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© Aquion Energy, Inc. | 32 39th St, Pittsburgh, PA 15201 | 412.904.6400 | aquionenergy.com
PRODUCT SPECIFICATION SHEETAquion Energy’s S20-008F Battery Stack is cost-effective, high-performance, safe, and sustainable energy storage for long-duration, deep cycling applications.
PRODUCT INFORMATIONProduct Operating Window: 30 - 59 Vdc
CONNECTORS
FemaleAmphenol H4(Part No. H4CFC4DI)
MaleAmphenol H4(Part No. H4CMC4DI)
S20-008F Battery Stack For models S20-008F and S20-0080
935 310
330
* Cycle life to 80% retained capacity
OPERATION & PERFORMANCECycle Life >3,000 cycles*
Usable Depth of Discharge 100%
Operating Temperature Range -5°C to 40°C ambient
Round Trip DC Efficiency >85% at 20 hour discharge, 30°C
Charge / Discharge Modes CC, CP, CV
IP Rating IP22 Rated
Shipping Testing Tested to ISTA 6B
PHYSICAL CHARACTERISTICSHeight 935 mm (36.8”)
Width 330 mm (13.0”)
Depth 310 mm (12.2”)
Weight 113 kg (249 lbs)
Certifications UL Recognition Targeted
In-Line Fusing 15 A (Unfused Model Available)
Voltage Range 30 to 59 Vdc
Nominal Capacity 51.0 Ah at 20 hour discharge, 30°C, to 30 Vdc
Nominal Energy 2,395 Wh at 20 hour discharge, 30°C, to 30 Vdc
Nominal Voltage 48 V
Continuous Power 450 W
Maximum Current 15 A
Time (h) 4 8 12 20
Current (A) 10.4 5.6 3.9 2.5
Capacity (Ah) 41.6 45.3 47.8 51.0
Energy (Wh) 1,635 1,955 2,150 2,395 Constant Current Discharge, 30°C
Time (h) 4 8 12 20
Current (A) 7.7 5.4 3.9 2.5
Capacity (Ah) 30.8 43.7 47.7 50.2
Energy (Wh) 1,335 1,780 2,040 2,360 Constant Current Discharge, 30°C
Operating Window for Common Inverters: 40 - 59 Vdc
AQ-SP-00016_C
Performance characteristics based on testing conducted by Aquion Energy. Performance may vary depending on use, conditions, and application. For the most up-to-date specification, visit our website: http://info.aquionenergy.com/download-specs
Energy vs. Discharge Duration
Discharge Duration (h)
Ener
gy (W
h)2500
2000
1500
1000
500
00 5 10 15 2520
30V cutoff40V cutoff
Voltage vs. Capacity
Capacity (Ah)
Vol
tage
(V)
10 8 6 4 2
60
50
40
30
20
10
0
Current (A)
0 10 20 30 5040 60
30V cutoff40V cutoff
Voltage vs. Discharge Energy
Discharge Energy (Wh)
Vo
ltag
e (V
)
60
50
40
30
20
10
0
10 8 6 4 2
0 500 1500 20001000
Current (A)
2500
30V cutoff40V cutoff
© Aquion Energy, Inc. | 32 39th St, Pittsburgh, PA 15201 | 412.904.6400 | aquionenergy.com
Energy vs. Discharge Current
Ener
gy (W
h)
Discharge Current (A)
2500
2000
1500
1000
500
00 2 4 6 128 10
30V cutoff40V cutoff
Current vs. Discharge Duration
Discharge Duration (h)
Cur
rent
(A)
0 5 10 15 2520
15
12
9
6
3
030V cutoff40V cutoff
Round Trip Efficiency vs. Current
Current (A)
Effici
ency
(%)
0 2 4 6 8 10
100
90
80
70
6080% SOC60% SOC40% SOC20% SOC
S20-008F Battery Stack PERFORMANCE DATA AT CONSTANT CURRENT DISCHARGE
AQ-SP-00016_C