Technical data

176 Chapter 11
Working with Batteries
Battery Care
Working with Batteries
WARNING Do not discharge the battery using any device except the
specified device. When the battery is used in devices other than
the specified device, it may damage the battery or reduce its life
expectancy. If the device causes an abnormal current to flow, it
may cause the battery to become hot, explode, or ignite and
cause serious injury.
Maximizing Battery Life
The Lithium Ion battery used in the N1996A has a life span of
approximately 300 charge cycles at room temperature, with normal
charge and discharge rates. You can maximize the number of charge
cycles with reasonable battery care:
Clean the battery contacts occasionally, using a pencil eraser or
alcohol and a cotton swab. Make sure no residue from the eraser or
cotton swab is left on the contact points.
Cycle each battery through a full charge and full discharge on a
regular basis, preferably monthly. Even if you use external power
most of the time, you will lengthen battery life by occasionally
cycling through a full discharge/recharge cycle.
Do not leave a battery unused and fully charged for an extended
period. Batteries that sit idle eventually lose their ability to hold a
charge.
Store batteries in a cool, dry location, away from metal objects and
corrosive gases. To extend battery life during long-term battery
storage, store the batteries with a 50% charge level. Storage limits
are –20 °C to 60 °C 80% RH.
Extended exposure to high humidity or temperatures above 45
degrees Celsius (113 degrees Fahrenheit) can impair battery
performance and shorten battery life.
Allow a battery to warm to room temperature before charging it.
Temperature shock can damage the battery chemistry and in some
cases cause a short circuit.
Always charge batteries at temperatures between 0 and 45 degrees
Celsius (32 to 113 degrees Fahrenheit).
Operate the analyzer on battery power between the temperatures of
0 and 50 degrees Celsius (32 to 122 degrees Fahrenheit). Using the
batteries at lower or higher temperatures can damage the batteries
and reduce operating life. Cold temperatures affect battery
chemistry, reducing charge capacity, especially below 0 degrees
Celsius (32 degrees Fahrenheit).
Batteries are shipped with a minimum of 20% charge capacity to
provide at least a 6-month shelf life at room temperature, before the