These are small Sealed Lead Acid batteries that are generally used for semi-portable appliances that need more power or a fair bit of power (more than can be provided by D, C or AA cells) for a longish time. The amp-hour rating tells you how long the battery will last before it goes flat. For example, a 7.2Ah battery will give 7.2 amps for one hour or 3.6 amps for 2 hours or 1.8 amps for 4 hours, etc. Also often found in alarm systems, NBN installations, and other critical systems with backup batteries.
Features: 
  - Charge current 720mA for 10-14 hours
   - Discharge current 20 hr rate 350mA
   - Max Discharge Current (5 sec):40A
  
Cycle: 
  - Voltage 14.40V~15.00V @ 20 Degrees C (68 Degrees F)
   - Temp Coefficient: - 30mV/ Degrees C
  
Standby: 
  - Voltage 13.5V~13.80V @ 20 Degrees C (68 Degrees F)
   - Temp Coefficient: - 20mV/ Degrees C Also often found in alarm systems, NBN installations, and other critical systems with backup batteries.
  
Product Specifications
 - DC Voltage : 12.0V
 
 - Length : 151.0mm
 
 - Height : 93.0mm
 
 - Depth : 65.0mm
 
 - Recharging Voltage : 14.4V, 15.0V
 
 - Standard Recharge Current : 750.0mA
 
 - Recharging Time : 12.0hr
 
 - Battery Chemical Composition : Sealed Lead Acid (SLA)
 
 - Battery usage : Rechargeable
 
 - Battery Peak Current : 108.0A
 
 - Amp Hour Rating : 7.2Ah
 
 - 20 Hour Capacity : 7.2Ah
 
 - 10 Hour Capacity : 6.5Ah
 
 - 5 Hour Capacity : 5.75Ah
 
 - 1 Hour Capacity : 4.32Ah
 
 - Internal Resistance : 25.0Ohm
 
 - Connection Type : Spade Terminals
 
 - Type of battery : SLA Block
 
| Length : 15.6 cm  | 
Width : 7 cm  | 
| Height : 10.4 cm  |