solution
1, the use of intelligent charger, there will be an activation mode.
2, charging in parallel with a charged battery, charging can be.
Because the battery is over-discharged, the direct connection of the charger is generally not charged, because the charging machine thinks that the charging clip is not clamped on the battery pole.
Maintenance-free battery because of its normal charging voltage, the electrolyte only produces a small amount of gas, the plate has a strong anti-overcharging ability, and has small internal resistance, good starting performance at low temperature, longer service life than the conventional battery and so on, so during the entire use of no distilled water need to be added, in the charging system under normal circumstances, do not need to be removed from the supplementary charging.
The proportion of its electrolyte should be checked during maintenance. First wash the battery with water, then add the electrolyte (the market has bought), and then charge for about 16 hours, and then use 5 cm long electric furnace wire to discharge the battery positive and negative, about 4 hours, so that 4 cycles, to ensure that your battery recovery capacity of more than 50%, but the prerequisite is that the plate is not broken.
Extended information:
Also known as Rechargeablebattery (rechargeable battery), the reason why it can be charged is because its chemical action can reverse after connecting to an external power source.
There are many kinds of chemicals used to make batteries, and their designs vary. Therefore, its voltage, capacity, appearance size, weight are also different.
1) If the battery has been used for more than 1 year and fails to be charged, a new battery should be replaced. 2) If the temperature of the battery shell is too high, the high rate discharge meter can be used to detect the voltage value of the battery and each cell battery. If the measured voltage of a single cell battery is lower than 1.5V, it indicates that there is a short circuit fault inside the single cell, which should be disassembled and repaired; If the electrolyte is very cloudy, most of the active substances on the plate have fallen off, basically lost the ability to work, and the battery should be replaced.
Your case is caused by the severe \"vulcanization\" of the battery. It's a very bad situation. In theory, it is irreversible, and can only \"die as a living horse doctor\". Teaching you a \"native method\" might help. First check the battery is not lack of electrolyte, if the electrolyte is dry, add distilled water first, after adding enough, do not put the battery's liquid on the cap and then proceed to the next step. \"Activation\" - find a 220V\/200W ordinary incandescent lamp and battery connected in series (without tube of positive and negative polarity) connected to the 220V AC power supply at home to see if the lamp can emit normal light, if it can emit normal light, continue to power for about 1 minute and then disconnect the power supply, wait a few minutes and then switch on for a minute. After repeated 3 to 5 times, the battery is connected to the charger for normal charging for 15 hours (99999999999 pay attention to the positive and negative polarity do not make a mistake). If the light bulb does not glow after the power is turned on, wait a few minutes and then connect to the AC power supply to try until the light bulb can glow normally and then connect to the charger for charging. I hope my answer saves your battery.