Factory Direct: DKGB2 2V2000AH Sealed Gel Lead Acid Battery

1. Charging efficiency: The usage of imported low resistance raw materials and advanced process help make theinternal resistance smaller and the acceptance ability of small current charging stronger. 2. High and low temperature tolerance: Wide temperature range (lead-acid:-25-50 C ,and gel:-35-60 C), suitablefor indoor and outdoor use in varies environments. 3. Long cycle-life: The design life of lead acid and gel series reach to more than 15 and 18 years respectively, forthe arid is corrosion- resistant. and electrolvte is without risk of stratification by using multiple rare-earth alloy ofindependent intellectual property rights, nanoscale fumed silica imported from Germany as base materials, andelectrolyte of nanometer colloid all by independent research and development. 4. Environment-friendly: Cadmium (Cd), which is poisonous and not easy to recycle, does not exist. Acid leakageof gel electrolvte will not happen. The battery operates in safety and environmental protection. 5. Recovery performance: The adoption of special alloys and lead paste formulations make a low self-dischargerate, good deep discharge tolerance, and strong recover capability.

Model	Voltage	Capacity	Weight	Size
DKGB2-100	2v	100Ah	5.3kg	17171205*205mm
DKGB2-200	2v	200Ah	12.7kg	171110325*364mm
DKGB2-220	2v	220Ah	13.6kg	171110325*364mm
DKGB2-250	2v	250Ah	16.6kg	170150355*366mm
DKGB2-300	2v	300Ah	18.1kg	170150355*366mm
DKGB2-400	2v	400Ah	25.8kg	210171353*363mm
DKGB2-420	2v	420Ah	26.5kg	210171353*363mm
DKGB2-450	2v	450Ah	27.9kg	241172354*365mm
DKGB2-500	2v	500Ah	29.8kg	241172354*365mm
DKGB2-600	2v	600Ah	36.2kg	301175355*365mm
DKGB2-800	2v	800Ah	50.8kg	410175354*365mm
DKGB2-900	2v	900AH	55.6kg	474175351*365mm
DKGB2-1000	2v	1000Ah	59.4kg	474175351*365mm
DKGB2-1200	2v	1200Ah	59.5kg	474175351*365mm
DKGB2-1500	2v	1500Ah	96.8kg	400350348*382mm
DKGB2-1600	2v	1600Ah	101.6kg	400350348*382mm
DKGB2-2000	2v	2000Ah	120.8kg	490350345*382mm
DKGB2-2500	2v	2500Ah	147kg	710350345*382mm
DKGB2-3000	2v	3000Ah	185kg	710350345*382mm

Lead ingot raw materials

Polar plate process

Electrode welding

Assemble process

Sealing process

Filling process

Charging process

Storage and shipping

Why do photovoltaic off grid power stations need batteries? In the photovoltaic off grid system, the battery accounts for a large proportion, and its cost is similar to that of the solar module, but its life is much shorter than that of the module. The lead acid battery is only 3-5 years old, and the lithium battery is 8-10 years old, but the price is expensive. The BMS management system is also required to increase the cost. Can the photovoltaic off grid power station be directly used without batteries? The author believes that apart from some special applications such as photovoltaic lighting systems, off grid systems must be equipped with batteries. The task of the battery is to store energy, ensure the stability of the system power, and ensure the load power consumption at night or in rainy days. First, the time is inconsistent For photovoltaic off grid system, the input is a module for power generation, and the output is connected to the load. Photovoltaic power is generated during the day, and it can only be generated when there is sunshine. The highest power is usually generated at noon. However, at noon, the demand for electricity is not high. Many households use off grid power stations to use electricity at night. What should we do about electricity generated during the day? We should first store energy. This storage device is the battery. Wait until the peak power consumption, such as seven or eight o'clock at night, and then release the power. Second, the power is inconsistent Photovoltaic power generation is extremely unstable due to the influence of radiation. If there is a cloud, the power will be reduced immediately, and the load is not stable. For example, air conditioners and refrigerators, the starting power is large, and the running power is small at ordinary times. If photovoltaic power is directly loaded, the system will be unstable, and the voltage will be high and low. The battery is a power balancing device. When the photovoltaic power is greater than the load power, the controller sends the excess energy to the battery pack for storage. When the photovoltaic power cannot meet the load demand, the controller sends the electrical energy of the battery to the load. The photovoltaic pumping system is a special off grid power station, which uses solar energy to pump water. The pumping inverter is a special inverter, including the frequency converter function. The frequency can vary according to the intensity of solar energy. When the solar radiation is high, the output frequency is high, and the pumping capacity is large. When the solar radiation is low, the output frequency is low, and the pumping capacity is small. The photovoltaic pumping system needs to build a water tower, When the sun is shining, water is pumped into the water tower. Users can take water from the water tower when they need it. This water tower is actually used to replace the battery.