The room where the battery is being charged must not be entered with an open flame or a lit cigarette due to the resulting gases. Make sure there is adequate ventilation, as sparks generated when connecting or disconnecting wires can cause an explosion of detonable gas.
Plugs must be screwed in tightly. The minimum battery temperature is 10°C. And one more piece of advice: an accelerated charge harms the battery. When boosting a battery with a deep discharge (see also description of work step 3) either do not take up the charging current or are charged too quickly due to the so-called surface charge. The batteries seem to be in good condition, but this impression is deceptive. In view of this, accelerated charging can only be used in exceptional cases, for example, when starting the engine with a discharged battery.
If the battery is still in the vehicle, turn off the ignition before charging. Disconnect the ground wire first, then the positive wire.
1. Connect the positive cable of the charger to the positive pole of the battery, and the negative cable to the negative pole.
2. Set the charge current on the charger according to the battery capacity. The current should be approximately 10% of the battery capacity, i.e. for a 60 Ah battery. The current should be approximately 6 A. Turn on the charger.
3. In the case of deep discharge batteries with an open circuit voltage of less than 11.6V, the electrolyte is almost all water, and the proportion of sulfuric acid is greatly reduced. Because of this, completely discharged batteries in the cold can freeze and collapse. Deep discharge of the battery leads to sulfation of the plates, all surfaces of the plates harden.
The electrolyte at the same time becomes opaque, acquires a whitish color.
If a deep discharged battery is charged immediately after being discharged, the sulfation will disappear. If the battery is not being charged, the plates continue to harden and the battery's ability to take charge is reduced. As a result, battery performance deteriorates. Sulphated deep discharge batteries should be charged with a low current, so set the charging current to no more than 5% of the battery capacity. Thus, for a battery with a capacity of 60 Ah. the charging current should be 3A. The charging voltage should not exceed 14.4V.
4. Charge time should be 24 hours.
5. When connecting the battery, be sure to activate the radio, radio navigation system, clock in accordance with the instruction manual (coding) and power windows.
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