Identify The Real Batteries

How can you tell if 18650 lithium battery cells are of good quality?

Use the multimeter to check DC equipment that is higher than the battery's rated voltage. For example, test a 9V, 1.5V dry battery with DC10V and DC2V gear tests.


Connect the positive and negative electrodes of the lithium battery with test needles after selecting the gear based on the voltage rating of the lithium battery. When the test voltage is higher than or equal to the battery's rated voltage. The battery appears to be in fine working order. The battery can be used on electrical equipment with a short discharge current when the test voltage is less than 10% of the rated voltage.

What Is The Best Way To Identify Batteries?

1. The A-product 18650 electronic cigarette battery has a beautiful appearance, the battery enclosure is clean and wrinkle-free, and the device has a strict battery follow-up logo, according to a visual inspection of the appearance of the 18650 battery. The inkjet logo on the battery film displays a comprehensive description.

2. When comparing the weights of the two 18650 batteries, the A lithium battery is clearly heavier than the faulty 18650 battery. When you hold the 18650 defective battery in your hand, it is clear that it is only a shell.

3. The 18650 battery is placed on an electronic scale for weighing, and the weights are compared; the weight of a product 18650 battery, that is, a real 18650 battery, is normally around 43g, whereas the weight of a fake 18650 battery is probably at least 10g. There are also fake 18650 batteries scattered about with mud. Mud 18650 batteries are typically 30 grams in weight.

What Is The Best Way To Identify Batteries?

1. The A-product 18650 electronic cigarette battery has a beautiful appearance, the battery enclosure is clean and wrinkle-free, and the device has a strict battery follow-up logo, according to a visual inspection of the appearance of the 18650 battery. The inkjet logo on the battery film displays a comprehensive description.

2. When comparing the weights of the two 18650 batteries, the A lithium battery is clearly heavier than the faulty 18650 battery. When you hold the 18650 defective battery in your hand, it is clear that it is only a shell.

3. The 18650 battery is placed on an electronic scale for weighing, and the weights are compared; the weight of a product 18650 battery, that is, a real 18650 battery, is normally around 43g, whereas the weight of a fake 18650 battery is probably at least 10g. There are also fake 18650 batteries scattered about with mud. Mud 18650 batteries are typically 30 grams in weight.

Keep in mind that:

It is important to note that the voltage of rechargeable batteries is often 15% to 25% lower than that of comparable batteries. The 5# battery, for example, has a voltage of 1.5V, whereas rechargeable batteries have a value of 1.2-1.3V. As a result, the battery's rated voltage should be double-checked.


The 3.7V 18650 lithium battery now has a life span of 500 to 1000 cycles, whereas the 3.2V 18650 lithium battery has a lifespan of more than 2000 cycles. Of course, the concept is that a certified battery manufactured by a regular manufacturer will have a very short life if it really is a defective or fake battery.