Lithium Charging Instructions

Charging Instructions 09.02.20
CHARGING INSTRUCTIONS
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Charging Parallel Systems
When connecting batteries in parallel, please make sure each battery is within 50mV (0.05V) of each other before putting them in
service. This will minimize the chance of imbalance between batteries.
1 Stage Charge Profile - CC
1-STEP CHARGE
DESCRIPTION
STEPS DESCRIPTION CHARGE PARAMETERS
Step 1 - Charge
at a constant
current until
the battery
reaches
termination
voltage.
1
*Recommended
Charge Current
≤0.5C (C = Capacity of battery system)
**Maximum
Charge Current
0.75C (C = Capacity of battery system)
SYSTEM VOLTAGE 12V 24V 36V 48V
Stop
Termination
Voltage
14V – 14.2V 28V – 28.4V 42V – 42.6V 56V – 56.8V
2 Stage Charge Profile - CC-CV
1-STEP CHARGE
DESCRIPTION
STEPS DESCRIPTION CHARGE PARAMETERS
Step 1 - Charge
at a constant
current until the
battery reaches
absorption
voltage.
Step 2 - Hold
absorption
voltage until
charge reduces
to termination
current.
1
*Recommended
Charge Current
≤0.5C (C = Capacity of battery system)
**Maximum
Charge Current
0.75C (C = Capacity of battery system)
SYSTEM VOLTAGE 12V 24V 36V 48V
2
Absorption
Voltage
14V - 14.2V 28V - 28.4V 42V - 42.6V 56V - 56.8V
Stop
Termination
Current
≤0.05C (C = Capacity of battery system)
* Charge current must be reduced at temperatures <0C (32F). See details in Charge Temperature section.
** For optimum life, charge at recommended rate. Some models are specially designed to allow for higher current.
If your charger’s voltage is lower than those listed in the tables, it will not damage your battery, however it will be under-charged,
and it will not provide the full rated capacity of the battery. If your charger’s voltages are higher than those listed in the tables
above, the BMS may disconnect the battery and you may have to remove the load to reconnect. We recommend you replace the
charger to avoid this inconvenience.