KT 50Ah User Manual Download Page 2

For safety reasons during shipping, the batteries are approximately charged at 50%. Therefore, it is recommended to fully charge the battery 
before use.

The li-ion battery charging process can be divided into 3 cycles:

Picture 5. Charging cycles

t0 – constant current CC;
t1- constant voltage CV;
t2- battery charged.

4.1. CHARGING

4.2. FIRST CHARGING 

4.3. CHARGING PROCESS – GENERAL INFORMATION

3. INSTALLATION

4. OPERATION

Kon-TEC Kraczkowa 1647 37-124 Kraczkowa, Poland

Tel.: +48 695 904 655 email: [email protected]

www.kon-tec.eu 

https://www.kon-tec.eu/batteries/

2

Picture 1. Single battery

Picture 2. Series connection

Batteries can be connected in parallel (capacity increase) and in this 
case there is no limit in number of batteries.
Pay attention the outgoing wires from positive and negative pole are 
not derived from the last battery. From the first battery should be wired 
positive (+) and the last battery should be wired negative (-). It is proper 
connection the battery that takes into account compensation of wire 
resistance and the batteries operate evenly loaded. Therefore, their 
lifetime is longer. Picture 3 shows parallel connection.

Batteries can be connected in series-parallel (the sum of 2 each 
voltage and the sum of 2 each capacity). Picture 4 shows wiring 
diagram for series-parallel connection.

Picture 3. Parallel connection

Picture 4. Series-parallel connection

3.3. PARALLEL CONNECTION

3.4. SERIES-PARALLEL CONNECTION

Picture 1 shows wiring diagram for one battery with load.

Batteries can be connected in series (output voltage increase)
in a maximum number of 4 batteries.
Picture 2 shows wiring diagram for series connection batteries
 with load.

3.1.  SINGLE BATTERY INSTALLATION

3.2. SERIES CONNECTION

Caution!

The batteries must always be mounted vertically. 
In the case of any type of connection, the batteries must be protected by a fuse placed in the circuit. 
When connecting batteries, remember to use the correct cross-section and the same cable length, to avoid unnecessary energy loss. 
Do not charge individual batteries in a circuit. 
When connecting batteries, make sure that their charge level is similar and that the battery type is the same.  
Otherwise when connecting batteries very high equalizing currents may flow, which may result in  
damage to the connected batteries or incorrect system operation. To make sure that the batteries are at the same charge level it is necessary to: 

1. 

charge each of them separately to full charge, 

2. 

connect the batteries in parallel and charge them again until they are fully charged,  

3. l

eave the batteries for 12 to 24 hours.  

After this proces you can combine the prepared accumulators in one of the systems described below: 
 

USER MANUAL - LiFePO4 

-  12,8 V

Caution!

For charging process use only dedicated charger by manufacturer. Non-compliance with user manual may cause damage
 to the battery or danger to health or life.
Charging process needs to be carried out under direct supervision. It is not recommended to leave the battery charging
without user’s supervision. It is not allowed to charge the battery at temperatures below 0⸰C.

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