User's Manual

Table Of Contents
Battery Maintaining the Rechargeable Lithium-ion Battery
TMS60 Operator’s Manual 11 - 7
11.8 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
frequency.
The lifetime of a lithium-ion battery depends on the frequency and duration of use. With
good maintenance, the useful life is approximately four years or 500 complete charge-
discharge cycles. In addtion, experience indicates that the incidence of failure may
increase with battery service life due to the accumulated stresses of daily use. Therefore,
Mindray strongly recommend that lithium-ion battery should be replaced after two
years or 300 complete charge-discharge cycles. Using the outdated battery may cause
the device abnormity and unacceptable performance.
The age of a lithium-ion battery begins at the date of manufacture. The date of
manufacture is listed on the rear of the battery.
NOTE
Replace the AA battery frame 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.