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MSU-500-BB Battery2V500AH-Valve controlled sealed colloidal batteries are suitable for uninterruptible power supply (UPS), laboratory equipment, and telecommunications systems

SPECIFICATIONS:**
- Nominal Voltage: 2V
- Nominal Capacity: 500Ah @ 10-hour rate F.V. (1.80V/cell)
- Approx. Weight: 30.8 Kg (67.9 lbs.)
- Terminals: B6 (Fitting M8 bolt & nut) Terminal I3 is optional
- Internal Resistance: ≤0.8mΩ (Fully Charged)
- Max. Discharge Current: 2200 A (5 sec.)
- Max. Charge Current: 125 A
- Operating Temperature Range:
- Charge: 0°C~40°C (32°F~104°F)
- Discharge: -20°C~50°C (-4°F~122°F)
- Storage: -20°C~40°C (-4°F~104°F)
- Safety Valve Opening Pressure: 10~35 kPa
- Container Material: Standard - ABS (UL94 HB), Optional - Flame Retardant ABS (UL94 V-0) MSU-500FR
- Dimension (mm/inch):
- Length: 211+2.0 (8.31+0.08)
- Width: 176+2.0 (6.92+0.08)
- Container Height: 329+2.0 (12.95+0.08)
- Total Height: 357+2.0 (14.06+0.08)

**VRLA Rechargeable Battery**

**MSU-500 (2V 500Ah)**

**FEATURES:**
- Sealed structure, no electrolyte leakage or spill.
- Telecom, UPS, Central Office, Energy Storage Systems.
- Special paste formula promotes good charging acceptance.
- Electrolyte with gel technology.
- High-performance alloy to secure corrosion-proof feature.
- Unique electrolyte system achieves maximum service life.

**SPECIFICATIONS:**
- Nominal Voltage: 2V
- Nominal Capacity: 500Ah @ 10-hour rate F.V. (1.80V/cell)
- Approx. Weight: 30.8 Kg (67.9 lbs.)
- Terminals: B6 (Fitting M8 bolt & nut) Terminal I3 is optional
- Internal Resistance: ≤0.8mΩ (Fully Charged)
- Max. Discharge Current: 2200 A (5 sec.)
- Max. Charge Current: 125 A
- Operating Temperature Range:
  - Charge: 0°C~40°C (32°F~104°F)
  - Discharge: -20°C~50°C (-4°F~122°F)
  - Storage: -20°C~40°C (-4°F~104°F)
- Safety Valve Opening Pressure: 10~35 kPa
- Container Material: Standard - ABS (UL94 HB), Optional - Flame Retardant ABS (UL94 V-0) MSU-500FR
- Dimension (mm/inch):
  - Length: 211+2.0 (8.31+0.08)
  - Width: 176+2.0 (6.92+0.08)
  - Container Height: 329+2.0 (12.95+0.08)
  - Total Height: 357+2.0 (14.06+0.08)

**OUTER DIMENSIONS:**
- Length: 211+2 (8.31+0.08)
- Width: 176+2 (6.92+0.08)
- Container Height: 329+2 (12.95+0.08)
- Total Height: 357+2 (14.06+0.08)

**TERMINAL TYPE:**
- Terminal B6: (Fitting M8 bolt & nut)
  - Initial Torque: 10.0 Nm + 5%

**Constant Power Discharge Characteristics at 20°C/68°F:**
(Unit: W)

| Discharge Time | 30 Min | 1 Hr | 2 Hr | 3 Hr | 4 Hr | 5 Hr | 6 Hr |
|---|---|---|---|---|---|---|---|
| 1.85V | 655.8 | 727.5 | 797.0 | 875.0 | 940.0 | 958.8 |
| 1.80V | 450.0 | 495.0 | 542.5 | 560.0 | 577.5 | 582.5 |
| 1.75V | 289.5 | 312.5 | 331.3 | 347.5 | 352.5 | 352.5 |
| 1.70V | 225.5 | 238.9 | 251.5 | 265.4 | 267.9 | 267.9 |
| 1.65V | 175.3 | 193.0 | 202.2 | 210.5 | 213.0 | 213.0 |
| 1.60V | 151.0 | 164.5 | 172.0 | 178.8 | 181.3 | 181.3 |

**Constant Current Discharge Characteristics at 20°C/68°F:**
(Unit: A)

| Discharge Time | 30 Min | 1 Hr | 2 Hr | 3 Hr | 4 Hr | 5 Hr | 6 Hr | 8 Hr | 10 Hr | 12 Hr | 20 Hr |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1.85V | 350.0 | 390.0 | 430.8 | 477.5 | 511.3 | 537.5 | 567.5 | 583.0 | 590.2 | 594.2 | 600.0 |
| 1.80V | 240.0 | 265.0 | 282.5 | 303.0 | 315.3 | 323.3 | 335.0 | 345.0 | 350.0 | 352.5 | 355.0 |
| 1.75V | 152.5 | 165.0 | 175.8 | 183.3 | 188.3 | 193.8 | 200.0 | 205.0 | 207.5 | 210.0 | 212.5 |
| 1.70V | 117.9 | 125.0 | 132.4 | 137.9 | 142.5 | 145.6 | 150.0 | 153.5 | 155.0 | 156.5 | 158.0 |
| 1.65V | 92.5 | 102.0 | 107.0 | 109.8 | 112.5 | 114.5 | 117.5 | 120.0 | 121.3 | 122.5 | 123.8 |
| 1.60V | 78.3 | 85.0 | 90.0 | 93.0 | 95.5 | 97.0 | 100.0 | 102.0 | 103.3 | 104.5 | 105.3 |

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