Sizewise Evolution - Emergency Battery Backup Details

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Emergency Battery Backup
In case of power failure the emergency battery backup will operate the bed. Use only in
emergency situations, the battery backup is not designed for continuous use. The battery will
recharge itself while the bed is plugged into a hospital grade or grounded outlet.
This bed is equipped with two 5 amp 12V sealed lead-acid (gel) batteries (total 24V). New
batteries, or batteries stored for a long time, may take more time to charge. Keep the battery near
room temperature when charging.
Battery Specifications:
Battery Characteristics:
*The above characteristics data are average values obtained within
three charge/discharges cycles, not the minimum value.
The specifications and characteristics of the battery are from the manufacturer’s guidelines sheet.
If the battery needs to be changed, follow the manufacturer’s specifications listed in this section
as well as the information listed in the section Replacement Instructions Battery Replacement
page.
Nominal Voltage
12V
Rated Capacity (20 Hour Rate)
5Ah
Dimensions
Length
3.54 in (89.9 mm)
Width
2.74 in (70.1 mm)
Height
3.98 in (101.1 mm)
Total Height
4.21 in (106.9 mm)
Approximate Weight
3.09 lbs. (1.4 kg)
Capacity*
25°C (77°F)
20 Hour Rate (0.25A)
5Ah
10 Hour Rate (0.47A)
4.65Ah
5 Hour Rate (0.85)
4.25Ah
1 Hour Rate (3.00A)
3.00Ah
Internal Resistance
(milliohms)
Fully Charged Battery
25°C (77°F)
Approx. 50
Temperature
Dependency
of Capacity
(20 Hour Rate)
40°C (104°F)
25°C (77°F)
0°C (32°F)
-15°C (5°F)
102%
100%
85%
65%
Self-Discharge
25°C (77°F)
Residual Capacity After
Standing 3 Months
91%
Residual Capacity After
Standing 6 Months
82%
Residual Capacity After
Standing 12 Months
64%
Charge
Method
(Constant
Voltage)
Cycle Use
(Repeating
Use)
Initial Current
1.75A
or smaller
Control Voltage
14.5-14.9V
Float Use
Control Voltage
13.6-13.8V