Topdon AL500B Manuel De L'utilisateur page 32

3. Voltage: 12V
When fully charged, automotive batteries should measure
at 12.6 volts (See Figure 4.1.5). However, this measurement
should be from 13.7 to 14.7 when the engine is running. If
the battery tester reads less than this standard, it means
that the battery's resting voltage is weak. In this case,
typically, the battery needs to be charged or replaced.
4. CCA: 650 (SAE)
The CCA rating refers to how many amps that a 12-
volt battery can deliver at 0°F in 30 seconds - while
maintaining at least a 7.2V voltage. This means that the
higher the CCA rating is, the easier the engine can be
cranked in cold temperatures.
Connect the Clamps to the Battery Terminals (See Figure
4.1.6)
● ALWAYS KEEP THE RED & BLACK CLAMPS FROM
TOUCHING.
● ALWAYS DISCONNECT THE NEGATIVE CABLE FROM
THE BATTERY FIRST AND RECONNECT IT LAST.
1. Before connecting the clamps to the terminals, please
use sandpaper to polish off the corrosion on the battery
terminals. With this, you can avoid inaccurate test values.
2. Attach the red clamp to the positive (+) terminal, and
connect the black clamp to the negative (-).
Figure 4.1.5