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Group 4D Battery: The Ultimate Guide

Table of Contents

What Is An 4D Battery?

An 4D battery usually refers to a group size battery. Which have size 21 x 9 x 10 inches. When you’re picking out batteries for your off-grid system, solar system, RV batteries, and industrial equipment. You’ll come across the group 4D battery.

There are currently two main types of 4D batteries on the market. Lead-acid 4D batteries and lithium 4D batteries.

Due to lithium batteries have great advantages in cycle life, weight, and charge and discharge rate. The lithium batteries 4D batteries replace Lead-acid 4D batteries gradually.

Related article: 《The reason why we need upgrade lead acid to lithium?

How Does 4D Battery Work?

The following picture to show the internal structure of the lithium 4D battery.

The lithium 4D battery is Consists of 3 main parts—— CellsBMSBattery Box.


The main function of the battery cells is to store and release energy.

BMS is the part to the oversight and management of the lithium battery pack.

Furthermore, the BMS function are main include:

  • Detecting battery temperature and balance current
  • Providing battery protection
  • Caculating the battery’s operational state
  • Continually optimizing battery performance
  • Reporting operational status to external devices

And the housing protects the internal battery pack. Insulate from external electrical appliances.

While the 4D battery is discharging and providing an electric current, the anode releases lithium ions to the cathode. Generating a flow of electrons from one side to the other.

When plugging in the device, the opposite happens: Lithium ions are released by the cathode and received by the anode.

This process creates an electrical current that powers the electronic devices.

For more detail info, please visit our article《How Do Lithium Ion Batteries Work?

How Long Do 4D Battery Last?

Lithium 4D batteries usually last for 4,000 times cycles. While lead acid batteries only last 1,000 to 1,500 times cycles.

Also the lithium 4D batteries are lower maintenance than lead acid batteries. 4D Lead acid batteries need to be kept topped up with water to protect the lead plates inside them. And they will become damaged if they are allowed to get too hot or too cold. However, the lithium battery are sealed and maintenance free.

Group 4D Lithium Battery
Group 4D Lithium Battery

How To Prolong The Life Of An 4D battery?

As we all know, Proper maintenance of the 4D battery, and compliance with the principles of battery use, which can greatly extend the life of the lithium battery.

Improper use of the battery will also shorten the life of the battery.

Anyway, here are a few tips to keep in mind to enable your 4D battery last longer.

Charging Tips

  • Regularly Charging. Under normal circumstances, when the battery is too low, there will be a reminder when the 4D battery has no electricity. At this time, you need to replenish the battery in time. Although the battery is too low, it will not lead to a direct safety accident, but excessive use will lead to over time. Damage to the battery structure.

(For more details about the lithium battery charging, please check our artricle 《Lithium Battery Charging: The Definitive Guide》)

  • Do not overcharge. The inside of the lithium battery cell is also composed of many components. The new battery is fine. If it is used for a long time, the function of which component may decline. So there will have an overcharge safety risk. Generally, Overcharging your 4D battery cause damage to it in the long run.
  • Use a suitable charger. Do not charge batteries with inappropriate chargers.

Using Tips

Avoid Completely Draining the 4D Battery

Once the battery indicator shows that the battery is getting low. Proceed straightaway to charge it.

Allowing the battery to completely drain out has an adverse effect on the lifespan of the battery. It could hamper performance.

When the battery is used up, please recharge the battery in time.

Maintenance Tips

The purpose of daily maintenance is to place the lithium battery in a suitable environment, thereby delaying the aging of the battery.

Here is two maintenance tips that we need comply with.

1. Protect against moisture.

2. And avoid direct sunlight.

Group 4D Lithium Battery Vs Lead Acid Battery

Depth of Discharge

To increase the number of charge/discharge cycles of the lead-acid 4D battery, its DOD should be kept around 50%

When lead-acid batteries are pushed down to 80-100% DoD, the number of charge/discharge cycles will reduced to 200-400 cycles.

On the other hand, when LiFePO4 cells are discharged to 80-100% DoD, the cycle life have no influence. The lithium 4D battery support 4000 cycles lifespan.

So the DOD and cycle life is a huge difference between both.

Battery Weight

Lithium batteries weigh only one-third of lead-acid batteries.

Battery Safety Features

As we all know, the lead-acid batteries are made up of two high-risk chemicals- sulphuric acid and lead. They could cause a safety hazard for operation people. There is a risk of sulphuric acid contacting skin, and eyes of those performing the maintenance procedure. So you need to ensure wearing of personal protective equipment (PPE) like splash-proof goggles, acid resistant apron, face-shield, and rubber gloves.

When you charge the lead acid batteries, may also produce an explosive mix of hydrogen (H2) and oxygen (O2) gases. So making temperature control very important to safety.

Also if the charging room is not ventilated appropriately, there is a risk of explosion. Among other measures, you need to install hydrogen sensors at the ceiling of the rooms where lead-acid batteries are charged.

However, the lithium 4D batteries are sealed. So there is no potential for acid spills, corrosion, sulfation, or any sort of contamination in the workplace.

IIn fact, so far, there have been no cases of safety hazards in lithium batteries.

Charging Time

The lead-acid 4D batteries can be recharged in 5-10 hours. While most lithium batteries can be fully recharged in 1-2h, with 2-5h being recommended.

What Is The Application Field Of 4D Battery?

Group 4D batteries are large and heavy commercial batteries. We ofen used it for for off grid energy storage system. RV storage batteries, for security, medical and standby applications. Also for powering various industrial vehicles and applications, etc.

Where To Get Group 4D Lithium Battery?

ELB technical team succeed to developed lithium 4D battery already. The capacity is 150Ah, and the voltage is 12 volts. If there are any other special questions. please connect with ELB technical team.

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