CB12280-CGB battery12V28AH-Suitable for precision instruments

**■FEATURES**

- AGM valve regulated sealing technology.

- High strength ABS material for container & lid.

- Wide temperature scope of application (-15~45℃).

- Best temperature of application (20±5℃).

- No leaking, safe and reliable.

- Can be used in a standing or lying position, convenient for transport and installation.

- High sealed reaction efficiency, with little loss of water; no need to add distilled water or electrolyte, making it simple to use and maintain.

- Low self-discharge rate.

**■SPECIFICATIONS**

  - Nominal Voltage: 12V

  - Capacity:

    - C20: 28Ah (10.5V, at 25℃)

    - Nominal Capacity (C20): 28Ah (10.5V, at 25℃); C10: 25.2Ah (10.5V, at 25℃)

  - Dimension:

    - Length: 165.5mm

    - Width: 125mm

    - Height: 175mm

    - Total Height: 175mm

  - Internal Resistance: Approx. 9 mΩ (25℃)

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

  - Weight: Approx. 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

**■STORAGE**

- Batteries should be stored in a dry and clean warehouse with good air exchange system. Avoid direct sunlight and proximity to heat sources such as radiators (maintain a distance of more than 1m). Avoid exposure to toxic gases and organic solvents.

- For storage, if the ambient temperature is less than 25℃, the longest storage life is 6 months. If the ambient temperature is higher, refer to the specified storage time in the chart below:

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

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

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

- Batteries should be recharged within their storage life or before use. Charging methods include a maximum charging current of 8.4A, constant voltage of 2.45±0.05V/cell (25℃), with a charging time of 15~20 hours. The temperature compensation coefficient is -5mV/℃/cell.