Why boil battery by car? List of causing action

The fight against the boiling battery is the case habitual for many motorists. Why boat battery on the car, not everyone knows. Newbies sometimes do not even suspect that such a phenomenon is possible. Meanwhile, boiling batteries in perspective can have a number of unpleasant consequences.

First, it is not necessary to wait for normal work from it: boiling hour can be equated by 3 days of continuous operation, with rest only at night. Secondly, the flowing electrolyte creates a permanent humidity under the hood - which means that the mass corrosion is not far off. Thirdly, the battery filler fluid falls on everything that is on the way. And it is essentially an acid - a very aggressive chemical compound.

The first paint coating suffers from him; If the measures are not accepted, the caustic composition is accepted directly behind the body. For a careless and inattentive driver, an investigation becomes rust in board, requiring welding work. The case is rare - nevertheless, in the main mass, the people are careful in relation to the car - but very possible.

Why boils battery on the carcan only be explained by 2 reasons: a relear of the battery or a short circuit in some part of it.

Battery reload

If the voltage in the battery exceeds the calculated, the water in the electrolyte begins to decompose on its components - hydrogen and oxygen. Both substances are gases that come to the surface with bubbles - this is the so-called boiling. Check suspicion of the recapture is quite simple, only the tester is needed. It connects to battery terminals; Expansions are removed from the device - first at idle, then when passing up to 2500 rpm according to the tachometer.

Normal is the range between 12.8 and 13.4 V, permissible - voltage up to 14.3 V. If the maximum is exceeded, we are dealing with a relear. In 99% of cases, the voltage relay is guilty, but another unaccounted percentage remains, so it is advisable to check the relay. To do this, we do as follows.

• A low-power light bulb is connected to the knobs of the regulator;
• It is connected to his conclusions plus from the battery;
• The minus of the battery is thrown to the corresponding pole of the regulator. Light bulb should light up; If this did not happen - check the brushes and wires: somewhere in the scheme there is a break.

The same scheme is complemented by finger batteries connected sequentially. The light should be flush, since the consumption voltage increases above the planned norm. If the light does not disappear, then we have a distinguished relay.

Note that on a number of models there is an electromechanical option. In this case, the relay failure is not required: maybe it is simply not adjusted. Arming manual and adjust. If the regulator is purely electronic, only its replacement saves the situation.

Short circuit: When the normal voltage is detected, which is combined with a boiling battery, we conclude that the battery itself has closed. It consists of 6 cans; If one rigged, in the remaining voltage exceeds the norm, they can not cope with it, and the battery boils. An indirect sign of closure can be considered overheating its housing. The damage bank is determined by comparing the electrolyte level. In most cases, such a battery is only on the emission. Otherwise, this reason why boums the battery on the car, not eliminate.