The difference between Lipo and NiMH
Mar 5th 2019
The biggest difference between NiMH and LiPo batteries is the chemical properties that enable the charging of the batteries. NiMH (Nickel-metal hybrid) uses nickel-based technology and LiPo (Lithium Polymer) batteries use a lithium-ion technology.
What the battery types have in common is that they both store a certain amount of energy depending on their capacity. Batteries can be manufactured with different voltages and capacities by installing battery cells in series or parallel inside the battery pack. One should be careful not to drop the batteries or damage the cases of the battery cells because it can cause a short circuit. Both battery types must be disposed of properly as hazardous waste.
The batteries differ in their properties and uses.
NiMH batteries are easier to use. They must be fully discharged before charging and must be charged full before storing (Unless Manufacturer tells otherwise. Exampl. Traxxas). NiMH battery chargers are also very simple.
LiPo batteries don't have to be fully discharged and they must be stored with a 50-70 % charge level. The charging must be done with a charger with balance charging. It is good to charge and store LiPo batteries in a LiPo safe bag.
Properties and remarks on NiMH batteries:
- Easy and worry-free charging and storing "Safe choice for beginners"
- Cheaper to manufacture
- A common battery type in home appliances and devices
- Rated voltage of cells 1.2V
- Must be fully discharged before charging
- Storing fully charged (Unless Manufacturer tells otherwise. Exampl. Traxxas)
- Batteries are built with standard sized cells with metal cases
- "Memory effect": Batteries must always be fully discharged in order to keep full capacity available
- Easy to use with the right devices
- Manufacturing process is more complicated
- Becoming a common battery type in home appliances and devices
- Rated voltage of cells 3.0 V when discharging
- A charger with balance charging must always be used for charging
- Storing with 50-70 % charge level (Voltage per cell 3.85V-3.9V)
- A LiPo safe bag must be used when charging and storing
- Lighter than NiMH
- Can be built in different sizes
- "Memory effect": almost non-existent, batteries don't have to be fully discharged before recharging