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.
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.
