Robotics developers often spend most of their time working on perception algorithms, navigation software, and AI models. But when a robot fails in the field, the problem is frequently not software—it’s power.
Understanding how lithium battery systems work can help developers build more reliable robots.
Key Battery Specs Developers Should Understand
Even if you’re primarily a software engineer, several battery parameters are important.
Voltage
Voltage determines the power delivered to motors and electronics.
Common robot voltages include:
- 24V
- 36V
- 48V
Stable voltage output ensures consistent robot performance.
Capacity
Battery capacity is measured in amp-hours (Ah).
Higher capacity means longer operating time.
Example:
24V 20Ah battery
≈ 480Wh energy
C-Rate (Discharge Rate)
Robots often require bursts of high power when accelerating or climbing slopes.
C-rate describes how quickly a battery can deliver energy.
For example:
- 1C discharge: full discharge in 1 hour
- 3C discharge: full discharge in 20 minutes
Industrial robots often require high-discharge lithium battery packs.
Battery Telemetry and Robot Software
Modern battery packs include smart BMS systems that provide data such as:
- voltage
- current
- temperature
- state of charge
- battery health
Developers can integrate this data into robot software to enable features like:
- low battery warnings
- automatic charging navigation
- battery health diagnostics
Common Power Issues in Robots
Developers often encounter problems such as:
- sudden voltage drops under load
- inaccurate battery percentage readings
- unexpected robot shutdowns
These issues often stem from:
- insufficient battery discharge capability
- poor BMS integration
- improper battery sizing
Why Custom Battery Packs Matter
Off-the-shelf batteries rarely match the exact needs of autonomous robots.
Many robotics companies therefore work with lithium battery manufacturers that design custom battery packs optimized for:
- robot size constraints
- power requirements
- communication interfaces
- safety standards
Final Thoughts
Reliable robots require reliable power systems.
Even for software developers, understanding the basics of lithium battery design helps ensure robots operate smoothly, safely, and efficiently in real-world environments.