Bosch 8-Dec - Manual (Page 113)

Accessories for Control Panels and Keypads | Power Supplies and Batteries | 105
D1250 Battery (12 V, 5 Ah)
Features
▶ 12 VDC sealed lead‑acid
▶ Fully rechargeable
▶ Maintenance‑free
▶ For use as secondary power for accessory modules
▶ Long service life
A 12 V sealed lead‑acid battery. It acts as a
maintenance‑free standby and auxiliary power supply that
provides long service life and dependability. Use the battery
only with charging circuits calibrated for lead‑acid
batteries. It is suitable for supplying backup power for fire,
security, and access control systems during AC power
failures.
Installation/Configuration Notes
Standby Power Requirements
Refer to the appropriate control panel installation manual
for information on calculating the standby battery
requirements for the system. Total continuous and
intermittent current requirements must not exceed the amp
hour capacity of the battery.
Technical Specifications
Physical Specifications
Nominal Voltage: 12 V
Nominal Capacity
(20 Hour)
5 Ah
Weight: 1.85 kg (4 lb)
Dimensions: 10 cm x 9 cm x 7 cm (4 in. x 3.5 in. x 2.8 in.)
Height with Terminals: 10.6 cm (4.2 in.)
Standard Terminal: FI-Faston Tab No. 187
Capacity
20 Hour rate (0.25 A): 5 Ah
10 hour rate (0.45 A): 4.5 Ah
5 hour rate (1 A): 4 Ah
1 hour rate (5 A): 3 Ah
Capacity Affected by Temperature
40°C (104°F): 105%
30°C (68°F): 100%
0°C (32°F): 85%
Constant Voltage Charge
Cycle: Initial charging current less than 1.3 A.
Voltage 7.20 V to 7.50 V at 20°C (68°F).
Temperature Coefficient -15 mV/C.
Standby: Initial charging current less than 1.26 A.
Voltage 6.75 V to 6.90 V at 20°C (68°F).
Temperature Coefficient = 10 m V/C.
Ordering Information
D1250 Battery (12 V, 5 Ah)
A 12 V sealed lead‑acid battery for standby and
auxiliary power. Suitable for supplying backup
power for fire, security, and access control
systems during AC power failures.
D1250
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