Advice 1: How to raise the density in the battery

It so happens that the day idle, car not to start, not spinning the starter. The battery is discharged per day, despite the fact that it charge from the mains for a long time. The diagnosis is simple - dropped the density of the electrolyte in the battery. During prolonged overcharging the electrolyte boils and evaporates, its volume decreases. On the advice of the manufacturers top up the battery with distilled water, but few who are thus measures the density. And since not one boils water and also electrolyte, its density decreases. It's time to increase the density.
How to raise the density in the battery
You will need
  • Hydrometer, pear-enema, measuring Cup, electrolyte, battery acid, distilled water, a solution of baking soda, a drill, soldering iron.
The first thing you should start is to measure the electrolyte density in each battery Bank separately. Density should be in the limit from 1.25 to 1.29 – the smaller figure for the southern regions with mild winters, and more – for Northern regions with cool summers, and the range of readings on the banks should not be 0,01. If the measurement of density showed that its value is in the limit of 1,18-1,20, then it can be done by topping up the electrolyte with a density of 1.27. First bring the density to the desired one Bank. Vent the electrolyte with the help of "pear", pump out the maximum amount, measure the volume, add fresh electrolyte in the half of the volume is drained. Rock the battery from side to side and measure the density. If the density has not reached the desired value, refill the filling solution in chetverti volume from bulging. Further Dalilah the volume cut in half, to achieve the desired density. And in achieving the desired density of the residue add distilled water.
Determining the optimal density of the battery
If the density fell below the threshold of 1.18, the electrolyte will not help here, need battery acid. Its density is much higher, because the electrolyte is prepared from it by mixing with distilled water. Your work hours are spent in the same manner as the addition of an electrolyte, but in this case the procedure may need to be repeated, if after the first stage diluting the density reaches the right target.
Density checker
Another method involves the complete replacement of the electrolyte in the battery. You need to pump out the maximum amount of electrolyte with the help of "pear", to seal the ventilation openings of the tubes of cells of the battery, put the battery on the side and bottom of the battery, drill a 3-3. 5, drill holes, alternately in each Bank, not forgetting to drain the electrolyte. Then rinse the battery inside with distilled water. Drilled holes zapevaet acid-resistant plastic, better tube from another battery. And pour fresh electrolyte, it is better to prepare it yourself with a density of little more than put for your climate zone.
Sealing of drilled holes
When working with electrolyte and especially with acid be careful, work in rubber gloves and glasses.

Dilution of the electrolyte by yourself remember: you need to add acid to water, not Vice versa, this is due to the different densities of acids and water.
The battery should not be turn to the top bottom, this can lead to shedding of the active mass of the plates and subsequent short circuit.
With the complete replacement of the electrolyte do not expect a long life of the battery, prepare to buy a new one.
Useful advice
The density of the battery it is necessary to measure at 20 degrees Celsius.

In advance, prepare the container under drain the electrolyte and for breeding fresh.
When charging the battery electrolyte density increases.

When the sealing of the bore holes, check the resistance of plastics by reaction with the electrolyte.

Advice 2 : 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.
How to raise the electrolyte density
You will need
  • hydrometer, sulfuric acid or a concentrated electrolyte, the charger.
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.
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.
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 3 : 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.
How to increase the density of the electrolyte
You will need
  • battery
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.
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.
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.
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.
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.
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.
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