Key Characteristics of a good Battery:
The usual concern among people who wish to buy an Electric vehicle is the range of KMS it can last on a single charge. The general range of EVs in India right now for daily commutes is 150-300 km. Whereas high-end models offer up to 400 km. The lesser Wh/km consumed the longer the operation of a battery pack
2. Lower charging time:
Depending upon the application the charging time for an EV battery may vary from an hour to 8 hours.?
Nowadays, using Rapid charging technology, you can charge batteries in 30-40 minutes up to 80% of their capacity.
3. Lifespan/Service life:
is the number of charge cycles a battery can undergo before its capacity falls down significantly. You might have seen this happening with your phone's battery over time too.
4. Low Self-discharge rate:
The self-discharge rate is the rate at which a battery loses its power on its own when not under use. Lithium-ion batteries have a low self-discharge rate and are hence more effective.
5. High Energy density:
It is the energy that can be derived per unit volume of the weight of the cell. Higher the energy density the smaller the size of a battery and hence it is lighter in weight. This is an important criterion in Electric vehicles as the weight of an automobile directly impacts the efficiency.
6. Temperature dependence:
An ideal Battery should be able to operate within a range of temperatures with minimum or no drop in its operating capacity.
Cold weather slows down the chemical and physical reactions that make batteries work, specifically conductivity and diffusivity, leading to longer charging time. A good battery management system (BMS) will restrict high voltage or fast charging if the battery is too cold.