specialized flashlights.

Nonetheless, you find the 18650 cell with the largest output rated at 3600 mAh.

However, when using an 18650 battery charger PCB, you can achieve a maximum of 4.2 V beyond which is overcharging.

How Do You Determine The Capacity Of A Cell Using An18650 Battery Charger PCB?

You can determine the capacity of a cell using 18650 battery charger PCB, a DC source and a load resistance.

In this case, you charge the cell to full capacity before initiating a full discharge.

You then determine the capacity of the cell by employing a formula in which you multiply the charging current and time.

Similarly, multiply the discharge current and time to obtain the cell’s capacity.

How Should You Use An 18650 Battery Charger PCB?

When using the 18650 battery charger PCB, ensure you avoid situations that can damage the cells or hamper their performance.

When employing the 18650 battery charger PCB, be sure to avoid continuous charging upon attaining maximum voltage.

Additionally, keeping your device in heavy application while simultaneously employing the 18650 battery charger PCB is bad practice.

You should also ensure you do not employ the 18650 battery charger PCB in overcharging or undercharging a cell.

Furthermore, avoid using the 18650 battery charger PCB at very low or very high temperatures.

Such extreme temperatures can result in thermal strain on the battery charger PCB resulting in damage.

What Are The Guidelines When Using An 18650 Battery Charger PCB?

When using an 18650 battery charger PCB, the following guidelines are essential:

  • During charging, when you attain the maximum voltage of 4.2 volts, disconnect the 18650 battery charger PCB.
  • Only use the 18650 battery charger PCB with the specified charge current for the cell.
  • Do not employ the 18650 battery charger PCB in extreme temperature conditions below 0oC and above 45 o
  • When using the 18650 battery charger PCB, take note of the cell voltages ensuring you charge each cell appropriately.
  • Furnish a protection circuit with your 18650 battery charger PCB, to prevent damage from electrical faults such as short circuits.

What Is The Main Danger When Using An 18650 Battery Charger PCB?

When using an 18650 battery charger PCB, you face the risk of experiencing dangers such as electric shocks, fires and explosions.

During the charging process, the lithium cells can exhibit internal strain resulting in an explosion.

An explosion can also result from a defective circuit connection or the presence of defective cells resulting in heat build-up. The thermal accumulation combined with the close packing of cells can set up a destructive explosion.

How Do You Arrange Cells In An 18650 Battery Charger PCB?

There are two ways in which you can arrange cells in an 18650 battery charger PCB: series or parallel configuration.

In series configuration, you have the positive terminal of a battery connected to the negative terminal of the succeeding cell.

Parallel arrangement of cells in an 18650 battery charger PCB involves connecting the positive terminals together and the negative terminals together.

You find that with series connection you attain higher voltage whereas parallel connection affords you increased output.

18650 Battery Charger PCB Connection

Cells Arrangement in 18650 Battery Charger PCB

When Do You Attain Full Charge When Using An 18650 Battery Charger PCB?

When using an 18650 battery charger PCB, you need to initiate the charging process when your voltage level drops to 2.5 volts.

Allowing the charge to drop beyond this level can be damaging to the cell hampering effectiveness in performance.

You consider a cell fully charged when you attain a limit of 4.2 volts.

Sustained charging after this point is overcharging which can induce internal strain in the cells leading to damage.

Can You Use An 18650 Battery Charger PCB As A Trickle Charger?

A trickle charger is an efficient way of charging your cells such that it offers you sustainable performance levels.

Using regular chargers reduces the performance levels of your cells over time when improperly employed.

When you employ an 18650 battery charger PCB as a trickle charger, you keep your cell’s charge constant during storage.

As a trickle charger, the 18650 battery charger PCB stores up electrical power in voltage form much slower.

Consequently, you achieve a better life performance from your battery due to the slow charge rate.

The charge rate is comparatively at per with the discharge rate allowing you to extract more from a single charge.

How Do You Store A Cell After Using An 18650 Battery Charger PCB?

How to store your batteries is important because all cells self-discharge at rest with the rate considerable during storage.

Using a trickle 18650 battery charger PCB offers you the best form of storage for your cell.

An appropriate storing strategy is to unplug the battery and charge it fully using an 18650 battery charger PCB.

Thereafter, you need to make periodic checks ensuring the battery is at full charge at any given time.

What Environmental Factors Affect The Performance Of An 18650 Battery Charger PCB?

You observe the performance of an 18650 battery charger PCB is subject to the prevailing temperature and moisture conditions.

Your 18650 battery charger PCB needs to have low moisture absorption rates to prevent disruption of the board’s dielectric properties.

Additionally, when working with your 18650 battery charger PCB, there should be ambient temperature to prevent thermal-induced strain.

Board strain can damage the 18650 battery charger PCB breaking conductive paths and disrupting electrical signal transfer.

At Venture Electronics we offer a range of battery charger PCBs depending on your specific requirements and specifications.

Apart from our 18650 battery charger PCBs, you can also get battery protection PCB and battery holder PCBs.

Contact us today for all your 18650 battery charger PCBs.

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