Battery
Maintaining the Rechargeable Lithium-ion Battery
TMS60 Operator’s Manual
13 - 7
13.7.2
Storing AA Batteries
If you remove undepleted AA batteries from the TD60 and need to store the batteries,
keep the batteries together as a set for later re-use so that all batteries will have the same
level of remaining power.
Do not store disposable AA batteries by leaving the batteries in the incorrect polarity
position in the TD60.
13.8
Maintaining the Rechargeable Lithium-ion Battery
Take care of the rechargeable lithium-ion battery once you receive a new battery for use.
The following table describes the battery maintenance activities and recommended fre-
quency.
The lifetime of a lithium-ion battery depends on the frequency and duration of use. With
good maintenance, the useful life is approximately 500 complete charge-discharge
cycles. Experience indicates that the incidence of failure may increase with battery ser-
vice life due to the accumulated stresses of daily use. Therefore, Mindray strongly recom-
mend that lithium-ion battery should be replaced after two years or 500 complete
charge-discharge cycles. Using the outdated battery may cause the device abnormity
and unacceptable performance.
NOTE
•
Replace the AA battery tray on the battery compartment after removing
the AA batteries.
Activity
Recommended Frequency
Visual inspection
Before installing a battery in the TD60.
Charge the battery
Upon receipt, after use, a “Low Battery” or “Critically Low Bat-
tery” alarm occurs.
To optimize performance, a fully or almost fully discharged
battery must be charged immediately.
Clean the battery
At each patient discharge, or in case that the battery is
exposed to contaminants.
Do not clean the battery connector during the cleaning.
Charge stored battery to at
least 40% of the battery
capacity.
Every six months if the TD60 is not in use for an extended
period of time.
Dispose of the battery
When the “Battery Maintenance Required” alarm message
displays on the TD60.
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