2
Use a separate
Installation manual for the 48V battery bank on a rack
for details about assembly,
installation and connection of the battery bank and the racking unit. This separate manual is included in your
battery bank delivery.
Make sure you always tighten the terminals well. Loose connections reduce performance, generate heat
and increase the risk of fire.
After your battery bank has been assembled, put covers on top of batteries (if they are included with your
batteries) and make sure that there are no other objects above the battery bank which might fall on it.
III. CHARGE & DISCHARGE
(data and values are provided per 1 battery)
A)
CHARGE
For Cycle Use
(when the battery is used as a regular power source and it’s discharged / charged frequently)
Charging voltage (at 25 ⁰C)
Initial charging current
Temperature coefficient
2.30V – 2.35V
100A max
-5mV/⁰C
If the battery is in cycle use, it is important to fully charge it regularly to minimise sulphation that may cause a
reduction in battery capacity. For best results use an intelligent multi-stage battery charger / charge controller
and make sure the battery is charged all the way to the final stage.
For Standby Use
(when the battery is mainly used as an emergency power source)
Charging voltage (at 25 ⁰C)
Initial charging current
Temperature coefficient
2.26V – 2.28V
100A max
-3mV/⁰C
Note: at the end of charging, the battery will generate flammable gas. Avoid using the battery near sources
of heat, sparks or in closed containers.
B) Discharging Current & Cut-off Voltage
In order to extend the lifetime of your battery, please do not allow it to get discharged completely. The final
battery voltage at which you should disconnect any load and stop discharging the battery depends on the
discharging current:
Discharging Current (A)
< 10A
10A - 80A
80A - 120A
120A - 300A
> 300A
Load cut off voltage (V)
1.85V
1.8V
1.75V
1.7V
1.6V
IV. HANDLING INSTRUCTIONS
A) Storage and refresh charge
1. Store the battery in a cool, dry place
2. During storage, the charge held by the battery decreases due to constant self-discharging. When the
monthly average temperature is more than 25°C but less than 40°C, please carry out supplementary
charging every 3 months. When the monthly average temperature falls below 25°C, please carry out
supplementary charging every 6 months.
