First, the battery for starting the ship
1. Marine battery weekly inspection: surface, joint, voltage, current, insulation, temperature surface cleaning joints are not loose, no corrosion, bare parts are coated with Vaseline float charging voltage: 12.4V for 12V, 26.8V for 24V Charging current: 1% of single cell capacity. Charging screen insulation meter indication > 3 megohms.
2. For non-maintenance marine batteries, check whether the battery voltage and electrolyte specific gravity meet the requirements (refer to the hydrometer). Pay attention to check the height of the electrolyte and the presence or absence of sediment, and add distilled water in time (do not add dilute sulfuric acid at will). When applying for a battery, try to apply for maintenance-free type. Maintenance-free does not require checking the electrolyte, but other maintenance is still needed.
3, the battery should avoid long-term charging and over-discharge, etc., to prevent the plate from vulcanization (ie aging) leading to battery damage or performance degradation (refer to the voltage is fast enough, and quickly drop after disconnection).
4, the battery often without load, should be charged and discharged once a month (generally only put 50% of the capacity and immediately charge), can be discharged through the load after disconnection, or directly discharge the bulb.
5, do not mix old and new batteries, parallel battery replacement must be replaced at the same time, using the same size of the battery.
6, good or bad judgment: 24V series two battery voltage should be the same, the difference is more than 0.5V, indicating that one of the problems occurred; in the case of sufficient power, the generator or lifeboat should start very smoothly, smooth is "噜 噜 ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” ” If the voltage difference between the battery terminal voltage and the starting motor terminal voltage exceeds 1~2v, the wiring connection is not good, or the switch is not good.