Many people have bad habits, often people are not at home to put the electric car battery on the car, the air switch is not turned off, put a few months do not ride. A few months later, when you come to ride again, you will find that the car is not charged and the charge can not 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 battery voltage is too low, and the charger output voltage difference is too large, then the charger is unable to charge into the battery.
This situation is commonly known as the battery is "starved to death". This battery block battery voltage is generally only about 5.6 V, will not exceed 6 V. For such a battery, most of the battery replacement. But a group of batteries for several hundred, so it is a bit of a pity to replace the battery, especially just after the warranty.
Here are five better ways to save the majority of such "starving" batteries. Note that most are not 100%.
A. Series connection method. In the whole group of batteries in series with another normal voltage of 12 volts battery. For example, the original car is 48V-20AH battery, then we connect another 12V-20AH battery in series. A 12V battery with sufficient power has a voltage of about 13V, after the series connection can raise the voltage of the whole group of batteries, and then use his original charger for charging, so that it is possible to charge the electricity into the charger, after plugging in the charger, the charger is a red light, at this time can be charged. When the charger turns green, take off that other battery in series. Then charge it normally again.
Second, parallel method. This method is slightly more troublesome. For example, the original vehicle is 48V-20AH battery, we have another set of parallel connection, 48V-20AH battery. We know that the voltage at each end of the parallel circuit is equal, the high voltage end will flow to the low voltage end. This method is also the method used by many battery dealers in detecting completely dead batteries. Then charging can also be done to achieve the purpose of charging. This principle is similar to that of to, connecting a battery in series, the principle is similar. Also the voltage of the whole group is raised up.
Third, low voltage charging method. Choose a small model of the charger for charging. For example, a group of 60V-20AH battery, then we are using 48V-20AH charger for charging. In most cases, this is also possible to charge in. The principle is also similar to the first, the charging voltage is closer to the voltage at both ends of the battery.
Fourth, a single battery charging method. Charging a single battery with a 12-volt motorcycle charger can activate the battery, but this charging is relatively slow, generally taking more than 7 hours to charge before the battery voltage slowly rises back to about 12V. If all single block charging is very time consumin
V. Special charger method. Tennant charger it is automatic recognition of battery voltage, no matter how many volts a group of battery voltage, can automatically identify the voltage, he can charge in. For example, the original car is 60V-20AH battery, now only 30V or less, it can still be charged inside. As the voltage rises, it can adapt to a higher voltage and then charge the battery. Telling, green good electric car, Jinpeng tricycle supporting this brand of charger.
In addition to popularize the lithium battery "starved" how to activate? Laptop battery or cell phone battery
Battery activation in the Lenovo power management software called "power scale calibration". When you use Everest to detect the power supply on the PC side, there is a "design capacity", followed by "fully charged capacity", if the two values are the same, you will see that the "battery loss" item below is 0%; Generally speaking, the "full charge capacity" of the battery that has just left the factory or has been placed for a long time without timely maintenance will be less than the "design capacity", at which time you will see that the battery loss is 1%. This means that the battery is not "fully charged", we need to "fully charge and discharge" (fully discharged after 12 hours of uninterrupted charging to more than) benefit fully "develop" the battery's "potential". This process of complete charging and discharging is called "activating the battery", Lenovo Thinkpad and other power management software has a "power scale calibration" function similar to the principle.
Personally, I think some old technology batteries such as NiMH need to be activated. Li-ion battery theory is the need to excite because of the need to form a protective layer of SEI in the negative terminal. But this process has actually been completed in the production test phase. Personally, I think the consumer's misconceptions about the battery caused by such a service.
Your cell phone battery "starved", can not be turned on and charged, it needs to be activated! First of all, the so-called starvation is the battery has been dead or very low power caused by the battery can not be recharged phenomenon. Then the so-called activation currently has two ways: one is to use the universal charge for about 20 minutes to activate. Second, to the cell phone repair store has a more professional voltage slightly higher, such as 12 volts of power to activate, specifically the power supply positive and negative in the battery positive and negative a few dozen seconds or even a few minutes to it through the electricity, through it! Finally, after activation can be charged with a direct charge as the original, will not have a significant impact on the life is not known
Charging with instruments. (If the above does not work, and the battery is not faulty, you need to use the 'regulated power' activation, the black line connected to the negative terminal of the battery, the red one connected to the positive terminal of the battery, charging voltage up to 3.8V, you can) use the device of lithium batteries, the first use without charging 12 hours, which is not necessary!
