Lithium-iron battery test

For a long time there wasn't anything in the sun. The gold coins in the hands were also left behind by the lucky house. Just point to fresh things and earn some gold coins. .

Batteries are the most important source of power for our contacts. There are two main types of conventional AA batteries and AA batteries: nickel-metal hydride rechargeable batteries and alkaline dry batteries. But in these two years, lithium iron batteries began to enter our field of vision. This kind of battery is not currently propaganda efforts, many of my friends even from millet to launch lithium iron battery news to know that there is such a new type of battery. Here is the first to make a science (universal girl):

"Different from ordinary alkaline and carbon batteries, the cathode material is ferrous disulfide (FeS2), and the negative electrode is metallic lithium (Li). The typical capacity is 3000mAh and the minimum capacity is 2900mAh. Compared with the traditional alkaline battery, it has the following advantages: : Compatible with 1.5V alkaline batteries, carbon battery electrical appliances; suitable for large current discharge; sufficient power, its actual discharge capacity exceeds the commercial primary battery on the market; temperature range is much wider than other primary batteries, low temperature Excellent performance, the official operating temperature reference -40 °C to 60 °C; small size, light weight, anti-leakage; low self-discharge, can be stored up to 10 years; does not contain harmful materials, no mercury and chromium from raw materials Really zero pollution."

This time, we got the No. 5 and No. 7 batteries that are resistant to the time. Let's take a look at the advantages of the non-rechargeable battery, which is worth a pair of 10 bucks. This will make it worthwhile to pay for it. .

When the No. 5 battery was resistant, it used 4 sections with a battery box, which was quite practical. The use of a blue-and-white gradient in the color scheme seems to be more comfortable.

The 7th battery was packed in 2 carton boxes. For the coating, bright sparkling coats are used to make it more eye-catching.

One: weight

The weight of a single AA battery is 15.5 g.

And Nanfu reached 23.5g

His wife loves 25.9g, which is more than 10g, which is still very obvious.

On the 7th battery, we have a weight test with Logitech's wireless keyboard 400g

Ordinary batteries have 409g, and the gap between two sections is 9g. It can be seen that the lithium iron battery does indeed have an advantage in terms of weight.

Second: voltage

We can see that the initial voltage of the lithium iron battery is very high at 1.8V, which is much higher than 1.5V for alkaline batteries and 1.2V for NiMH.

This feature, with a wowstick electric screwdriver is relatively good, can provide a greater torque and speed, the next time the sun with a wow screwdriver feel.

Three: discharge

I used the Goggle Charger to test the discharge of the next three batteries. I can see that the initial voltage of the lithium iron battery is very high, but the load voltage is only 1.5V.

The final result can be seen on the map. We can see that with the use of traditional alkaline batteries, the voltage drop is more obvious, which is why we feel that the power shortage is caused by the use of the traditional alkaline battery; and the discharge of the nickel-metal hydride battery It is relatively stable, this is when we use the flash until suddenly discovered that it does not flash to know that the battery is dead; and the lithium iron battery discharge is more interesting, even in the use of the process there is a rise, and then it is a relatively stable The discharge, but the overall voltage is still a bit higher, which is a feature I value more, more useful when working with an electric screwdriver.

Four: capacity

This is due to the discharge time is too long not measured, the official data given is the capacity of the 5th battery 3000mAh, which is much higher than the alkaline battery and nickel-hydrogen 2000mAh, which also allows us to use more time long.

In conclusion, we can see that the advantages of lithium-iron batteries are obvious: light weight, high voltage, stable discharge, low self-discharge, leak-proof, and low-temperature performance, so we still have reasons to choose of. However, the price of up to 10 yuan is still the biggest obstacle to its development. We must know that the love of a wife is only about 30, but the service life is much longer. Therefore, lithium-iron batteries face the object or those who are not bad, but the people who have relatively high requirements for battery weight and capacity, such as the color lover, often take a few flash shots, such as outdoor users, any can reduce the weight The opportunity is not missed by the crowd and those in the low temperature environment. I hope that with the advancement of technology, prices will become cheaper and cheaper. If it can be reduced to a much lower level than ordinary alkaline batteries, it will be an era of popularization. .

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