Is it possible to use 18650 batteries as motorcycle batteries?

Introduction Is it possible to use 18650 batteries as motorcycle batteries? While 18650 is an ordinary cylindrical lithium battery, it is very different from the electric starting battery required for motorcycles.

Is it possible to use 18650 batteries as motorcycle batteries?

While 18650 is an ordinary cylindrical lithium battery, it is very different from the electric starting battery required for motorcycles. First of all, a huge amount of current is required to start the motorcycle instantly. Considering the capacity of 18650, the number of parallel connections will be very large. Second, this is not achievable in terms of volume alone.

Can lithium iron phosphate batteries be used as starting batteries for cars?

Lithium iron phosphate batteries can be used as starting batteries. Lithium iron phosphate batteries are currently the only ones to have been approved. Oven temperature, overload and short circuit tests. Iron that does not catch fire is the product of countless fusions and is currently the most stable element, so iron-lithium batteries are very safe.

Differences in characteristics Itst well known that lead acid batteries have the shortest lifespan and will be discarded after an average of 350 full charges and discharges, the reason is that each discharge process will have different degrees; vulcanization of the plates, especially in winter, multiple layers of crystals appear, a considerable part of which cannot be restored during the loading process.

As a result, the electrolyte cannot effectively penetrate the crystals of the plates and react with the active materials, and the density of the electrolyte will also change significantly after electrolyte failure and strong vulcanization of the plates. The battery performance will drop by 2-3 or more, and the battery will be discarded at that time.

Theoretically, a car battery has a longer lifespan, because as long as you leave the car directly after turning off the engine, the static current andthe power consumption of the anti-theft system is very low, and it can be fully charged by driving every three to five days; If the vehicle is used in this way, the starter battery can actually be used for about 10 years.

However, you will choose to install an auxiliary battery or use it as parking power for the RV. There is no doubt that it will be used long after the engine has stopped if; this use is used more frequently, the use of auxiliary battery The service life cannot be longer than that of a battery car. The important thing is that the original car battery is also easily damaged, resulting in high frequency power loss (unable to start the vehicle). Therefore, lead-acid batteries are not suitable for use as parking power sources, but iron and bed batterieshium are. no problem.

Battery life is very long. The current highest standard battery can be used as a power battery for 1 million kilometers, and the SOC only drops by 20%! This is the “10,000 km/-2‰” standard. For household electric vehicles, you no longer need to worry about the cost of battery replacement, and even commercial models such as cruise cars and online ride-hailing vehicles can meet this requirement. .

NCM nickel-cobalt-manganese battery is currently the main option for new energy vehicles. Its characteristics are more ideal than those of the NCA but not particularly ideal; The lithium iron phosphate battery is currently the only battery that has exceeded oven temperature. , overload and short circuit Test the type that does not catch fire. Iron is the product of countless fusions and is currentlyent the most stable element, iron-lithium batteries are therefore very safe.

(Images/Text/Photos: Q&A) Xpeng Motors P7 Model Y AION V Ideal ONE Weilai EC6 Model Network can be used as a car starting battery. Lithium iron phosphate batteries are used by more and more people as secondary batteries. The main advantage is that lithium iron batteries have high capacity density. The volume and weight of lithium iron batteries of the same capacity are much smaller than those of lead acid batteries. .

At present, battery manufacturers have not launched lithium iron phosphate batteries. According to the characteristics of lithium iron batteries, they can theoretically be used to replace lead-acid batteries. The characteristic of car batteries is that they can discharge at high currents.lifted, and the current can reach hundreds of amps at start-up. After starting, it can be charged with high current, without memory effect, and the charging requirements are not high, as long as the voltage is not higher than 14.5V. There is no need to charge constant current, it can be charged at any current, with low risk and relatively stable performance. The disadvantages are low energy density, high self-discharge rate, bulkiness and short lifespan.

Lithium iron phosphate batteries were once widely used in electric vehicles, but were gradually replaced by ternary lithium batteries due to their low energy density. The iron battery that BYD is proud of is the lithium iron phosphate battery. Currently, it is gradually being replaced by ternary lithium batteries. The battery cell voltage atlithium iron phosphate is 3.2 V, and the charging cut-off voltage is 3.6 V. If it is used in a car and requires four series in parallel, the voltage will be between 12.8 and 14.4 V. This voltage poses no problem for starting the car.

Lithium iron battery supports high current discharge, standard discharge current is 3-5C, high current continuous discharge supports 10C and discharge current instantaneous can reach over 20 C. This is why a small power bank can start a car. For example, a lithium iron battery with a capacity of 12V8ah can easily reach over 160A when instantly discharged to a current of 20C! For a lithium iron battery with a capacity of 20 Ah, the instantaneous starting current can reach more than 400 amps, making car starting stress-free.

Although branded battery manufacturers doAlthough not launched lithium iron batteries for vehicles, some people are already assembling lithium iron batteries for sale. It can directly replace AMG batteries, and its capacity density is higher than that of lead-acid batteries, so it is much lighter. The starting current is also much higher than that of a lead-acid battery of the same capacity, and the voltage is also higher than that of a lead-acid battery. Therefore, the vehicle will start more easily than lead acid batteries. However, 4-string iron-lithium batteries need to be equipped with protective plates, so the stability of the battery is definitely not as good as that of lead-acid batteries. In addition, there is a certain risk of spontaneous combustion, the long-term effect of which has not yet been verified. This is also the reason why battery manufacturers have not released lithium batteries fer.

(Images/Text/Photos: Pacific Automotive Network Calling the Beast Q&A)

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