ICR18650-26F Battery Pack with BMS: Is a 29.4V Power Supply Sufficient for Charging?

Hello

I have an ICR18650-26F battery package with BMS. Is there a special charger needed to charge this package or is it enough for a 29.4V power supply? As if the balancer should secure the package, but I do not know.
greetings

Stick to the parameters from the documentation:
http://gamma.spb.ru/media/pdf/liion-lipolymer-lifepo4-akkumulyatory/ICR18650-26F.pdf

I know, but what is the difference between charger and power supply? only that the charger will disconnect the current with the appropriate voltage of the package anyway?

A good charger not only loads but also watches over voltage, current, temperature and time, even evaluates the condition and capacity of the cell.

You have to watch over the power supply because sometimes the error can be dangerous for you and the link.

i.e. the power supply must only give the maximum current how much can it absorb the batteries like this? and then it can be on the power supply? I am talking about a good impulse power supply, eg Mean Well

Everything as in the specification: charging voltage 4.2V, charging current 1.3A max 2.6A temperature max up to 45 degrees, and charging method CC-CV

I just do not understand this CC-CV method. Because I have a power supply selected with max voltage and max current, but I do not understand charging characteristics. Should the controller increase the voltage and current itself? Is it possible to disconnect the current only at full charge or at the proper voltage?

Here the seller has described the loading process easily and concisely:

http://www.hurt.com.pl/ladowarka-do-akumulato...indrycznych-li-ion-18650-xtar-mc2,p14463.html

that is, it would be necessary to measure the charging voltage (this is already done) and the current control. what if we leave the possibility of charging max power from the charger to the end?

The charger is supposed to act as a laboratory power supply, limiting the current if the voltage is below 4.2V ? 0.05V (for one cell), when the voltage reaches this value the current drops "alone" when the current drops below 0.05C, the charging should be stopped. The voltage measurement must be quite accurate, the "indicator" in the power supply may not be enough.

By reducing the maximum charging voltage and discharge depth, you can increase durability by accepting a lower capacity.

http://www.tme.eu/pl/details/clg-150-30a/zasilacze-do-led/mean-well/

will this power supply be good for charging my 7s package? has CV-CC mode

In the first post you asked if a special charger is needed, it is not necessary if the charging parameters match.
The answer to the question whether a given power supply is suitable for charging is not so simple, because it is determined not only by the catalog parameters, it also depends on the construction we do not know, so you do it at your own risk (unless you ask the power supply manufacturer or you can).
If you have to buy anyway, it's better to buy factory-ready equipment for charging.


Example:
I had an impulse power supply with a built-in crowbar overload protection (which short-circuits the overvoltage), I learned it only when the smoke went off the power supply after connecting the battery (Pb but not significant), the power supply was not adapted to such a connection and did not have a fuse after on the other side of the crowbar.

The maximum fast charging current of this battery is 2.6A, the minimum setting of this power supply is 2.5A, so it would only be possible to charge quickly. Fast charging is faster by only half an hour and the battery life will be less. The rest of the parameters are ok

sorry I did not specify a bit of charging current because the packet is 7s3p so the standard charging current is 3x1.3A = 3.9A

I will say it again. A certain company used a charger for li ion, but after some time they switched to this power supply, what I proposed only I do not know if they added some security or not, but rather they did not change anything in the construction of the device in which the battery was charged. So the charging parameters match but there must be a break which disconnects the charging after reaching 4.2V on the cell. Is it then enough to have such a power supply and a sensor that will completely unplug this power supply when it reaches the correct voltage?

TMEA wrote:

Is it then enough to have such a power supply and a sensor that will completely unplug this power supply when it reaches the correct voltage?

The shutdown is to be in CV mode but after the current drops below 130mA

and how to physically do it (CV)? do you want to let the current go through some resistor?

Guys, but he has a battery with a balancer, not the links themselves!
A good BMS will check the links and limit them according to their state of charge in the serial connection.
However, how your BMS works, only he knows that you, after appropriate measurements during charging.

BMS will be matched to the battery from the BTO company so probably a pretty good balancer is but I do not know exactly yet which one will be, but most likely http://www.bto.pl/produkt/43519/pcml07s15d127-dla-252v15a

I will refresh because the answer did not come.
So if the battery has a balancer, then he takes care of all the charging parameters, and the so-called the charger should only have enough voltage and current to meet the set parameters, which in many balancers are programmed via USB computer? (or they are made for a specific type of cells)

I'm right?

I want to hook up to the topic because I am trying to buy a LiFePo4 battery from CHRL with built-in BMS but I have no idea what charger / power supply I can use? The battery card is attached. It shows that the charging method is 0.2C (0.5A) CC / CV. The battery is to be used on a houseboat and charged from a solar cell (mono-crystalline power between 260W and 300W - supply voltage certainly above 14.6V) and from the 120W motor yacht's alternator. The question is whether I can use two solar panels or even more to charge this battery safely and without loss of capacity (i.e. the power of the panels respectively 520W or 780W?). Would you also need a separate voltage regulator for these panels?