The battery is constantly running out on the VAZ 2112

There was such a problem with my VAZ 2112, the battery is constantly discharged. I charge from the charger for days, but still after a week, two sits down and the car does not start. And the on-board computer constantly shows 12,6 volts - battery charging. As far as I know, charging should be at least 13,6 volts, then the battery will not sit down. I was looking for a reason for a long time, until one day the reason found itself, the diode bridge on the generator burned out. And of course, the charge immediately disappeared completely. I bought a diode bridge, the issue price is 200 rubles, I don’t remember.

I put a new diode bridge, assembled the generator and put everything in place. And then a new battery turned up for me, but not the usual 50 or 55 as they put on a Zhiguli, but a 70th from some kind of agricultural tractor. So with such a battery, you can start at least with all the devices turned on, high beam, stove, fog lights, rear glass heating, radio tape recorder ... And it starts, even the radio tape recorder does not go out.

But one problem still appeared with this super powerful battery, the diode bridges are constantly on, I change at least once every half a year. But while it is not particularly annoying, 200 rubles is not very much for half a year, the battery will certainly cost more.