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9.2 State of Charge
A voltage-based battery meter designed for lead-acid batteries will not provide
an accurate State-of-Charge (SOC) for lithium batteries. The following devices are
available from Discover and will provide an accurate state of charge:
• SOC GAUGE TYPE A
• SOC GAUGE TYPE B
The following devices are available from Discover and will communicate an
accurate state of charge to other devices:
• LYNK II Communication Gateway
• LYNK LITE Communication Gateway
9.3 Charging
Each electrical system will have different characteristics and balance-of-system
components. To optimize system performance, modifications to the charger’s
settings may be required.
NOTICE
Always confirm that the charging device is incapable of producing transient spikes
that exceed the published terminal voltage limits for the battery.
NOTICE
Never charge a visibly damaged or frozen battery.
NOTICE
Always confirm the charging curve meets the battery’s charging requirement.
9.3.1 Closed-Loop Charging
Closed-loop charging is a charging method whereby the battery communicates
with a charger and controls the charge voltage and current. Closed-loop
charging is available with compatible chargers directly connected to the
LYNK port or with compatible chargers through the
LYNK II
or
LYNK LITE
Communication Gateways
. Closed-loop charging reduces charge time and
increases balancing efficiency when compared to Open-loop Charging.
Refer to the appropriate Application Note available from
www.discoverbattery.
com
for closed-loop parameter setup and integration with specific brands of
solar inverter-chargers, solar charger controllers, mobile inverter-chargers, and
industrial chargers.
9.3.2 Open-Loop Charging
Open-loop charging is a method of charging where the battery and charger
do not have communication. In this method, the charger must be configured
manually with the appropriate charge algorithm settings.
For charging parameters, refer to
Table 2-1
DLP Electrical Specifications
.
