A Guide to Understanding LiPo Batteries – (by Roger’s Hobby Center) – A comprehensive walk through of Lithium Polymer batteries (aka “LiPo” batteries). These are very common in robotic sports and require special handling to use properly and safely.
| LiPo Batteries | NiMH Batteries |
| Pros – Much lighter weight, and can be made in almost any size or shape. – Much higher capacities, allowing them to hold much more power. – Much higher discharge rates, meaning they pack more punch. | Pros – Longer lifespan than LiPos, usually into the 1,000 cycles range – Much less sensitive, and doesn’t usually pose a fire risk – Simpler chargers and routines required for use. |
| Cons – Much shorter lifespan; LiPos average only 150–250 cycles. – The sensitive chemistry can lead to fire if the battery gets punctured. – Need special care for charging, discharging, and storage. | Cons – Much heavier, and limited on size. – Lower average capacity, and less efficient overall. – Lower discharge rates; they lack tremendous punch. |
Helpful Links and Additional Resources
Battery Capacity Calculations – Robert Cowan’s great Youtube video tutorial on how to choose the right amp hours needed for your bot to compete without running out of power mid-match!