User Manual

additional loads connected to the battery while the DC2DC 24V is powered from either the
vehicle or solar inputs. A Bulk re-start will occur when battery voltage drops below 26.6V DC.
Smart Charging Feature
The ePOWER DC2DC 24V Battery Charger will regulate its output based on the loads connected
to your battery banks. This function is important to maintain the life of your battery banks as
some battery chargers mistake loads for discharge and continue to keep the batteries in the
bulk or absorption stage for extended periods of time, which will damage the battery bank.
The ePOWER DC2DC 24V Battery Charger has two methods of load based regulation to ensure
your battery charger transitions to oat when it should do so.
ePOWER charger algorithm
Battery Charging Curve For GEL, AGM, Flooded & Program Batteries:
CHARGE
CURRENT
V out ≥ V abs
for 1 min
V out ≥ V abs
for 1 min
L out < L setting
for 1 min
If V out < 25 Vdc for
15 min
BULK
CV ABS timeout 5 hr
Total ABS timeout 8 hr
FLOAT BULK
TIME
CC
ABS
CV ABS
Battery Charging Curve (Current) Battery Charging Curve (Voltage)
Lithium Battery charging algorithm
28.8V
28.4V
28.0V
27.6V
27.2V
26.8V
26.4V
26.0V
25.6V
Battery Current
Bulk Power Supply Mode
Time out 8 hrs max Time out 7 days
Diagram does not illustrate our current set points.
Maint. Power Supply Mode Return to Bulk
Battery Voltage
26.6VDC triggers
Bulk Restart
Note: Actual voltages depend on chosen algorithm.
Battery Charger Voltage
Battery Type Absorption Float (See Note 3) Equalisation
GEL 28.8 V 27.4 V N.A.
AGM 29.4 V 27. 2 V N.A.
Flooded 28.8 V 26.6 V 31V (See Note1)
Lithium
27.8 V-29.2V (0.2V Step)
(see Note2)
27V-28.4V
(0.2V Step)
N.A
Program (Custom
Settings)
27.6V-29.6 (0.2V Step) 26V-27.6 (0.2V Step) N.A
* For Concorde™ branded batteries (lifeline, sun xtender) use ooded setting and consult battery
supplier for equalisation recommendations.
Note 1: Equalisation setting can only be used on ooded battery type selection only. See
more details on Procedure to Equalise the Flooded Battery.
Note 2: Charger will terminate charging when charging current drops to below the set
charger termination value.
(Battery
recharge in Bulk
mode)
Enerdrive ePOWER DC2DC 24V Battery Charger Owners Manual (Rev. 1.5) www.enerdrive.com.auPage 10 Page 11