Advantage of 21700 Battery

Will 21700 battery replace 18650 in electrical cigarette industry? I'm not sure. But let's see the advantage of 21700 battery first.

1. Battery Density will increase

According to Tesla, Power density of 21700 goes up to 300 Wh/kg, which is about 20% more than current 8650 batteries that rates at 250Wh/kg. so apparently 21700 battery power density is better than 18650 batteries, as it can increase by 20% or more Compared with 18650.

2. Battery Pack Price Decrease By 9%

Tesla further reveals the price of the 21700 lithium battery pack(with BMS) is expected to be sold for 155 USD/kWh, while 18650 size battery pack about US $185/kwh, that's why you can notice a drop in prices by 9%.

3. More Miles to Go

Samsung said that after it was switched to the new 21700 batteries, the battery pack could reduce about
10% of its weight compared to the current 18650 battery design. By reducing EV battery weight, and the vehicle's energy density would be also improved, from this point of view, the EV car can go miles more.


21700 battery may be a tendency in future, but I think this requires a lot of support. But if you have 21700 battery, I think you must need 21700 charger too.