You are asking about the internal resistance of the 18650 battery. Generally, the internal resistance of the Samsung 18650-2200-5C is less than 35 milliohms. The internal resistance of ordinary 18650, such as Samsung 18650, is generally less than 80 milliohms, and the actual resistance is less than 65 milliohms.
The internal resistance of the 18650 lithium-ion battery, which currently works relatively well, is about 12 milliohms, and is generally around 13-15 milliohms because the impedance will affect; Battery performance, generally speaking, 50 milliohms is normal, 50-100 can be used, but the performance begins to degrade when it exceeds 100, it should be used in parallel, and when it exceeds 200 , they practically cannot be used.
If the 18650 lithium-ion battery is used for too long, the internal resistance of the lithium-ion battery will increasewill also lie.
Is the 18650 lithium battery with internal resistance of 0.5 milliohms bad?
If the lithium battery has no capacity and internal resistance, It requires a special internal resistance tester and capacitance tester.
The internal resistance of 18650 is generally between 20 and 65 milliohms, and a multimeter can only measure voltage.
18650 is the origin of lithium-ion batteries - the Japanese company SONY wanted to reduce costs at the time, a standard lithium-ion battery model is defined, where 18 means a diameter of 18 mm, 65 means a length of 65 mm and 0 means a cylindrical battery.
Common 18650 batteries are divided into lithium ion batteries and lithium iron phosphate batteries. The rated voltage of lithium ion battery is 3.7V, the charging cut-off voltage is 4.2V, the rated voltage of lithium iron phosphate battery is 3.2V, the charging cut-off voltage is 3.6V, the capacity is generally 1200mAh. 3000mAh, common capacity is 2200mAh-2600mAh.
No, around 1.7 is considered high internal resistance, and below 1.1 is normal.
Since the discharge current of 18650 lithium battery is generally relatively large, the internal resistance will be smaller. For example, the internal resistance of the Samsung 18650-2200-5C lithium battery is. less than 35 milliohms. Ordinary 18650, such as Samsung 18650, the internal resistance is generally less than 80 milliohms, and the actual resistance is less than 65 milliohms.
Common 18650 batteries are divided into lithium ion batteries and lithium iron phosphate batteries. The rated voltage of lithium ion battery is 3.7V, the charging cut-off voltage is 4.2V, the rated voltage of lithium iron phosphate battery is 3.2V, the tCharging cut-off voltage is 3.6V, the capacity is generally 1200mAh. 3000mAh, common capacity is 2200mAh-2600mAh.