The AGM battery uses pure sulfuric acid aqueous solution as the electrolyte, and its density is 1.29-1.3lg/cm3. Most of it exists in the glass fiber membrane, while a part of the electrolyte is absorbed inside the plate. In order to provide a channel for the oxygen precipitated from the positive electrode to the negative electrode, it is necessary to keep 10% of the pores of the diaphragm not occupied by the electrolyte, that is, the lean liquid design. The pole group adopts a tight assembly method so that the plates can fully contact the electrolyte. At the same time, in order to ensure that the battery has sufficient life, the plate should be designed to be thicker, and the positive grid alloy is Pb’-q2w-Srr--A1 quaternary alloy. The AGM type sealed lead-acid battery has less electrolyte, the thickness of the plate is thicker, and the utilization rate of active material is lower than that of the open type battery, so the discharge capacity of the battery is about 10% lower than that of the open type battery. Compared with today's gel-sealed batteries, the discharge capacity is smaller.

High-performance power advanced AGM batteries should have the following characteristics:

Performance characteristics of advanced AGM batteries

AGM lead-acid batteries are electrolyte-poor batteries, so the electrolyte is absorbed in the AGM separator and there is no electrolyte flowing inside the battery. Because AGM adopts advanced AGM battery materials and design technology, it loses less water during use and does not add water. At the same time, high-performance AGM batteries also have the following advantages:

* Low self-discharge, can still be used after long-term storage (3 months)

* High starting power at low temperature, suitable for frequent starting

* Has better charge acceptance

* No acid mist discharge when charging

* Long service life (3 to 5 years)

*Safe explosion-proof

* less water loss

Structural features:

When the ordinary battery is close to the completion of charging, due to the decomposition of water, a large amount of water is precipitated, causing the liquid level of the electrolyte to drop. If the charging current is too high, more water will be lost. Due to the use of lead-calcium alloy grids, AGM separators, and innovative design of the adsorption glass felt battery, there is a gas recombination reaction during battery charging and use, which reduces the water loss of the battery.

Another reason why the water-absorbing glass mat battery does not need to add water during use is that it adopts a sealed valve control design, which greatly reduces the evaporation and leakage of water. At the same time, the use of AGM separators and the use of "tight packing" can protect the active material of the positive plate. It can effectively prevent the active material from softening and falling off, and prolong the service life of the battery. Since the maintenance-free lead-acid battery adopts a sealed design, it will not corrode the pole and the car body. The battery vent is designed with a new safety ventilation system. The air filter in the airway plug can prevent the discharge of acid mist and external sparks from entering the battery and preventing the battery from bursting.

Features:

Low self-discharge and long service life. AGM lead-acid batteries can generally be used for 3 to 5 years. Common battery grids are lead-antimony alloys. During the charge-discharge cycle, antimony is transferred from the grid to the active material and electrolyte of the positive and negative electrodes, thereby increasing the self-discharge of the battery and shortening the service life of the battery. The absorption glass mat battery adopts lead-calcium alloy, which does not contain antimony, so it can minimize self-discharge and prolong the service life of the battery. Absorbent glass mat batteries with high cranking power. Compared with ordinary flooded batteries, due to the use of new materials and new design methods, it has small internal resistance, high output voltage, large starting current at low temperature, and long service life.

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