Lidl ULG 3.8 B1 Rectifier Operation: EXIDE HD 72Ah 570A Battery Charging in Snowflake Mode

With reference to a closed topic: elektroda.pl/rtvforum/topic3282390 on the operation of the charger from the Lidl store. Model ULG 3.8 B1 .
When connected to the EXIDE HD 72 Ah 570 A battery for preventive charging in snowflake mode behaves as follows:
1. Charging with high current to reach a voltage above 14 V - I could not capture the exact value.
2. The charger then waits for the voltage to drop to 12.8 V
3. Charges again probably with 0.8 A current to 14.7 V
4. It stops charging and "watches" 12.8 V.
While the first part lasted quite a short time, the 0.8A charge lasted several hours.

Kraniec_Internetów wrote:

rafal_rx wrote:

charging with 0.8 V current

0,8?

Yes. I looked today at the notes and the switching took place at 14.08V (+/- 1.5% and +/- last digit).
At the earliest opportunity I will test the 3.8A normal mode.

Unfortunately, my battery is dead. As I am a fresh owner of this charger, I decided to try it out. I connect and ...... nothing. Error, standby and nothing. Two hours and nothing. I connected the old communist rectifier "harvester" for 3 hours and fired the car. I plug in lidlowski again and started off. Having my bad experience with discharged batteries, I drove (unfortunately) with a focus on buying a new one . Guy glanced. he asks how much battery he has (4 years and two months), he says that a good company battery (Banner) and strange that he got so completely out of scratch. He glanced under the traffic jams, said that he was not sulphated at all and that I would not buy a new one (aaa, over four hundred the same). Hmmmmm asking what I am loading. Me, that with Lidl an invention. He, because it certainly does not recharge as it should be, as he has already died, because the rectifier automatically turns off and does not recharge corpses (especially 80Ah) - they reportedly tested them at home. He added that if I have an old, good rectifier, I would care for him. I don't know anything about it, I don't want to pull out the battery (it's a lot of fun in Laguna) ), let alone make sure it doesn't boil. In total, for 20 zeta they can bring life to my battery in a day or two. Anyway, for now I'm charging lidl 9h, the voltage shows me 12.9V. Maybe it will reach noon until 14 am. Maybe .

Landman wrote:

He added that if I have an old, good rectifier, I would care for him. I don't know anything about it, I don't want to pull out the battery (it's a lot of fun in Laguna) ), let alone make sure it doesn't boil.

And he is right, and in order not to watch it, all you need to do is add to the rectifier a system that will interrupt the charging process when the voltage on the battery being charged reaches the set value. This interruption of charging can be permanent or can be resumed when the voltage on a disconnected battery drops to a certain (also adjustable) value.

Welcome .
Also, I wanted to refer to the rectifier from Lidl Rectifier with the function of boot assist Ultimate Speed from Lidl.

I have bought it a long time ago and I wonder whether to keep it because I am not somehow convinced of its parameters. Everything was written nicely, but probably not quite.

I noticed one problem. Namely, when we connect a battery below 10V or 8v I don't remember exactly because it was two years back then the charger treated it like charging a 6V battery and for China the charger did not switch on charging mode.
When I connected another battery with 12 V to this battery in parallel, the charger started the charging process.

The only thing that helped was the possibility of starting the car.




I wonder if this rectifier can somehow be upgraded or better to look for another.
Give me some ideas.

A 12V battery discharged to 8V is not surprising that it does not start charging.
Because a deeply discharged battery loses its parameters and its life is close.

If you want an intelligent rectifier with the possibility of charging a corpse it is only one with a forced charging mode. Otherwise it will detect the battery as a corpse or detect nothing. This is what the AEG LP 10 has. For 12V there will still be BOSCH C7, if you don't want to charge, you can activate it with the power supply mode (without short-circuit protection). I use what is at hand, e.g. a 12 V antenna power supply and after a while you can charge with an ordinary rectifier.

MIRAS-S wrote:

The only thing that helped was the possibility of starting the car

And how does this function work in it?