How to choose the right battery for your AGV or AMR

Selecting the optimal battery for your fleet of Automated Guided Vehicles (AGV) or Autonomous Mobile Robots (AMR) is crucial for efficient and reliable operation in whatever application you use them for.

Table of Contents:

Essential insights from our AGV battery selection guide:

Selecting the best battery for AGV fleets requires balancing high-burst power needs with long-term maintenance costs and charging speeds.
Modern lithium-ion and LiFePO4 chemistries outperform traditional lead-acid options by offering higher energy density and significantly longer cycle lives.
Choosing the right power source is a strategic investment that directly impacts the overall efficiency and operational lifespan of autonomous mobile robots.

Selecting the optimal battery for your fleet of Automated Guided Vehicles (AGV) or Autonomous Mobile Robots (AMR) is crucial for efficient and reliable operation in whatever application you use them for. The battery not only powers their motors but also influences their performance and maintenance needs, ultimately culminating in their overall efficiency and – importantly – your costs. We’ve prepared a comprehensive AGV battery selection guide to help you understand how these machines operate and how the different batteries available on the market today fill those needs.

Why is understanding the power needs of AGVs and AMRs important?

AGVs and AMRs require stable and reliable power sources to ensure precise navigation and consistent sensor performance during complex material handling tasks. By accurately assessing duty cycles and load requirements, fleet managers can select the best battery for AGV operations, preventing sudden downtime and optimizing the total cost of ownership.

Before we dive into what the best battery for AGVs is, let’s briefly explain what we’re dealing with here.

AGVs (Automated Guided Vehicles), follow predefined paths to move around between different points and perform tasks like loading, unloading, and other kinds of material handling.
AMRs (Autonomous Mobile Robots) are similar in general operation, but they differ strongly in regard to what determines their movement. Here, instead of fixed pathways, it’s smart navigating systems and advanced, AI-powered sensors that guide them, making them more adaptable to changing environments.

What remains unchanged, though, is that both AGVs and AMRs require reliable and efficient power sources for optimal functioning. Just as in the case of power tool batteries or e-bike batteries, the variety of available choices makes it easy to get confused. That’s why, in the next section, we’ll break down the most commonly selected options for AGVs and AMRs, and hopefully point you in the direction of what the best battery for an AGV is in your case.

AGV battery selection guide

A professional AGV battery selection guide compares different chemistries like lead-acid, lithium-ion, and LiFePO4 to match specific operational demands. While lead-acid provides high surge current for heavy lifting at a lower price, lithium-based systems offer the faster charging and high energy density required for high-utilization, automated logistics environments.

Let’s take a look at the battery types commonly used in AGVs and AMRs:

AGV batteries

Here, we encounter a battle between the old and the new:

Lead-Acid Batteries: Somewhat counterintuitively, many AGVs still run on lead-acid batteries, which at this point are a dated technology, to say the least. However, because AGVs are heavier than AMRs, they often require energy in big bursts to maintain operation – something lead-acid batteries can easily provide. On the flip side, they are heavier, bulkier, have shorter lifespans, and charge much slower than their modern counterparts.
Lithium-Ion Batteries: These are becoming the gold standard in nearly all industries. Li-ion batteries are more reliable, cleaner for the environment, easier to maintain and charge, and last for many, many more charge cycles compared to lead-acid. Their only downside, really, is that they’re more expensive.

AMR batteries

In AMR batteries, lithium-ion batteries are just as prevalent due to their long life, fast charging, and high energy density. But generally speaking, AMRs work slightly differently in that they’re lighter and less intense to operate, so lead-acid batteries have not really found widespread use here.

In their place, another key player emerged – the lithium iron phosphate batteries (LiFePO4). These offer enhanced safety due to their thermal stability, long cycle life, and minimal maintenance requirements. This makes them ideal for continuous and dynamic AMR operation.

How do you choose the best battery for AGV and AMR fleets?

Choosing the best battery for AGV or AMR fleets involves evaluating operational intensity versus long-term ROI goals. For heavy lifting with lower upfront costs, lead-acid remains an option, but for operations requiring maximum uptime, fast charging, and zero maintenance, lithium-ion or LiFePO4 batteries are the superior long-term strategic investment.

As with everything, the choice will come down to your needs. When high-burst power for heavy lifting at a lower cost is what you want to prioritize, lead-acid might still be an option worth considering despite its significant drawbacks.

However, for AGVs operating in less intense conditions, and especially for AMRs that demand longer operation, faster charging, and minimal maintenance, lithium-ion or LiFeEPO4 batteries are clearly the superior choice. Their long-term value is greater even in spite of the higher initial investment. Plus, lead-acid industries do not see nearly as much innovation by today’s standards, meaning the other options will always outperform in the long run thanks to improvements to various systems and components, like the crucial BMS.

Final thoughts on choosing robotic batteries

Selecting the right battery is a critical decision for your enterprise and a big investment, too. It should encompass understanding operational needs and estimating the breadth of the upfront cost you’re ready to bear in exchange for longevity and efficiency.

What key factors should you consider when selecting a battery for an AGV (Automated Guided Vehicle) or AMR (Autonomous Mobile Robot)?

You should assess the vehicle’s power needs, including voltage and capacity requirements, duty‑cycle (how long it needs to run), and performance demands (such as burst power for heavy lifting). Matching the battery chemistry to operational needs (e.g., durability vs. upfront cost) is critical.

How do battery chemistry types compare and which are appropriate for AGVs or AMRs?

Lead‑acid batteries are lower cost and provide high surge current but are heavy, bulky, slow to charge and have shorter lifespan. Lithium‑ion batteries offer higher energy density, faster charging, longer cycle life and lower maintenance costs, making them generally better for AMRs and many AGVs. For high‑duty AMRs, lithium iron phosphate (LiFePO4) variants provide extra safety, long life and minimal maintenance.

How should you decide which battery type to choose for your specific AGV or AMR application?

Evaluate your application’s requirements: for heavy‑load AGVs that require large bursts of energy at lower cost, lead‑acid may still be considered despite drawbacks. But for operations demanding long runtime, fast charge, compact size, minimal maintenance (especially AMRs or modern AGVs), lithium‑ion (including LiFePO4) is the superior long‑term investment. Consider upfront cost versus total cost of ownership and the expected operational environment.

Sources

Material Handling Institute (MHI). Automated Guided Vehicles (AGV) Best Practices and Safety.

IEEE Robotics and Automation Society. P2940 – Standard for Reliability and Performance Evaluation of Autonomous Mobile Robots.

International Federation of Robotics (IFR). World Robotics 2024: Service Robots and Warehouse Automation Trends.

National Institute of Standards and Technology (NIST). Performance Evaluation of Mobile Robot Autonomous Navigation.

About the Author

EMBS

Leading manufacturer of advanced battery systems with a market presence of over 25 years. We specialise in rechargeable lithium-ion batteries, producing a wide range of systems with varying power and capacity.