SP Range User Guide v7 June 2020
Installation & User Guide
SP Range
11
7.0
User Guide
Once the battery is securely installed and electrically connected it will automatically be available for
use. The internal BMS will actively ensure the battery is protected and operating safely at all times.
The battery requires no user interface or intervention under normal conditions.
The SP models come with a digital colour LED voltmeter which measures the battery voltage in real
time and can be used as an indication of battery state of charge. The voltmeter can be turned on and
off via the red rocker switch.
Please note, unlike lead acid batteries, lithium batteries hold their voltage over the cycle, dropping off
only when the battery is ~90% discharged, as indicated below for illustrative purposes.
Pay attention to this when assessing how full the battery is. Once the voltage starts to approach 12V
it is nearing empty and should be charged. Some helpful hints:
1.
A normal full battery open circuit voltage (Voc) with no load rests at 13.3V to 13.4V;
2.
Depending on the load it may dip 0.5V below the Voc;
3.
Below 12V the battery is close to empty and should be charged; and
4.
Low Voltage Disconnect (LVD) is set at ~10.5V.
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Batt
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Vo
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Depth of Discharge (DoD)
Discharge Curve: Lithium vs Lead Acid
Lead Acid Voltage (v)
Lithium Voltage (V)
