Working Principle and daily maintenance requirements of battery charging, solar battery charging process Specification 1. Before charging, check whether the battery is in good condition, circuit is in good condition, and open the air cover. Do not open or remove the plug of the battery; do not add liquid before or during charging; do not smoke, fire or open fire around the battery; do not discharge the battery during charging; do not use the metal tools on the battery during charging; Do not repair the battery while charging; when the electrolyte temperature of the new battery is below 55 ° c, the electrolyte with a specific gravity of 1.26 ° C is cooled to 30 ° C and injected into the battery. The injection site should be 10-20 mm above the protective plate. Before recharging, the battery should be maintained for six hours until the liquid temperature drops below 35 degrees Celsius. When the specific gravity of the electrolyte is 30 ° c, the following formula should be adopted: D30 ° C = dt + 0.007(t-30 ° C)3. The temperature of electrolyte should not exceed 55 °C during charging, otherwise, the charging current should be reduced, the artificial cooling or the charging should be stopped. Figure 4. When the battery is fully charged, the voltage and specific gravity of the electrolyte will not increase within 2-3 hours, and there will be many bubbles. The specific gravity of the electrolyte is 1.26, when the cell voltage drops to 1.7v, the specific gravity of the electrolyte is 2.4v, the voltmeter voltage is 41V (operating load) , the specific gravity of the electrolyte drops to 1.18 should be charged in time.After the battery is charged, the specific gravity of the electrolyte is adjusted to 1.26 by distilled water or dilute sulfuric acid with a specific gravity of 1.4 and sufficient height is maintained. The specific gravity of the electrolyte should be recorded at the beginning and end of battery charging. These records will assist in battery maintenance and assurance analysis. Keep the battery away from fire and heat. Cover with gas cap after charging, wipe off the spilled electrolyte, keep the joint clean and dry, and apply vaseline. Battery flushing must be carried out outside the vehicle. Figure 8. The battery charging environment must be well ventilated. In particular, the car is charged in a forced draft. Ventilation is good, the temperature should not be higher than 40 °c, the gas flow can be calculated to avoid the explosion caused by the accumulation of hydrogen and oxygen mixture during the charge of the battery, the following formula can be used: Q = 0.05 × I × N (where Q: Air Activity, I: charging current at the end of charging, N: Number of rechargeable batteries) . The air activity of the charge chamber shall be greater than the value in the calculation formula. Figure 9. The initial and normal charge data for the battery can be found in the table below. IIIII current (a) time (a) current (a) time (a) current (h) time (a) current (h) time (a) current (h) time (a) current (h) time (a) current (h) time (h) time (H) time (h) time (h) time (H) time (h) time (H)4535-452635-50624-6316-10 stage I charging time can be controlled according to charging characteristics, when the battery voltage rises above 2.4 v, it can be recharged in the second stage. Note: Can Be equipped with automatic charger, charging process will automatically charge the battery, will not occur over-charge and over-charge phenomenon.