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Maintenance-free battery, as the name suggests, the biggest feature is "maintenance-free". Compared with lead-acid batteries, its electrolyte consumption is very small, and there is basically no need to supplement distilled water during the service life. It also has the characteristics of shock resistance, high temperature resistance, small size, and small self-discharge. Of course, its price will be more expensive than lead-acid batteries. As for the service life, the recommended replacement period for maintenance-free batteries under normal conditions is about 3 years, which is equivalent to lead-acid batteries.
In order to avoid daily maintenance and maintenance, the design of the exhaust system is significantly different from that of lead-acid batteries, so theoretically, it is not necessary to add distilled water or electrolyte frequently. In addition, the housing of maintenance-free batteries is generally closed, and unless there are professional tools and techniques, the general owner cannot check and repair by himself.
Although the maintenance-free battery is called "maintenance-free", it is not completely left unattended. The manufacturer recommends checking the battery every 30,000 kilometers and performing maintenance every 80,000 kilometers. However, there are currently very few 4S shops or repair shops that can perform this operation, and the service life of the maintenance-free battery is relatively fixed. Under normal use, it should be replaced in 2-3 years, and there is nothing to extend it. The way of life.
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