What Is a Deep Cycle Battery Charger?

Battery chargers generally use imported power modules, which are relatively new intelligent automatic chargers for electronic circuits. Low loss and high efficiency. It is suitable for 12V and 24V battery charging. The charger also has anti-reverse connection function. If it is not connected or the polarity is reversed, there is no voltage output. Only proper connection can work normally, and it also has overvoltage, overcurrent, overheating protection.

Battery charger

Battery chargers generally use imported power modules and are relatively new

The charging principle is that the voltage of the charger is higher than the voltage of the battery before it can be charged. The larger the difference in electromotive force between the two, the faster the charging, and the larger the charging current. Therefore, the general 24V charger has the highest voltage (no load). It is 28V, and 60A is the output current capability of full load. When you charge, the charger already has a load. At this time, the voltage is the voltage at which the battery is being charged. The 40A current is the charging current. This current will vary with The completion of charging is getting smaller and smaller. In addition, the size of the charging current is also related to the capacity of the battery.

Battery types and routine maintenance

Our commonly used batteries are mainly divided into three categories, namely ordinary batteries, dry-charge batteries and maintenance-free batteries. Ordinary batteries; the plates of ordinary batteries are composed of lead and lead oxides, and the electrolyte is an aqueous solution of sulfuric acid. Its main advantages are stable voltage and low price; its disadvantages are lower specific energy (ie, the electric energy stored per kilogram of battery), short service life, and frequent daily maintenance. Dry-charged battery: Its full name is dry-charged lead-acid battery. Its main feature is that the negative plate has a high power storage capacity. In a completely dry state, it can save the power obtained within two years. Just add electrolyte and wait for 20-30 minutes to use. Maintenance-free battery: Due to its structural advantages, the maintenance-free battery consumes very little electrolyte, and basically does not need to replenish distilled water during its service life. It also has the characteristics of shock resistance, high temperature resistance, small size and small self-discharge. The service life is generally twice that of ordinary batteries. There are also two types of maintenance-free batteries on the market: the first type requires no maintenance after use of the electrolyte at the time of purchase (adding supplementary liquid); the other is that the battery itself has already been filled with electrolyte and sealed , Users can not add replenishment at all. The correct use and maintenance of the battery mainly have the following 7 points: 1. Check whether the fixing bolts of the battery on the bracket are tightened. If the installation is not reliable, the casing will be damaged due to driving vibration. Also, do not place metal objects on the battery to prevent short circuits. 2. Always check whether the pole and terminal are connected reliably. To prevent the terminal post from oxidizing, you can apply a protective agent such as vaseline. 3. It is not possible to check the power of the battery by direct ignition (short circuit test), which will cause damage to the battery. 4, ordinary lead-acid batteries should pay attention to regularly add distilled water. Dry-charged batteries are best charged properly before use. As for the water-free maintenance-free battery, it is not impossible to maintain it properly. If necessary, replenishing distilled water can help to extend the service life. 5. The air holes on the battery cover should be unobstructed. When the battery is charged, a large number of bubbles will be generated. If the vent holes are blocked to prevent gas from escaping, the battery case will burst when the pressure increases to a certain level. 6. There will often be yellow-white paste around the battery poles and covers, which is caused by sulfuric acid corroding the root posts, line cards, and fixing frames. The resistance of these substances is very large, so they should be removed in time. 7. When two batteries are used in series, the capacity of the batteries should be equal. Otherwise it will affect the battery life

Several conditions affecting battery capacity and service life

There are many reasons for insufficient battery capacity, which are mainly divided into the following aspects: 1) The battery can be installed and used in a timely manner after reaching the user after leaving the factory, causing long-term storage. The temperature will have a great impact on the battery's self-discharge. Lack of capacity. 2) The positive plate is corroded and deformed to cause insufficient capacity. The positive plate of a lead-acid battery is the main factor affecting the operating life of the battery. The capacity of the battery during charge and discharge cycles, especially the decrease in capacity under deep circulation, is closely related to the quality deviation of the positive plate. a. The active material on the positive electrode grid softens and falls. Microscopically, there are large holes and trapped holes in the active material. The size of the large holes exceeds 0.5 cm. The core is formed into a coral-like structure, and small holes are used in multiple discharge cycles to increase the number of large holes. The main reason for these situations is due to high current charge and discharge. Avoid the occurrence of the current that should be charged and discharged and avoid overcharge or overdischarge. b. Positive electrode grid corrosion Deformation The grid corrosion rate depends on the composition of the grid alloy, but the higher the storage temperature, the faster the corrosion rate, the deeper the discharge depth, and the more severe the corrosion. 3) Sulfation of the negative electrode plate In normal work, the PbSO4 particles on the negative electrode plate are small, and the discharge can be easily restored to fleece lead, but sometimes, it is difficult to reduce lead sulfate inside the battery, which is called sulfation. There are many reasons for negative electrode salinization, such as the inability to charge in time after discharge, the battery being left for a long time, causing severe self-discharge, the electrolyte concentration is too high, the long-term charge is insufficient, and the long-term discharge at high temperature is difficult to reduce by conventional methods. In this way, the reduction of active materials is bound to affect the capacity of the battery.