If you’re in the market for a new battery or simply curious about the types of batteries available, you may have come across the term “energy density” before. Energy density is a measure of how much energy a battery can store per unit of weight or volume. The higher the energy density, the more power the battery can provide for its size.
Battery Energy Density Chart
| Battery Chemistry | Energy Density (Wh/kg) | Energy Density (Wh/L) |
|---|---|---|
| Lead-Acid | 20-30 | 30-50 |
| NiCd | 40-60 | 60-90 |
| NiMH | 60-120 | 90-180 |
| Lithium-ion | 120-200 | 180-300 |
| Lithium-ion Polymer | 130-230 | 200-350 |
| Lithium Iron Phosphate | 150-200 | 240-300 |
| Zinc-Air | 140-160 | 210-240 |
| Alkaline | 50-100 | 75-150 |
| Sodium-Sulfur | 200-270 | 300-400 |
| Flow Cells | 100-120 | 150-180 |
What is good energy density for a battery?
As a general rule, the higher the energy density, the better. A good energy density for a battery depends on what it will be used for. For example, if you’re using a battery to power a small device, such as a remote control, a lower energy density may be sufficient. However, if you need a battery to power a larger device, such as an electric vehicle, a higher energy density would be necessary.
Which battery has the highest energy density?
Currently, the lithium-air battery has the highest theoretical energy density, at around 11,400 Wh/kg. However, this battery is still in the research and development stage and has not yet been commercialized. Among commercial batteries, the lithium-ion battery has the highest energy density, with some models reaching up to 265 Wh/kg.
What is the energy density of battery fuel?
Battery fuel, also known as a fuel cell, has a much higher energy density than traditional batteries. In fact, the energy density of fuel cells can be up to 10 times higher than that of a lithium-ion battery. However, fuel cells are still in the early stages of development and are not yet widely available.
What is the energy density of AA batteries?
The energy density of AA batteries varies depending on the type of battery. Alkaline AA batteries, which are the most common type of AA battery, have an energy density of around 100-150 Wh/kg. Lithium AA batteries, on the other hand, have a much higher energy density, with some models reaching up to 300 Wh/kg.
In conclusion, understanding battery energy density is an important factor when choosing the right battery for your needs. While the highest energy density battery may not always be the best option, it is important to consider the energy density when making your decision.
