Batteries for AGVs, AMRs & Service Robots: A Selection Guide
Autonomous robots live and die by their batteries. Here's how to choose chemistry, size runtime, and pick a charging strategy — full-charge, opportunity charging or hot-swap — for maximum fleet uptime.
Why LiFePO4 dominates robotics
Sizing runtime
Charging strategy: the real uptime lever
| Strategy | How it works | Best for |
|---|---|---|
| Full charge | Charge fully between shifts | Single/double-shift operations |
| Opportunity charging | Top up in short idle bursts (LFP handles 1C) | Near-24/7 fleets, smart logistics |
| Swappable battery | Hot-swap a charged pack in seconds | Max uptime, heavy-duty AGVs |
BMS, communication & integration
Watch our pack assembly & test line on YouTubeSelection checklist
- Chemistry: LFP for cycle life & safety (NMC only if weight-critical).
- Capacity sized to the duty cycle + margin; verify peak current.
- Charging strategy matched to uptime: full / opportunity / swap.
- Smart BMS with CAN/RS485, correct system voltage, fast-charge rating.
Battery solution
Battery engineering for AGV and AMR fleets
For 24V and 48V robot platforms, start with LiFePO4 pack architecture, then confirm peak current, duty cycle, charging method and BMS communication with an engineer.
Frequently asked questions
What battery is best for AGVs and AMRs?+
LiFePO4 (LFP) is the standard choice: very long cycle life (often 4,000–8,000+ cycles), fast-charge tolerance, and high safety around people and equipment. NMC is used only when weight is the overriding constraint.
What is opportunity charging?+
Topping up the battery in short bursts whenever the robot is idle, instead of one long charge. Because LFP tolerates frequent partial charging, fleets stay on the floor almost continuously — usually the best strategy for high-uptime operations.
How long does an AMR battery last?+
Per charge, typically 8–12 hours of continuous operation. Over its life, a quality LFP pack lasts about 8–10 years of normal warehouse use, dropping below 80% capacity after roughly 4,000+ full cycles.
Should I use swappable batteries?+
Swappable packs make sense for maximum-uptime, heavy-duty AGVs where even short charging stops are costly — you hot-swap a charged pack in seconds. For most fleets, opportunity charging delivers high uptime without the spare-battery inventory.
