Lead acid sealed batteries are different from the flood in the main application of helium electrolyte and an airtight container. In this type should stop and consider it in more detail. Except for a slightly higher cost, sealed acid battery shortcomings of filling, which significantly expands the scope of its application. What is the marketing, and has the type described in some detail in [1]. From the viewpoint of the charge, this is the best in terms of ease of battery. First, the degree of charge clearly indicates the voltage at the battery 2, 43 -2.53 in cyclic regime of the charge, and secondly, even in excess charging voltage, no gases - helium recombination in the thicker layer and the tubes valves made of the catalytic rubber. However, significant currents of the charging batteries, the rate of emission of gas may exceed the rate of recombination, and work safety valve. Acid batteries can be recharged in a wide temperature range -20 - +50 oC. The maximum charging lead acid currents - up to 0, 35 bedtime.

Charging lead acid batteries can be from of any power source, ensuring that the condition - do not exceed the maximum charging current. Subject to termination charge - to achieve the threshold voltage off can be controlled by voltmeter or the beginning of "boiling", which can be determined by ear. In order to liberate man from the control of battery charging apply automatic chargers.

The best, but more complex is the so-called "fast" automatic charger. Here's power feed current and voltage stabilizers. Stabilized current issue the maximum allowable charge current, as the voltage increases to the AB decreases it, and upon reaching the threshold translates AB in its second phase - the charge constant voltage U = (2,26 - 2,31) * N of a voltage stabilizer. This is the scheme recommended by all firms charge the producers AB, with different variations. Such firm PANASONIC (Japan) recommends that a permanent stable current at all times of the charge, and the company Sonnen sheinn (Germany) for battery series A400 and A500 recommends a slightly higher threshold voltage. Of course this device is more difficult and more expensive than other.

There are numerous publications on charging acid batteries asymmetric current - alternating pulses of the charge and discharge. Ostensibly, this method of charge increases battery life, but the authors have no consensus on the size and shape of these pulses. Given that acid batteries are the cheapest, the use of expensive devices for the dubious extension of their service life is unlikely to be useful