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The battery indicates that there is a label indicating whether it can be charged. The rechargeable battery label indicates that it can be charged, while the non rechargeable battery label prohibits charging.

English batteries, check if there is a rechargeable battery or if there is a NiMH nickel hydrogen battery, NiCd nickel cadmium battery. These all indicate that they can be charged. If you cannot find these words, then check if it indicates a 1.2V output. Usually, this also indicates the ability to charge. If none of them are available, please do not charge

It's simple to judge from several aspects:

1: The rechargeable battery is located on the upper part of the battery casing, and upon closer inspection, there is a circle of dents; Disposable batteries are generally not available, and some are also located near the lower part of the battery casing.

2: There are 2-4 small holes at the root of the positive terminal of the rechargeable battery, but some are blocked and cannot be seen.

3: Looking at the outer packaging of the battery, rechargeable batteries generally include: Recharge cycle、NI-MH、NI-CD、Nickel-Metal、1.2V， Capacity indicators such as 1500mAh. General logo for disposable batteries: 1.5V, etc

Rechargeable batteries, as the name suggests, are batteries that can be recharged and reused. Generally, rechargeable batteries have many advantages such as economy, environmental protection, sufficient power, suitability for high power, and long usage time. On the market, they are generally sold as No. 5 and No. 7 rechargeable batteries with limited charging times, which can be used in conjunction with chargers.

How to determine whether a battery is rechargeable

The five types of rechargeable batteries now are: nickel cadmium, nickel hydrogen, lithium-ion, lead storage, and iron lithium.

How to determine whether a battery is rechargeable

Nickel cadmium batteries have a memory effect and small capacity; Nickel hydrogen batteries have small memory effects and large capacity; Lithium ion batteries have no memory effect, thin body, and large capacity; Lead storage can be repeatedly charged and used; Lithium iron power is more abundant, safer, and lighter.

How to determine whether a battery is rechargeable

The voltage of rechargeable batteries is much lower than that of disposable batteries of the same model. For lead-acid batteries, the voltage is 12V; Lithium polymer, voltage: 3.7V; Nickel cadmium battery, voltage: 1.2V; Nickel hydrogen battery, voltage: 1.2V; Lithium ion battery, voltage: 3.6V.

How to determine whether a battery is rechargeable

Actually, I don't usually know much about alkaline batteries because I need to use them frequently. However, in reality, alkaline batteries cannot be charged as the original battery. Alkaline batteries are generally marked with donorecharge. In addition, alkaline batteries that have run out of electricity can recover a certain amount of energy after being left for a period of time, so intermittent use of alkaline batteries can have a longer working time. The alkaline battery identification can be checked to see if there is the word ALKALINE or the Chinese word "alkaline battery" printed on it.

1、 Rechargeable battery

1. Charge rate (C-rate)

C is the first letter of Capacity, used to represent the numerical value of the current during battery charging and discharging.

For example, when the rated capacity of a rechargeable battery is 1100mAh, it means that the discharge time can last for 1 hour at 1100mAh (1C). If the discharge time can last for 5 hours at 200mA (0.2C), charging can also be calculated based on this comparison.

2. Cut off discharge voltage

When the battery is discharged, the voltage drops to the lowest operating voltage value that the battery should not continue to discharge.

According to different battery types and discharge conditions, the requirements for battery capacity and lifespan are also different, so the specified termination voltage for battery discharge is also different.

Teach you how to use a multimeter to judge the quality of a rechargeable battery

3. Open circuit voltage (OCV)

When the battery is not discharged, the potential difference between the two poles of the battery is called the open circuit voltage.

The open circuit voltage of a battery varies depending on the material of the battery's positive and negative electrodes, as well as the electrolyte. If the materials of the battery's positive and negative electrodes are exactly the same, the open circuit voltage remains the same regardless of the size and geometric structure of the battery.

4. Depth of discharge (DOD)

The percentage of the capacity released by a battery during its use to its rated capacity is called the discharge depth.

The depth of discharge is closely related to the charging life of secondary batteries. The deeper the discharge depth of secondary batteries, the shorter their charging life. Therefore, deep discharge should be avoided as much as possible during use.

5. Overdischarge

If the battery exceeds the termination voltage value during discharge and continues to discharge, it may cause an increase in internal pressure of the battery, damage the reversibility of positive and negative active substances, and significantly reduce the capacity of the battery.

6. Overcharge

When charging a battery, if it continues to charge after reaching a fully charged state, it may cause an increase in internal pressure, deformation, and night leakage, resulting in a significant decrease in battery performance and damage.

Teach you how to use a multimeter to judge the quality of a rechargeable battery

7. Energy density

The average unit volume or mass of electricity released by a battery.

Generally, under the same volume, the energy density of lithium-ion batteries is 2.5 times that of nickel cadmium batteries and 1.8 times that of nickel hydrogen batteries. Therefore, when the battery capacity is equal, lithium-ion batteries will have a smaller volume and lighter weight than nickel cadmium and nickel hydrogen batteries.

8. Self discharge

Batteries, regardless of whether they are in use or not, can experience power loss due to various reasons.

If calculated on a monthly basis, the self discharge of lithium-ion batteries is about 1% -2%, and that of nickel hydrogen batteries is about 3% -5%.

9. Charging cycle life

After repeated charging and discharging, the capacity of rechargeable batteries gradually decreases to 60% -80% of their initial capacity.

10. Memory effect

During the charging and discharging process of the battery, many small bubbles will be generated on the battery electrode plate. Over time, these bubbles will reduce the area of the battery electrode plate and indirectly affect the battery capacity.

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