LiPo Battery in Robotics

What is it?

A lithium polymer (LiPo) battery is a rechargeable battery that uses a polymer electrolyte instead of a liquid one. LiPo batteries offer high energy density, high peak discharge rates, and the ability to be made in flat, custom shapes — making them ideal for drones and mobile robotics.

How it works

A LiPo cell has a nominal voltage of 3.7 V (4.2 V fully charged, 3.0 V minimum safe discharge). Multiple cells in series form a battery pack — common configurations are 3S (11.1 V), 4S (14.8 V), and 6S (22.2 V). A capacity rating in mAh and a discharge rating in 'C' (e.g., 30C means it can deliver 30× its capacity in current) determine power output.

Real-world example

Every DJI drone, every racing quadcopter, most modern hobby robots, and many warehouse AMRs use LiPo batteries. They're available at every Indian robotics shop — Robu.in, RoboKart — starting from ₹400.

Why it matters for robotics

LiPo batteries enable the high power-to-weight performance modern robots need. They also need care — improper charging or puncture causes fires. Understanding LiPo handling is essential safety knowledge.

See also

• Battery Power Systems
• Motor Driver
• Brushless Motor