REXC series

6REXC300

Feature
l Design life 20 years
l Combine the advantage of lead acid battery
Application
and supercapacitor l Home energy storage system
l Ideal for PSOC cycle application l Smart power grids and microgrid system
l High power, repid charge/discharge l Distributed energy storage system
l Reduce sulfation of negative plate, excellent l Hybrid energy storage system such
recharge acceptance performance as solar and wind
l Waterproof, anti-salt treatment, shockproof l Solar power generation grid/off-grid
module installation design energy storage system
l Comply with IEC60896,IEC61427 etc. standard l Emergency lighting system
l Generator and battery hybrid energy system
Parameter l Other standby, cycling system

Dimension Nominal Voltage 6V

Capacity 300Ah (100hr to 1.85V/cell @25°C)
338 224 250Ah (10hr to 1.80V/cell @25°C)
Typical Weight 61kg
Internal Resistance Approx 1.35mΩ (acc. to IEC60896-21 clause 6.3)
Short-Circuit Current 4619A
294

281

Self Discharge Residual capacity is above 90% after 90 days storage(25°C)

Temperature Ranges Operation(recommended):15°C~25°C
Operation(maximum):-20°C~50°C
Max. charging current 75A
Max. constant charging current 50A
Charge Voltage Floating: 2.25V/cell(25°C)
Equalizing/Cycle: 2.30V/cell(25°C)
Terminal M8 embedded copper
Terminal Hardware Torque >10N.m

Constant Current Discharge Characteristics Units: Amperes(25℃)

End voltage per cell 60min 3hour 5hour 8hour 10hour 24hour 48hour 72hour 120hour

1.75V 150.80 69.33 48.13 33.73 25.61 12.52 6.47 4.43 2.81
1.80V 141.20 67.20 47.07 33.07 25.00 12.32 6.32 4.33 2.75
1.83V 132.27 65.07 45.87 32.53 24.51 12.05 6.19 4.24 2.69
1.85V 127.47 63.73 45.47 32.13 24.27 11.91 6.16 4.21 2.67
1.88V 122.13 62.40 44.93 31.73 24.15 11.80 6.11 4.17 2.65
1.90V 113.20 59.73 43.73 30.93 23.54 11.65 5.95 4.07 2.59

Discharge Data with Constant Power Units: Watts per cell(25℃)

End voltage per cell 15min 30min 1hour 2hour 3hour 4hour 5hour 6hour 8hour 10hour
1.75V 769.1 549.3 302.1 178.5 137.3 109.9 93.4 82.4 64.5 54.9
1.80V 757.9 541.3 297.7 175.9 135.3 108.3 92.0 81.2 63.6 54.1
1.83V 742.9 530.7 291.9 172.5 132.7 106.1 90.2 79.6 62.4 53.1
1.85V 728.1 520.0 286.0 169.0 130.0 104.0 88.4 78.0 61.1 52.0
1.88V 709.3 506.7 278.7 164.7 126.7 101.3 86.1 76.0 59.5 50.7
 Discharge curve at different rate (25℃) Charge curve (25℃)

Charge current(CA)
Charge capacity(%)

Charge voltage(V)
13.20

12.00
Discharge voltage (V)

10.80 Charge voltage

C 10 C 120
C1 C3 13.8 Charge capacity
9.60
3C 2C 1C
13.5
8.40 100% discharge

7.20 12.9 50% discharge

12.3
1
Charge current
Minute Hour
0 2 4 6 8 10 12
Time ( h )

Capacity vs OCV curve Residue capacity vs storage time

13.5

13.0
OCV (V)

Capacity (%)

12.5

12.0

11.5

11.0

6REXC300 -01-N-EN (ver 2.2-August.2015) Subject to revision without prior notice.E.&.O.E.

Capacity (%) Storage time (months)

Capacity vs temperature curve Design life vs temperature

100 10hr
24

20
Design life (years)
C10 Capacity (%)

80
4hr
16
60
2hr
12

40 8

4
20

0
20 10 0 10 20 30 40 50 25 30 35 40 45 50

Temperature (℃) Temperature ( ℃）

Zhejiang Narada power source Co., Ltd.

Add:Building A, No.822 Wen'er West Road, Zhejiang, China
Tel: (86 571)56975980 Fax:(86 571)56975955
Email: intl@narada.biz Website: www.naradapower.com

Subject to revision without prior notice