RAYSTECH LFP Battery Series & Parallel Guidance
1. Batteries cannot be used in mixed batches, only the same batch can be used in series
or parallel
2. Each battery must be fully charged before the batteries are connected in series or in
parallel, and the voltage difference of the battery pack should be within 100mV
3. When the battery is under voltage, the BMS will perform shutdown protection. At this
time, press the switch on the display, and the display will light up, but the battery has no
output at this time; you can connect the battery to the inverter to charge or use the charger
to charge and activate the battery , and the display switch can also wake up the battery.
4. During the battery charging process, the charging mode will change from CC to CV, and
when the OLED display shows full power, the mode will automatically switch to CV mode.
After the battery is fully charged, it will automatically enter the balance state. Do not
remove the charger at this time and continue to charge the battery until the OLED display
voltage is 14.6V (12.8V battery)/29.2V (25.6V battery)
5. The maximum current of the battery system used in series or parallel is 100A
6. When the batteries are used in series or in parallel, the DIP switches must be set
correctly according to the user manual. Confirm all the power cables and communication
cables are connected correctly, then the load can be connected. Finally, according to the
order from the last slave battery to the master battery, turn on the battery in turn, please be
sure to start the master battery at last (the power cables should be as thick as possible and
has good conductivity, the contact surface of the connection is large, and there is no
looseness, etc.)
7. When the batteries are used in series or in parallel, the battery which connected to the
positive pole of the load is used as the master battery, other batteries are slaves, and the
negative pole of the last slave is connected to the negative pole of the load.
8. Do not press the button to turn off any battery or change the DIP switch during use,. If
you want to change the mode, please turn off all the batteries in turn according to the
power-on sequence, and finally disconnect the load. Then you can reset the mode
according to the user manual.
PCS Recommended charging and discharging protection
threshold parameters:
12V system PCS recommended charging voltage parameter for serial connection 3.6V x
4Cell=14.4V Discharge cut-off protection voltage 2.7 x 4Cell=10.8V
24V PCS recommended charging voltage parameter for serial connection 3.6V x
8Cell=28.8V Discharge cut-off protection voltage 2.7 x 8Cell=21.6V
48V PCS recommended charging voltage parameter for serial connection 3.6V x
16Cell=57.6V Discharge cut-off protection voltage 2.7 x 16Cell=43.2V
