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Many people have bad habits, often not putting the forklift battery on the car, not turning off the air switch, and not turning it on for several months. When I came back to use it a few months later, I found that the forklift was out of battery and couldn't be charged. The charger is plugged in, but the light is always green, even if it is plugged in for 24 hours, it is still green because the voltage of the forklift lithium battery is too low, and if there is a significant difference between the output voltage of the charger and the charger, the charger will not be able to charge the forklift battery.

This situation is commonly referred to as the battery being "locked". The voltage of this type of battery pack is generally only around 5.6V and will not exceed 6V. For such batteries, most of them are replaced. But it's a pity to just replace a set of batteries that cost hundreds, especially those that have just passed warranty.

Here are five good methods to save most of these "locked" batteries. Note that the majority is not 100%.

1、 Series connection method. Connect an additional 12 volt battery with normal voltage in series across the entire set of batteries. For example, if the original car had a 48V-20AH battery, we can connect an additional 12V-20AH battery in series. A fully charged 12V battery has a voltage of about 13V. After being connected in series, it can increase the voltage of the entire set of batteries, and then use its original charger for charging. This way, the battery can be charged in. After inserting the charger, the charger will turn red, and the battery can be charged in at this time. When the charger turns green, remove the battery that was connected in series. Then you can charge it normally.

2、 Parallel connection method. This method is a bit more complicated. For example, if the vehicle originally had a 48V-20AH battery, we will connect another set of 48V-20AH batteries in parallel. Everyone knows that the voltage in parallel circuits is equal everywhere, and the high voltage terminal will flow into the low voltage terminal. This method is also used by many battery dealers to detect completely dead batteries. Then charging can also achieve the purpose of charging. This principle is similar to connecting a battery in series. Also, increase the voltage of the entire group.

3、 Low voltage charging method. Choose a smaller charger for charging. For example, if it is a set of 60V-20AH batteries, we use a 48V-20AH charger for charging. In most cases, it can also be recharged. The principle is also similar to the first one, which brings the charging voltage closer to the voltage at both ends of the battery.

4、 Single battery charging method. Charging a single battery with a 12 volt motorcycle charger can activate the battery, but this charging process is relatively slow, usually taking more than 7 hours for the battery voltage to slowly rise to around 12V. If all single blocks are charged, it will take a lot of time.

5、 Special charger method. The Tianneng charger automatically recognizes the battery voltage, and regardless of the voltage of a set of batteries, it can automatically recognize the voltage and charge it. For example, the original car had a 60V-20AH battery, but now it is less than 30V, so it can still be charged inside. As the voltage increases, it fully adapts to the higher-order voltage before charging the battery. Tailing, Lvjia electric vehicles, and Jinpeng tricycles have been equipped with chargers from this brand.

How to activate lithium batteries when they starve to death? Laptop battery or mobile phone battery

Battery activation is called "power ruler calibration" on Lenovo power management software. When using Everest to test the power supply on the PC, there is a "design capacity" followed by "fully charged capacity". If the values of the two items are the same, you will see that the "battery loss" item below is 0%. Generally, for batteries that have just left the factory or have not been maintained for a long time, the "fully charged capacity" will be less than the "design capacity", and at this point, you will see that the battery loss is 1%. This means that the battery is not fully charged, and we need to perform a "full charge discharge" (uninterrupted charging for 12 hours or more after full discharge) to fully "develop" the potential of the battery. This complete charging and discharging process is called "activating the battery", and power management software such as Lenovo Thinkpad has a "power ruler calibration" function with a similar principle.

I personally think that some old technology batteries, such as NiMH, need to be activated. The theory of lithium batteries requires activation because a protective layer of SEI needs to be formed at the negative electrode. But this process has actually been completed during the production testing phase. I personally think that consumers have misconceptions about batteries, which leads to such services.

Your phone battery is starving and cannot be turned on or charged, so it needs to be activated! First of all, the so-called starvation refers to the phenomenon where the battery cannot be recharged when it has been running out of battery or when the battery level is very low. There are currently two ways to activate it: one is to use universal charging for about 20 minutes. The second is to provide a more professional and slightly higher voltage for mobile phone repair shops, such as a 12 volt power supply, to activate it. Specifically, place the positive and negative poles of the power supply on the positive and negative poles of the battery for several seconds or even minutes to power it on and connect it! Finally, after activation, direct charging can be used as before, and it is unclear whether it will have a significant impact on the lifespan.

Charge with an instrument. If the above methods do not work and the battery is not faulty, it is necessary to activate it with a "stabilized power supply". The black wire is connected to the negative pole of the battery, and the red wire is connected to the positive pole of the battery. The charging voltage can reach 3.8V. Using a lithium battery device, there is no need to charge for 12 hours on the first use, which is unnecessary!

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