© 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