Compared to many other battery technologies out there, the EESU battery has advantages in many areas, especially in terms of charge time and weight. Typically, electric cars, laptops, cell phones, and all manner of portable electronics are now powered by lithium ion batteries. The problem with these batteries is several layers deep.
One, Li ion batteries can be bulky when designed to power something like a car; for a typical laptop, to get about 5 hours of battery life, you need a reasonably large battery, bigger than the standard one they come fitted with. Two, li-ions have a finite number of discharge cycles – this means that as they are used over time, their charge capacity (how long they last) degrades, until they die. The more they are used, the faster they die, leaving a near useless husk of toxic chemicals. There are some agencies that take in old batteries and recycle them, but the fact remains that reliability over time must go down.
What this means for electric cars, is that a typical unit designed to power them would keep the range of the car limited between recharges, with that range constantly decreasing, until the large battery would need to be removed and replaced. This is seen in cell phones often – their batteries typically last a couple of years, just long enough in most contracts to be eligible for a phone upgrade. This leads to a massive amount of cell phone trash – instead of buying new batteries, which are nearly as expensive as the phones themselves, people just get new phones and throw their old ones away.
The way EESUs work is quite different. (Read more…)