6-STEN-140-M Military Battery Replacement [Tank Battery]

04 May, 2023

By hqt

6-STEN-140-M Military Battery Replacement [Tank Battery]

Maximizing Performance and Reliability

The 6-STEN-140-M is a military-grade battery pack commonly used in a wide range of applications, such as communication devices, GPS units, night vision goggles, and other technical equipment. Due to its heavy-duty nature, this battery pack is built to withstand harsh outdoor conditions and provide consistent power to the devices it serves. 

However, like any other battery, the 6-STEN-140-M has a limited life span, and replacing it periodically ensures optimal performance and reliability. 

This article will walk you through the process of replacing the 6-STEN-140-M military battery. Also, we will go through either the Nickel-Metal Hydride (NiMH) or Lithium batteries as the replacement solution..

Reasons for Battery Replacement 6-STEN-140-M

Since a battery is composed of chemicals and pure reactive metals that lose its efficiency overtime. The reasons for a faulty battery can be much commonly similar like any other product with a non-lead acid battery.

There are several reasons why a 6-STEN-140-M military battery may need to be replaced:

Battery degradation:

The term battery degradation refers to the phenomenon in which batteries lose their capacity and ability to hold a charge over time. This is because the purity of each element or compound in a battery is degraded overtime due to external and internal conditions. Therefore, resulting in reduced performance and shorter run times for the devices they power.

In the context of the 6-STEN-140-M military battery, timely replacement is crucial to ensure that essential military equipment continues to function effectively and reliably.

External Damage: 

When it comes to Military products, the first thing is a harsh environment that should click in your mind.   batteries are often exposed to harsh environments and may suffer from physical damage that can impair their function.

Battery Obsolescence:

Battery obsolescence in 6-STEN-140-M military batteries, may arise when more advanced battery technologies become available, offering enhanced performance, reliability, or other benefits that make the older battery model less desirable. 

When replacing a battery due to obsolescence, it is essential to evaluate the specific requirements of the device and the operating environment to ensure that the new battery technology is compatible and capable of meeting the necessary performance criteria.

How to Replace the 6-STEN-140-M Military Battery

The replacement of 6-STEN-140-M military battery involves multiple steps that also ensure safety precautions along with battery replacement.

To replace the 6-STEN-140-M military battery, follow these steps:

Safety first: 

Before attempting to replace any battery, ensure that you are working in a well-ventilated area, wearing proper safety gear such as gloves and goggles, and using the correct tools for the job.

Power down the device: 

Turn off the device that the battery pack is connected to and disconnect it from any external power sources.

Access the battery compartment: 

Locate and open the battery compartment on the device. In some cases, this may require removing screws or other fasteners.

Remove the old battery: 

Carefully disconnect the old battery pack from the device, taking note of the battery's orientation and any connecting wires.

Inspect the new battery: 

Before installing the new battery in 6-STEN-140-M Military, inspect it for any visible signs of damage or defects. If any issues are found, do not use the battery and contact the supplier for a replacement.

Install the new battery: 

Connect the new battery pack to the device, ensuring that the wires and connectors are properly aligned. Secure the battery in place and close the battery compartment.

Test the device: 

Turn on the device and ensure that it is operating correctly with the new battery installed. If there are any issues, retrace your steps to ensure proper installation.

NiMH vs. Lithium Batteries, Which One Works Well For 6-STEN-140-M?

When replacing the 6-STEN-140-M military battery, you may need to choose between Nickel-Metal Hydride (NiMH) and Lithium batteries. Each type has its advantages and disadvantages, which we will outline below.

NiMH (Nickel-Metal Hydride) Batteries:


NiMH batteries are generally more affordable than Lithium batteries, making them an attractive option for budget-conscious users. It can be used in 6-STEN-140-M Military products.

Environmentally friendly: 

NiMH batteries are less harmful to the environment than their Lithium counterparts, as they contain fewer toxic materials and can be more easily recycled.

Performance in cold temperatures: 

NiMH batteries perform better than Lithium batteries in colder temperatures, making them a suitable choice for use in extreme environments.

(Li) Lithium Batteries:

Higher energy density: 

Lithium batteries have a higher energy density than NiMH batteries, meaning they can store more energy in a smaller package. This results in longer run times of 6-STEN-140-M Military and potentially lighter devices.

Longer life span: 

Lithium batteries typically have a longer lifespan than NiMH batteries, meaning they need to be replaced less frequently. This can be beneficial for military applications where reliability and low maintenance are crucial.

Faster charging: 

Lithium batteries generally charge faster than NiMH batteries, allowing for quicker turnaround times when multiple charging cycles are required.

Better performance in high temperatures: 

Lithium batteries maintain their performance better than NiMH batteries in high-temperature environments, making them a suitable choice for use in extreme conditions.

Lower self-discharge rate: 

Lithium batteries have a lower self-discharge rate than NiMH batteries, which means they retain their charge for longer periods when not in use.


The 6-STEN-140-M military battery is an essential component of many military devices, and replacing it periodically is crucial for maintaining optimal performance and reliability. When choosing between NiMH and Lithium batteries, consider factors such as cost, environmental impact, performance in varying temperatures, energy density, life span, charging time, and self-discharge rate.

Both NiMH and Lithium batteries have their merits, and the choice ultimately depends on the specific requirements of the device and the operating environment. By understanding the advantages and disadvantages of each battery type, you can make an informed decision and ensure that your military equipment continues to function effectively and reliably.