Brainlab Robotics Hardware User's Manual page 57

ROBOTICS
How a Battery Charges
No.
①
②
③
Decommissioning the Battery
Warning
If Robotics is not expected to be used for an extended period of time, the battery should be
removed and stored separately. The battery must only be exchanged by Brainlab service
staff and/or authorized service partners.
Hardware User Guide Rev. 1.0 Robotics Ver. 2.1
Phase
Charging Phase 1
Charging Phase 2
Charging Phase 3
②
①
Figure 18
Description
In the first sequence, the battery is charged with a constant
charging current of approximately 2 A. Depending upon the
initial battery charging condition, this sequence may last
several hours. During this sequence, the battery will reach
approximately 60% of its maximum capacity.
Once the battery reaches its end-of-charging voltage, the
charging current is decreased automatically and adjusted
to keep this maximum voltage constant. This phase is nec-
essary to fully charge the battery to 100%.
NOTE: The top-off voltage is temperature dependent and
therefore can show slightly differing values.
If the remaining charging current in the second phase has
dropped below 100 mA, the battery is fully charged.
To avoid super-charging the battery, the current is adjusted
so that the continuous trickle-charge voltage is kept con-
stant. In this state, the battery is kept ready for use and on-
ly the internal electrical loss is equalized until the battery
charger is unplugged.
③
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