BPL28-12-BB Battery12V28AH-TheuniversalseriesissuitableforUPSuninterruptiblepowersupply,electrictools,andemergencylights

BPL28-12-BB Battery12V28AH

### VRLA Rechargeable Battery
**Model: BPL28-12**

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#### Features
- **Applications**:
  - UPS (Uninterruptible Power Supply)
  - Wheelchairs
  - Lawn Mowers
  - Electronic Medical Equipment
  - Golf Carts
- **Maintenance-free**: No water topping-up required
- **No free acid**: Non-spillable battery
- **Low self-discharge rate**
- **Can be used in any orientation** (excluding inverted use)
- **Absorbent Glass Mat technology** for efficient gas recombination

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#### Specifications
- **Nominal Voltage**: 12V
- **Nominal Capacity**: 28.0Ah @ 20-hour rate (1.75V per cell)
- **Approx. Weight**: 9.7kg (21.39lbs)
- **Terminals**: B1 (Fitting M5 bolt & nut), T2, and I1 are optional
- **Internal Resistance**: ≤10mΩ (Fully Charged)
- **Max. Discharge Current**: 420A (5 sec.)
- **Max. Charge Current**: 8.4A
- **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)
- **Container Material**: Standard ABS (UL94 HB), optional Flame Retardant ABS (UL94 V-0)

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#### Dimensions (mm/inch)
- **Length**: 175 ± 1.5 (6.89 ± 0.06)
- **Width**: 166 ± 1.5 (6.54 ± 0.06)
- **Container Height**: 125 ± 1.5 (4.92 ± 0.06)
- **Total Height**: 125 ± 1.5 (4.92 ± 0.06)

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#### Terminal Type
- **B1**: Fitting M5 bolt & nut
- **T2**: Optional
- **I1**: Optional

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#### Constant Power Discharge Characteristics at 25°C/77°F (Unit: Watt)
| Time      | 10 Min  | 15 Min  | 30 Min  | 1 Hr    | 3 Hr    | 5 Hr    | 10 Hr   | 20 Hr   |
|-----------|---------|---------|---------|---------|---------|---------|---------|---------|
| 1.80V     | 81.6    | 56.4    | 31.4    | 16.4    | 83.2    | 57.2    | 32.2    | 16.8    |
| 1.75V     | 175.0   | 193.6   | 199.2   | 202.8   | 205.6   | 207.6   | 1056.0  | 608.0   |
| 1.70V     | 912.0   | 1056.0  | 1120.0  |         |         |         |         |         |
| 1.65V     | 685.6   | 742.8   | 769.6   |         |         |         |         |         |
| 1.60V     | 555.2   | 581.2   | 598.8   |         |         |         |         |         |

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#### Constant Current Discharge Characteristics at 25°C/77°F (Unit: Ampere)
| Time      | 5 Min   | 10 Min  | 15 Min  | 30 Min  | 1 Hr    | 3 Hr    | 10 Hr   | 20 Hr   |
|-----------|---------|---------|---------|---------|---------|---------|---------|---------|
| 1.80V     | 16.3    | 6.80    | 4.70    | 2.62    | 2.66    | 2.67    | 2.68    | 2.68    |
| 1.75V     | 82.2    | 60.4    | 48.3    | 28.3    |         |         |         |         |
| 1.70V     | 65.4    | 67.7    | 50.5    | 52.1    | 29.4    | 16.7    | 6.93    | 4.77    |
| 1.65V     | 96.9    | 102.8   | 70.7    | 54.3    |         |         |         |         |
| 1.60V     | 110.8   |         |         |         |         |         |         |         |

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This concludes the specifications for the VRLA Rechargeable Battery Model BPL28-12.