# Advice 1: How to check density of the battery

There are many different factors that prevent the factory car engine. One of them is the battery. But not all know about charging the battery can be judged by the density of the electrolyte. How do you determine this density?
You will need
• Kislotami, hydrometer,battery tester.
Instruction
1
Measurement of density of electrolyte of the battery must only be produced if since his charge was not less than 6 hours. First you need to Unscrew all of the plugs of the battery cells.
2
Take a measuring device, which is called cyclotomic and drop it vertically holding in the battery cell. The device is a glass bulb within which is a float – hydrometer with scale graduations, and at the end of the device has a rubber "pear", serving for the selection of the electrolyte. With its help, dial the desired amount of acid, which allows the hydrometer to float freely. Look at the scale of the instrument, take readings. The electrolyte with high density float will float above. The unit of density is kilogram per cubic decimeter, liter.
3
Compare our readings with the data from the table, previously calculated by experts. If the battery is operated in areas with normal climate conditions, its density should be not less than 1.24 kg per liter. The difference of measurements in the other battery cells is not more than 0.03 kilograms per liter. At low density, you must charge the battery.
4
Upon receipt of a satisfactory testimony to tighten the plugs. You need to use native for your battery plugs that should have a gasket.
5
If the readings have not reached nominal values, replaceable battery.

After checking the density of the electrolyte battery test load on the test device. His testimony indicates the battery status.
Before the density measurement of the battery it is desirable to measure the electrolyte level.

# Advice 2: How to increase the density of the electrolyte

The decrease in the density of the electrolyte occurs mainly when the battery is dead. This increases the internal resistance of the battery and decreases its capacity, which leads to difficulties when trying to start the engine due to the lower power starter. Consider how you can increase the density of the electrolyte.
You will need
• battery
Instruction
1
Open the tube at the top of the battery and using a special instrument, a hydrometer, measure the density of the electrolyte. To do this, in a glass tube, inside of which is a float, enter the electrolyte and dividing the float determine its density. If the density is less than 1.12, then restore it is unlikely to succeed.
2
Charge the battery fully until it boils the electrolyte in the banks. The density value should rise to 1.26-1.28. It is advisable to perform a few full cycles of discharge and charge, this charge the battery with low current, then discharge to 10.8 volts, connecting the resistance of 50 Ohms or a light bulb is 20-30 Watts.
3
Then, multiply the current by the time during which the discharged battery - so you calculate the value of the real capacity. Repeat the whole cycle again. After these manipulations, the capacity and density needs to increase. Again, measure the density with a hydrometer.
4
If after all listed actions the electrolyte density is less than 1.26, then adjust it by adding electrolyte with a density of 1.40. To do this, use a blower to remove a portion of electrolyte from the battery, but instead add a new electrolyte with high density, while the density of the resulting composition will not reach the required value.
5
Then again charge the battery a small current, not more than 2 Amps for half an hour in order to give to mix the electrolyte. Again check the tightness and if it is less than normal, then add the electrolyte.
Note
It is not recommended to completely drain the electrolyte from the battery, as in this case, you can close the plates with debris, which breaks off from them and settles on the bottom of the jar.

# Advice 3: How to raise the electrolyte density

The density of the electrolyte decreases when the battery is discharged, where he poured. To raise density, try charging the battery to a boil in banks. If the density of the electrolyte is not up to the desired rate, release the place and dilute sulfuric acid.
You will need
• hydrometer, sulfuric acid or a concentrated electrolyte, the charger.
Instruction
1
Raising the density of the electrolyte without topping up kislotoupornymi a symptom of the fall of the density of the electrolyte is discharging. To determine the density use the hydrometer. To do this with it, pull a certain amount of the electrolyte and on the pop-up floats, determine its density. It should be of 1.27 g/cm3, in the winter it may be a bit higher. If the density of the electrolyte is less than normal, connect the battery to the charger and charge it until until the electrolyte in the banks do not boil. Then drain it using the bulb, during this time, measure the discharge current and its time. Multiplying these values, find out the capacity of the battery and compare it with the passport. If it is more than 30% less, then reloading will not help. Otherwise, charge the battery pack again and measure the density of the electrolyte. It should be OK.
2
Raising the density of electrolyte by adding kisloty if the first method didn't help, and the density of the electrolyte is less than 1,27 g/cm3 dilute acid. To do this, a hydrometer, pull a certain amount of the electrolyte and pour the sulfuric acid. Note that it has a density of 1.83 g/cm3, and it is very corrosive. Car shops for sale the concentrate of the electrolyte density of 1.4 g/cm3, it is more secure, so better use it. Add the concentrate, while the density does not increase to the desired value. After that, check the battery charging with a small current (not more than 2 (A) for half an hour. During this time the electrolyte is fully mixed. Again check the density in all banks. It should be the same and conform to the standards. If the density is still low, repeat the operation again.
3
Observe special caution when working with sulfuric acid. Avoid its contact with skin or clothing. If this occurs, wash out electrolyte with plenty of water and treat the place with a solution of soda, which neutralizes acid. When pulling the solution in any case, do not invert the battery, because the slime from the plates can short-circuit the battery, and it will deteriorate.

# Advice 4: How to increase the density of the electrolyte

If the car starter barely turns, it is necessary to check the density of electrolyte in the battery. For this rather special hydrometer. If the density of the electrolyte is insufficient, it is necessary to take a number of measures for the resuscitation of the battery is to recharge it and increase the density of the electrolyte.
You will need
• the autotester or multimeter, battery charger, fresh electrolyte
Instruction
1
Recharge and reinstall the battery. Across the terminals of battery connect the autotester, is included in the voltmeter. The shape arrow should be in the yellow zone. The multimeter should show a voltage of 11.9 to 12.5 volts.
2
Start the engine, print it revs to about 2.5 thousand. min. Measure the voltage at the battery terminals. When checking the shape using a voltmeter, the arrow should be in the green sector. The multimeter should show a voltage of 13.9 to 14.4 Volts. If the voltage is not changed, hence, there is no charging current and the car is in need of repair, and the battery is charging. Charge the battery with current (in Amperes) 10 times less battery capacity (Ampere*hour) for 10 hours. The next 2 hours charging produce current (in Amperes), smaller than the battery capacity (Ampere*hour) 20 times. For example, when the battery capacity is 60 amp*hours in the first charge current equal to 6 amperes, the second is 3 amps. (The second mode is the equalization is used to equalize the density of electrolyte in all banks of batteries).
Charge the battery until the start of intensive gas release in all banks.
3
If testing on the vehicle with the engine running the voltage at the terminals of the battery is raised above 14.4 V volts, then the relay controller of the car is faulty and in need of repair, and the electrolyte in the battery is constantly much boiled away. So in such cases, the electrolyte literally spills and add to the batteries to equalize the level of the electrolyte only distilled water, nothing surprising in the low density of the electrolyte no. In this case, fully charge the battery and align the density of the electrolyte in the banks, collecting old and weak electrolyte and adding fresh. Do this operation only on a fully charged battery, check the voltage at the terminals, which is switched off and disconnected the charger should be 12.7 Volts.

# Advice 5: How to check the charge of the car battery

Many motorists, especially with little experience, are faced with the problem starting car after long Parking, and also with the onset of the first frost. In most cases, after several unsuccessful attempts to start the engine of the machine begins the search for the cause, which often lies in the lack of proper control over the condition of your battery. If the vehicle is not used for a long time, or exploited it in the winter, and even in urban areas, when you have to stand in long traffic jams-enabled devices, the probability of a dead battery high.
Instruction
1
Disconnect the battery from the onboard network of the car and measure the voltage on the battery with a voltmeter. It is advisable to do it immediately, but a few hours after engine stop and in a warm room, otherwise you'll have to make a correction for the temperature of the electrolyte. The degree of charge of the battery can be determined from the tables in reference books. If these data are not at hand, we focus on approximate numbers is 12.2 volts means 50% of the discharge; 11,6 volts – 100% charge.
2
Measure the electrolyte density with a hydrometer (densimeter), if you have a serviceable battery. Have a fully charged device parameters must be 1.28 -1.29 GSM?, in the summer, 1.26-1.27 DBS?, at discharge 50% -1.20 GSM?, have fully discharged - 1.10. Owners of modern maintenance-free batteries are exempt from this procedure.
3
Undercharge the battery with the charger. If the voltage is less than 12.6 V and the density of electrolyte is below 1.24 fuel. cube, after bringing to normal the level and density of electrolyte.
4
Check the voltage on the battery with the engine running at 1500-2000 rpm obmin and turned on the high beam headlights. A voltage of 13.9 volts to 14.3 volts suggests that the charging system is working optimally, and the deviations in the or down allow to conclude that insufficient charge or overcharge. And then, and more harmful to the battery and reduces its life. The undercharge may be due to the weak tension of the alternator belt.
5
Take it a rule to recharge the battery after a long pause in the use of the car (in the summer more than 3 weeks in the winter more than 10 days). Remember that an activated alarm also leads to a gradual battery drain.
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