12V 3.6Ah Gel Battery Charging: Optimal Current & Duration to Avoid Overcharging

Hello.
I bought a 12V 3.6Ah gel battery.
With what current to charge it and how long would it not be overcharged?
It seems to me that the current is 10% of the capacity. Am I right?

Read here:
http://www.cyfronika.com.pl/zelowe_instrukcja.htm

Thanks, but nothing about the charging time.
There is a table, but unreadable.

Hello

It will be added to the topic because I have just started charging the HPG 7Ah gel battery with the ZHAOXIN PXN-1505D stabilized power supply and my question is how do I know when it will be charged, since the power supply set to a voltage of 13.8 V will constantly stabilize this voltage, so its value does not change? The charging current has changed, it started from 0.7 A and after an hour it is already 0.34 A to how many should I hold it?

The battery does not heat up after an hour.

Please help


Regards

Hello. [olijacek] When the current drops to 0.1A (0.05A), the battery can be considered charged. If you charge from time to time, and do not connect it as a backup power supply (continuous charging), then you should charge with 14.4V.

Thanks a lot, I'm already turning it up to 14.4
How much PKT does such advice cost?

It is not about points, but that the equipment should serve you well for a long time. By the way, you probably know that if you discharge the battery below 10.6V and do not charge it quickly, it will be over after 2 days.

It's cool, the new had 12.7 V at the output, I will see how quickly it loses current under load, i.e. discharge to 11 Volt? It would be necessary to make a circuit that cuts off the current, I think there are such systems?

They are, but what do you want to feed with this?

LED lighting, I think that with 5A it is max and if too much is 3A enough.

Such something should be secured. Read on. https://www.elektroda.pl/rtvforum/topic233018.html#605818, http://www.torch.pl/forum/index.php/topic.54565.0.html, http: //www.aphelektra. com / p / en / 1004 / e + 4 + protection + battery + gel + 12v + against + deep + discharge.html

Thanks for the links, I have already chosen something for myself and I still have a question, after charging the battery and disconnecting from charging, the voltage dropped to 13.2 V is it normal?

Yes, that's normal.

Hello

I soldered this module E4 http://www.aphelektra.com/p/pl/1004/e+4+ protection+ of the battery+ gel+12v+ against + deep+ discharging.html

And its not working does not give voltage at the output, how should i fix it?

Ok, some idiot already described the opposite input and output.

olijacek wrote:

LED lighting, I think that with 5A it is max and if too much is 3A enough.

Poor choice (battery) unless it comes to power emergency i.e. in the event of an occasional power outage in the network. The so-called gel batteries , which are nothing but a variety of batteries lead acid They are kept in a state of continuous charge, and if there is a need to take energy from the battery - it is recharged as soon as it becomes possible. In such conditions (similar to the conditions prevailing in a normally used car), all lead batteries have good durability. However, they wear out the faster the deeper they are discharged, and the longer the discharge (even partial) will last. Some of them have slightly improved resistance to deep discharge; then their durability is determined (e.g. 200 cycles), assuming that the time, and thus the discharge current, will be strictly defined. Discharging with a current both lower and higher than the rated current reduces the number of useful cycles: in the first case, the battery remains in a state of incomplete charge, in the second case - the battery temperature increases, and with it the lead sulphate recrystallization rate on the electrodes, which is commonly referred to as sulfation . Other versions of lead batteries, including common car batteries, but also gel marked "Designed for standby use" should in principle not be operated cyclically (full discharge - charge) because each such cycle noticeably and irreversibly reduces their capacity, but only used for buffer operation.
Batteries, on the other hand, are ideal for circular operation alkaline , mp nickel metal hydride (NiMH). It does not hurt them at all either to fully discharge, or to stay in this state for any length of time. With this execution hermetic (including "batteries" from AAA / R03 to D / R20) are also not sensitive to overcharging, provided that the current is limited to 0.1C (e.g. 1A for a 10Ah battery). polarity reversal which can happen when the battery is too deeply discharged of cells with different charge levels connected in series. On the other hand, for ordinary lead batteries, overcharging is always harmful (water in the electrolyte decreases, gas bubbles crumble the active mass from the electrodes), while in the battery gel it leads to its immediate destruction as a result of electrolyte stratification. Hence a particularly strict requirement for the end voltage of battery charging gel which an ordinary lead acid charger cannot generally provide.
So it was better instead of the battery gel purchase the appropriate number of NiMH cells (9 to 10 in case of 12v power supply). The most common batteries R6s have a capacity of over 2.5Ah, R14s will have much more than 3.5Ah, while the relatively common R20 can reach up to 10Ah.

And supposedly everything in Mr. Tomek's post would be correct, but ...
The costs of "building" a NiMh package corresponding to the parameters of a gel battery are 6 times higher.
I use a gel in modeling (I discharge and charge the battery, but I do not allow it to be discharged to a voltage lower than 11v) and I charge it immediately after returning from the field. The battery lasted for 2 years and is still alive. The cost of a new gel battery (12V 7A) is about PLN 40, while a decent quality NiMH R20 cell costs PLN 30 (10 of them are needed).
In addition, the warranty for the gel battery is 2 years.

Regards Krzysiek

Hello
I will connect to the old topic. I bought a corci scooter with a gel battery. The battery is 6v 7 ah. 500 has a charger and, according to the instructions, charge it for about 8 hours.
I want to buy her 6v 14 ah battery so that she will ride longer because for those max 2 h. Will this charger pull the 14 ah battery if the battery manual says charge with max 3.5 A current. I can buy a charger for PLN 60 but it also says 1.8 AND

xxxwa wrote:

The battery is 6v 7 ah. 500 has a charger and, according to the instructions, charge it for about 8 hours.
I want to buy her 6v 14 ah battery so that she will ride longer because for those max 2 h. Will this charger pull the 14 ah battery if the battery manual says clearly charge with max 3.5 A current

500mA

thanks.
1. that is, the 500 ma charger charges the battery with a speed of 1 A for 2 hours. So I have to charge the 14 ah battery for 28 hours (over a day).
2. And why, for example, on a 14 ah battery it says that the maximum current is 3.6 A.
I'm sorry but I'm a layman in this

xxxwa wrote:

that is, the 500 ma charger charges the battery with a speed of 1 A for 2 hours.

1Ah for 2h.

xxxwa wrote:

And why, for example, on a 14 ah battery it says that the maximum current is 3.6 A.

Because the bigger one can destroy it.

And I have a question, I have a small 0.82Ah gel battery, what charger to charge it because, for example, there are chargers on Allegro, but usually from 2Ah up?

If I have a 6A - 6V / 12V transformer rectifier, when charging a gel battery, I have to add something in series so that the battery charger does not damage me? (I have nothing to adjust on the panel)

Aku is a 6V 4.5Ah gel

Irenty wrote:

And I have a question, I have a small 0.82Ah gel battery, what charger to charge it because, for example, there are chargers on Allegro, but usually from 2Ah up?

As a general rule - no.

david8213 wrote:

If I have a 6A - 6V / 12V transformer rectifier, when charging a gel battery, I have to add something in series so that the battery charger does not damage me? (I have nothing to adjust on the panel)
Aku is a 6V 4.5Ah gel

Control the charging current and end voltage, if the current is too high, put the resistor in series (the bulb will work). When the voltage rises to the expected level, disconnect the rectifier.

Speaking of charging the batteries, I will step on with a little more problem. Could someone explain to me how and with what are the systems of cells in battery rooms, e.g. in a power plant, charged? I have 100 2.2V 490 Ah gel cells + 15 additional cells. They are to be powered by 4 rectifiers. What charging voltage should this rectifier have? A single cell has 2.2 V, but the whole connected in series is 220 V. The battery data only states that the maximum charging current cannot exceed 0.2 C, which for these batteries means max. 98 A ...

Link to battery documentation

Regards
Zyt