The differences between 18650 and 26650 batteries are:
1. The rated capacity is different: IFR26650 rated capacity is 3000mAh and IFR18650 rated capacity is 1100~. 1400mAh.
2. The diameters of the two batteries are different: the diameter of IFR26650 is 26mm and the diameter of IFR18650 is 18mm.
3. The reference masses are different: the production quality of IFR26650 is 94 grams and the production quality of IFR18650 is 45 grams.
4. The volume of 26650 is larger than that of 18650 Large, their cell heights are the same, but their cell diameters are different. The diameter of 26650 cells is 26mm, while the diameter of 18650 cells is 18mm.
5. Battery capacity is different; Under the same battery material, the capacity of 26650 battery is higher than that of 18650. Assuming that the same material ternary be used, the 26650 battery is usually around 5200 mAh, while the capacity of the 18650 battery is mainly around 2600 mAh.
6. Application environments are different: 18650 lithium batteries are widely used in lighting lamp batteries, industrial support lithium batteries, power tool batteries, electric bicycle batteries, lithium batteries power, etc. lithium batteries are used in There are many integrated lithium batteries for solar street lights, energy storage stations, solar energy storage batteries, etc.
Related as follows:
Lithium battery (Li-ion, lithium-ion battery): Lithium-ion battery has the advantages of light weight, high large capacity and no memory effect, so it has been widely used ——Many digital devices use lithium batteriesthium-ion as power sources, although they are relatively expensive.
Lithium-ion batteries have a high energy density, their capacity is 1.5 to 2 times that of nickel-metal hydride batteries of the same weight, and they have a very low self-discharge rate. In addition, lithium-ion batteries have practically no “memory effect” and do not contain toxic substances, which is also an important reason for their widespread use.
In addition, please note that the exterior of lithium batteries is usually marked in English with 4.2V lithium ion battery (lithium battery) or 4.2V lithium secondary battery (battery secondary lithium battery), 4.2V lithium-ion rechargeable battery (rechargeable lithium battery), so when purchasing batteries, users should clearly see the signs on the battery pack to avoid confusing nickel-ion batteries cadmium and nickel-hydrogen with lithium batteries because they do not clearly see the battery type.
Ternary lithium batteries are better than lithium phosphate batteries.
1. Energy density: The energy density of ternary lithium batteries is higher, between 140 amp hours per kilogram and 160 amp hours per kilogram, giving them a longer lifespan, while the energy density of lithium iron Phosphate batteries are relatively weak at 90 to 120 amps per kilogram.
2. Low temperature resistance: Ternary lithium batteries have good low temperature resistance under low temperature conditions. For example, they can still maintain about 70% to 70% of the normal battery capacity at minus 20.80 degrees Celsius, while lithium iron phosphate batteries have poor low temperature resistance and can only maintainapproximately 50-60% of normal battery capacity at minus 20 degrees Celsius.
3. Charging speed: The charging speed of ternary lithium batteries is faster; The charging speed of lithium iron phosphate batteries is relatively slow.
4. A battery is a device that can convert chemical energy into electrical energy. It is mainly composed of a space part containing an electrolytic solution and a metal electrode. the concept of electromotive force, that is to say of unitary positive charge. The work done by the battery's non-electrostatic force (chemical force) when passing from the negative to the positive electrode through the interior of the battery.