Is a 13.5V Charge Enough for Proper Battery Maintenance with Jezpol Regulator?

Yesterday I bought a new battery, the condition for increasing the two-year warranty is proper charging and correct charging voltage. The seller and service technician with the device stated that it is 13.5 V. The measurement was made with the dipped beam headlamps on and slightly increased RPM +/- 2000 rpm. The minimum required is 13.8 V to 14.4 V. Today I replaced the RNc-12 regulator with a new one from:
Jezpol Bydgoszcz / 14.4 V, two cables, yellow and green, without a brush holder / and I went to the battery service and again there is no proper voltage. Tips, please, what could be the reason for this low charging voltage? Is there any charging at this voltage on the battery terminals? The charge lamp is off. Before that, I used the old one and the battery service technician said that the old battery was sulphated due to the low charging voltage. I recharged the old one from time to time, and it finally fell / could not turn the shaft several times, even after 10 hours of charging. The electrolyte was black, because the active mass flowed from the plates.
What to check in the alternator, please help and make specific suggestions, for which I thank you in advance. How long are the brushes in working order? Mentioned that the alternator has a symbol
A 124 - 55 N.

Or maybe you could write about the car.

RNc12 and A124-55N are Polonaise Caro GLE 1.6 / 1994 /. I measured the voltage during operation with a multi-pointer meter, the measurement showed 13 V. I thought that my meter is inaccurate and I went to the service again, they had 13.5V mentioned.
Tomorrow I will buy a new brush holder, the cost is low or at least it will eliminate another possible cause, my brushes are about 10 mm. The new ones are within 15-20 mm. If you have any suggestions I'd love to read them, maybe it will explain something.

Check the tension of the V-belt, the greater the charging current, the greater the resistance of the alternator. If the belt is loose, the alternator will not get its rotation and will slip. You won't notice it optically and audibly

Hello
To reach 14V on a battery, it must be fully charged. Charge it and then check the voltage on the car.

Today I replaced the brush holder with a brand new one, I measured the voltage on the battery terminals and it turned out that the voltage jumps once correctly, i.e. within the norm up to 14.5 V, after a strong addition of gas Up to 5-6 thousand. speed jumps significantly, even to 19V, then I turned on all possible receivers: emergency, heated window, dipped beam, blower in third gear and I measured again and it was correct again within 14 V. I do not know what to do next, I will try to unscrew the negative terminal from the side engine block, clean the contact area and lubricate it, check the tension at the + B terminal directly in the alternator. After replacing the brush holder, now the irregularities go the other way, the tension jumps from correct to too high, the 18-19 is unacceptable,
I also replaced the RNc-12 regulator with a new one, was it out of order? The RNC does not keep those provided at 14.4 volts
I am asking for further suggestions on what to measure and what to do next.

Either the regulator is damaged or there is no mass

Quote:

after strong addition of gas Up to 5-6 thousand. RPM jumps significantly, even up to 19V

my regulator to replace

perform voltage measurement on the altka (B + terminal and rear casing altka)
look for drops in the installation

Remove the alternator, disassemble it in two parts, remove the B + screw, clean the contact surface with the plus plate (steel-aluminum connection), twist it all properly.

Buddy Ennauto, you suspect there is corrosion of the so-called chemical at the junction of two metals and there is a weak current conduction through the point of contact and it gives symptoms that are too high and sometimes too low?
Maybe you had such a case at home? as soon as I clear this contact, I will let you know.

markus15021959 wrote:

Buddy Ennauto, you suspect there is corrosion of the so-called chemical at the junction of two metals and there is a weak current conduction through the point of contact and it gives symptoms that are too high and sometimes too low?
Maybe you had such a case at home? as soon as I clear this contact, I will let you know.

First, check if something changes after tightening the nut - the one under the wires on the B + terminal, if it improves, remove the alternator and do it carefully.

I took out the alternator and I did it very well. It turned out that the brush holder broke down, it jumped out of the tabs holding the plate soldered with the wire going through the spring to the brush. When the motor vibrated, the brush was shorted to ground, connected to the green wire going to the voltage regulator. I think that it was then that 18-19 V appeared, if the voltage was not correct + / _ 14 V. Maybe someone will answer me what could have happened to the battery during the operation of this voltage above the permissible max. 19 V.
Did the electrolyte boil and could the plates crash? I drove like this twice, maybe 15-20 km in total. From this newly bought handcrafted brush holder, I took new brushes and springs and a plastic housing. I soldered it all to the old contacts that are much more solidly made and in perfect condition despite 14 years of use. These new craft contacts are made of very thin sheet metal and the clamping lugs are bent too little and have popped out of the locks in the housing. Hence, my next problem appeared after their replacement. Now everything is ok and I have the correct charging voltage.

Hello, I had a problem and after checking everything, I propose to tighten the thick ground cable from the engine block to the body and directly fast 3mm from the alternator to the battery I had 12.99v and now I have 14.01v