TSI Instruments SidePak AM520, User Manual, Page: 26 / 98

10 Chapter 2
TSI
®
recommends fully charging the battery before first use of a new
instrument. The battery can be charged when not installed in the
instrument. Accordingly, a second battery (purchased as an
accessory) can be charged on its own using the AC adapter supplied
with the AM520/AM520i, while the equipment is in use with another
battery. TSI
®
also recommends recharging the battery after each use.
The SBMS system requires a few charge/discharge cycles to learn
the capacity of a new pack. (It should be close to capacity when you
first receive the battery.)
The SBMS system will learn the battery pack capacity more quickly if
the pack is fully charged and then fully discharged multiple times.
To maintain the greatest accuracy of the SBMS gas gauge, you
should periodically fully discharge then fully charge the battery (once
every few months).
Storing the Battery Pack between Uses
The rechargeable battery must not be allowed to sit in a fully
discharged state for long periods of time to prevent damage to the
instrument. The battery pack should be charged before storage and
recharged every six (6) months when not being used.
The rechargeable battery will last longer if it is stored in a cool place.
Hot temperatures over long periods of time (several months) will
increase cell internal self-discharge and eventually degrade the
battery capacity.