Advice 1: How to charge a completely discharged battery

If a completely discharged automotive battery, determine its capacity, connect it to a charger and charge a small current, which is calculated depending on capacity. To charge a fully discharged battery of a mobile phone or player more complicated - it will require a few options.
How to charge a completely discharged battery
You will need
  • charger, power supply.
Charging a car batteryif battery of car is completely dead, don't try immediately to start it, "potkuri" from the charger or the batteryand the other car. Not to spoil the battery, immediately remove it, enter the room and try to charge. When charging of the supply current is not more than 10% of the capacity of the battery. For example, if the battery has a capacity of 55 ampere-hours, serve on him a current of 5.5 amps and charge it for 10 hours. When charging, remove the cover batteryand and ensure he is not overheated and is boiling. In this case, the battery can permanently malfunction.
If the battery is sealed and requires no maintenance, so the charging set is even more weak current is 2.5% of the capacity of the battery. For a 55 ampere-hour batteryand this current will be 1,375 a, And the charging time will be 40 hours. If possible, use the charger with the regime "falling exercise" that reduces the current as charging the batteryand not allowing it to overheat.
Some chargers have a quick charge function. It can be used only as a last resort, as it significantly reduces the life of the battery.
Charging batteryand mobile phone or pluralities batterys used in these devices, when the power is blocked by the special controllers, therefore it is considered that charge. But worth a try. First of all, put the device on charge for a few hours. If does not help – remove the battery and give him the voltage from the power supply, but not above 4.2 volts. In an hour set back. If the charge has not appeared – way controller battery and apply AC power, beating him. The battery will start charging, but it may explode, so be very careful.

Advice 2 : How to charge a completely discharged battery

Lowering the temperature of the ambient air or improper operation of vehicle can affect the charge of the battery of the car. But completely dead "car battery to charge correctly.
How to charge a completely discharged battery
After removing the terminals and retrieve the battery from the car, wipe it with a damp cloth, clearing away the acid salts. Charging a car battery produce in a room with good ventilation. This will help avoid poisoning by toxic vapors.
Unscrew the caps and clean the exhaust valve. This will help to protect the battery from bursting open in case it is boiling. Connect the positive and negative terminals of the charger to the same battery terminals. Incorrect polarity may cause the battery to full unfitness.
Charging the battery produce with a fixed amount of current, which should be about one-tenth of its nominal capacity. So, for example, charging a battery with a capacity of 60 Ah, set the amperage charger 6A. To ensure control over the maintenance of the current should follow the indications of the ammeter available on the device and, if necessary, to modify it. When charging the battery with high degree of wear, the charging current should be lower.
When the terminal voltage of the battery will reach 14 In, decrease two times the charge current. With this voltage, continue charging until the beginning of the gassing. During charging, battery maintenance, it is recommended to re-cut two of the current strength and continue the process.
The battery is considered fully charged if its charge remains unchanged for one to two hours. In the not accepted types of devices, this charge level is achieved at a voltage of about 16.3 to 16.4 V. the figure can be different and depends on the alloy plates of the battery and the purity of the electrolyte.
Do not charge the battery after the start of active gassing with plates (boiling), as this will not give a positive effect and leads to decomposition of the electrolyte.

Advice 3 : How to start a car without battery

The battery has a time resource that is gradually consumed, and its capacity becomes insufficient for the job. Once he can discharge from extended use. In the winter these problems are amplified. As a result, drivers are faced with the problem of factory car without a battery.
How to start a car without battery
Modern cars are equipped with computers and injectors. For them, the best way to plant will be energizing to your machine from the battery to the other. For this there are special wire-clamp terminals. They are sold at any auto shop and very affordable. It's worth to buy them and store in the car, even if you have a new and stable car. You might help someone on the road, giving a jump start.
To make one car from another, put them together, but so that housing is not in contact. You must include a neutral speed and the Parking brake on each car. Secure the wire to the positive terminal outside the battery, then the other end attach to the "plus" worker. For simplicity, the "plus" terminals may be marked in red and minus are black. Then secure the cable on the "minus" infected battery, and then the corresponding terminal outside. Start the working car and leave it to work for 10-15 minutes. After that, not for instance operating a car, try to get one with the low battery.
If the car in whatever was necessary to make, and the wires no one, then you can resort to a permutation of the battery. Remove the batteries from the cars. Put a working battery in a car that failed to start. Do not attach it on the case and do not advance fixing of terminals. Start the car. Not suppresses the engine, carefully disconnect the working battery and place outside. Well secure it and the terminals. We perform these manipulations only if you have confidence in their knowledge and skills.
If the electronics of the machine allows, you can try to start it while driving. It is necessary to bring the vehicle in motion: request that you hauled on the rope, slide down by inertia from the sloping surface or ask help to your car pushed. When the machine is set in motion, turn the ignition switch to work mode and turn on the speed (better to limit first or second). This method is extremely harmful for machines with injected fuel and is conditionally prohibited.

Advice 4 : What to do if the vehicle battery is completely dead?

In the car, every detail has its importance and plays a specific role. And whatever is said, it is not the main mechanisms and secondary. With the discharged battery, for example, transport in General, will not submit signs of life."
The average time of full charging of the battery is 15 hours


The battery is primarily required to operate the vehicle's starter motor and, accordingly, the engine start-up. In addition, it is designed to provide electrical energy for various automotive customers at the idle motor. In turn when the engine is running the alternator charges the battery.

The reasons for the discharge

Everything seems to banal is simple, but many factors contribute to the discharging of the battery and on some of them, many motorists simply do not pay enough attention. But even if the motor is idling, long enabled consumers energy and adversely affect its charge. In this case, this can be attributed to auto connect to other consumers not covered by the standard package and the circuit in the mains.

The quality of the battery is also affected by the faulty electrical equipment, which decreases the charging voltage from the generator, long-term Parking is connected with the negative terminal (ten days).

Types of batteries

If the battery is low order "reanimation" of action will be slightly different depending on which type is installed on the car. Batteries are divided into serviceable, low-maintenance and maintenance-free. The first option is extremely rare, so we will not focus on it. Low maintenance, batteries require periodic topping up of distilled water, and maintenance-free designed so that water flow in them is reduced to a minimum and they don't have special holes for such an operation.

Check the voltage at the terminals of the battery

The only thing that allowed the original to do with any type of battery is to test the voltage loading plug, a multimeter or voltmeter. The voltage at the terminals of the battery with a full charge should be 12,6-12,9 V. Smaller figures indicate the discharge.

Check electrolyte level and density

In the presence of maloorlivka battery car owner should check the electrolyte level, density and if necessary add distilled water.

What is an electrolyte? It is a mixture of sulfuric acid and distilled water. The process of water evaporation cannot be prevented, and this happens most intensely in the hot summer weather. On some types of batteries have labels for the minimum and maximum, but if there are no reference points, you should check that the electrolyte completely covers the plates of the battery. In addition, it reduced the density often indicates the discharging of the battery.

To check the density of electrolyte must be such a simple tool like a hydrometer. It is a glass flask with pear and float. Density is checked in all banks of batteries, then make the appropriate conclusions. Normal readings should be from 1.25 to 1.29 g/cm3. To increase the density of the electrolyte is added only distilled water.

Some batteries have special charging indicator, it gives readings just on the basis of the density of the electrolyte, which simplifies the task. If it's green then charging is not required, black – low battery, white – unloaded or inoperable.

Charging the battery

The results of all the performed operations, it is possible to proceed to the immediate charging of the battery. This will require a special charger. As a rule, it is not difficult to use and completely automatic. Only not to forget to take a number of measures to correct the charging. Namely, to remove the terminals and to open the neck.

The first connects the plus terminal of the charger, then the negative. And only after that the device included in the network. When charging is complete, disconnect in the reverse order.

Remember that when charging the battery stands out a combustible mixture of oxygen and hydrogen, so in any case it is impossible to place the battery near sources of fire. The room must be well ventilated.

With maintenance-free batteries, the situation is somewhat different. They are technologically different from the slightly-maintenanced not only those that do not have fillers, but also the internal device. Some, like low-functioning due to liquid electrolyte, in some it is contained in non-woven polypropylene, and in the other it is mixed with powder of silicon oxide and is a gel.

Charge maintenance-free batteries should be with great care, strictly following the instructions. If possible, the charger current can be set in the range of 10 % of the capacity in Ah. At full battery power is better to use only 1.5-2 A, since a rapid release of gases is fraught with serious consequences.
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