Topdon AL500B Manuel De L'utilisateur page 30

How to understand the battery lable?
Let's use Figure 4.1.3 as an example:
Manufacturers
Part No.
E51
Reserve Capacity
1. Reserve Capacity: 80Ah
The Reserve Capacity is a time measurement that explains
how long a fully-charged battery can deliver 25 amps
current in an 80°F- environment, before the battery is
discharged and drops down to 10.5 volts.
2. Battery Type: AGM
Please refer to this list to check the most commonly seen
lead-acid battery types for your reference.
Figure 4.1.2
AGM
80Ah 12v
Voltage
Figure 4.1.3
Battery
Type
650
A
(SAE)
CCA in USA