C-rate refers to the charge/discharge current value ratio to the battery’s rated capacity.

The C-rate of the lithium-ion battery decides how fast the battery can be fully charged or how fast it can be fully discharged. By knowing the C-rate, people can tell the battery charge or discharge speed is fast or slow.

Take a 2000mAh lithium-ion battery as an example. Its rated capacity is 2000mAh.

If the discharge current is 2000mA, it will require 1 hour to be fully discharged, then the C-rate is 1C.

If the discharge current is 4000mA, then it will require 0.5 hours to be fully discharged, and the C-rate is 2C (4000mA/2000mA=2C)

If the discharge current is 400mA, then it will require 5 hours to be fully discharged, and the C-rate is 0.2C (400mA/2000mA=0.2C)

Herewith is the formula to make it more clear:

D-rate (C) = Charge/discharge current(IN)÷ Rated capacity(Ah)

When discharging with N times the current of the 1C capacity of the lithium battery, and its discharge capacity is more than 85% of the 1C capacity of the battery, we consider the discharge rate of the battery to be N times.

The C-rate of a battery is an important consideration when designing a charge or discharge system because it affects the battery’s performance and lifetime.

Bygelyks, charging or discharging a battery at a high C rate will cause the battery to heat up and degrade faster, while charging or discharging at a low C rate can extend the life of the battery, but will take more time.

Op it stuit, the charging rate supported by lithium batteries is only 1.3C. Yn tsjinstelling, graphene fast charging batteries have 6C fast charging capabilities and can be charged to 85% in 8 minuten, wat lykweardich is oan de tiid dy't it nimt om in tank mei brânstof te foljen foar in brânstofauto.

Meastal, wy neame in lithium batterij ûntslein by 1C in standert batterij, in lithium batterij ûntslein by 2C-10C in lege-rate batterij, en in lithium batterij ûntlaad oer 10C in hege-rate batterij.

Lithium-batterijen wurde brûkt yn ferskate produkten ôfhinklik fan it taryf.

It hege taryf fan 'e lithiumbatterij is relatyf oan it gewoane taryf, fertsjintwurdiget de lading en ûntlading kapasiteit fan de lithium-ion polymer batterij.

As in gewoane batterij gau opladen wurdt, it is maklik te feroarsaakje lithium delslach by de negative elektrodes, resultearret yn fersnelde prestaasjes degradaasje fan de lithium batterij. Yn slimme gefallen, it kin in koartsluting yn 'e batterij feroarsaakje, wêrtroch in brân en eksploazje.

De prestaasjes fan lading en ûntlading fan lithiumbatterijen is direkt relatearre oan it migraasjefermogen fan lithiumionen by de positive en negative elektroden, elektrolyt, en de ynterface tusken harren. Alle faktoaren dy't de migraasjesnelheid fan lithium-ionen beynfloedzje (dizze beynfloedzjende faktoaren kinne ek wêze lykweardich oan de batterij syn Ynterne ferset), sil beynfloedzje de lading en ûntlading taryf prestaasje fan lithium-ion batterijen.