CBL12280-cgb battery12V28AH-Suitable for high-precision, high-performance UPS, EPS

**■FEATURES**

- Special formulation of grid alloys and lead paste, along with special manufacturing techniques, ensure high quality, high performance, and long life.

- AGM valve regulated sealing technology.

- Container and lid made of high-strength ABS material.

- Wide operating temperature range (-15~45℃).

- Optimal operating temperature (20±5℃).

- Leak-free, safe, and reliable.

- Can be used standing or lying down, making them convenient to transport and install.

- High sealed reaction efficiency, minimal water loss, no need to add distilled water or electrolyte, easy to use and maintain.

- Low self-discharge rate.

**■SPECIFICATIONS**

- Nominal Voltage: 12V

- Nominal Capacity (C20): 28Ah (25℃, 10.5V)

- Nominal Capacity (C10): 25.2Ah (25℃, 10.5V)

- Dimensions:

  - Length: 165.5mm

  - Width: 125mm

  - Height: 175mm

  - Total Height: 175mm

- Internal Resistance: Approximately 9 mΩ (25℃)

- Max Short-duration Discharge Current: 840A (25℃)

- Weight: Approximately 9.8kg

- Terminal: FP-01/RT-61/FO-21

**■CHARGE**

| **Using Mode** | **Charging Voltage** | **Temperature Compensation** | **Max Charging Current** |

|----------------|----------------------|------------------------------|---------------------------|

| Standby Use    | 2.275±0.025V/cell (25℃) | -3.3mV/℃/cell            | 8.4A                      |

| Cyclic Use     | 2.45±0.05V/cell (25℃)   | -5mV/℃/cell               | (Information Missing)      |

**■STORAGE**

- Batteries should be stored in a dry, clean, and well-ventilated warehouse. They should be kept away from direct sunlight and heat sources (such as radiators, with a distance of more than 1 meter). Batteries should also be kept away from any toxic gases and organic solvents.

- The longest storage life is 6 months when the ambient temperature is below 25℃. If the ambient temperature is higher, the longest storage life varies according to the table below:

| **Storage Temperature (℃)** | ≤25 | 26～33 | 34～40 |

|------------------------------|-----|--------|--------|

| **Storage Time (Month)**     | 6   | 3      | 1      |

- Batteries should be recharged within the storage life or before use.

- Charging methods: Maximum charging current of 8.4A, constant voltage of 2.45±0.05V/cell (25℃); Charging time: 15~20 hours; Temperature compensation coefficient: -5mV/℃/cell.