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Copyright 2012 unitech Electronics Co., Ltd. All rights reserved. Unitech is a registered trademark of unitech Electronics Co., Ltd.
The Backup Battery will receive power from an external power source, or through the main
battery (But, only if the main battery has adequate power). In order to prevent data loss due to
Backup Battery failure, connect the RH768 to the main Battery Pack or an external power
source.
NOTE: Turn the RH768 Backup Battery Switch to the ON position before initial use.
Rechargeable batteries are advised to replace every year or when 500 charge/discharge
cycles achieved to guarantee optimal performance. It is normal that the battery balloons or
expands beyond one year or the maximum of 500 cycles.Although it does not cause harm, it
cannot be used again and must be disposed of according to the location's safe battery disposal
procedures.
If the performance decrease of greater than 20% in a Lithium-Ion battery, the battery is at the
end of its life cycle. Do not continue to use, and ensure the battery is disposed of properly.The
length of time that a battery power lasts depends on the battery type and how the device is
used. Conserve the battery life through the following:
Avoid frequent full discharges because this places additional strain on the battery. Several
partial discharges with frequent recharges are better than a deep one. Recharging a
partially charged lithium-Ion battery does not cause harm because there is no memory.
Keep the lithium-Ion battery cool. Avoid a hot car. For prolonged storage, keep the battery
at a 40% charge level.
Do not leave the lithium-Ion battery discharged and unused for an extended period
because the battery will wear out and the longevity of the battery will be at least shorter
than half of the one with frequent recharges.
Battery charge notice
It is important to consider the environment temperature whenever the Lithium-Ion battery pack
is charged. Charging is most efficient at normal room temperature or in a slightly cooler
environment. It is essential that batteries are charged within the stated range of 32º F - 104ºF
(0°C - 40°C). Charging batteries outside of the specified range could dam-age the batteries
and shorten their charging life cycle.
CAUTION! Do not charge batteries at a temperature lower than 0°C, which will increase the
internal resistance to cause heat and make the batteries unstable and unsafe.
Please use a battery temperature detecting device for a charger to ensure a safe
charging temperature range.
Storage and safety notice
Although charged Lithium-Ion batteries may be left unused for several months, their capacity
may be depleted due to build up of internal resistance. If this happens they will require
recharging prior to use. Lithium-Ion batteries may be stored at temperatures between -4Fº -
140Fº (-20°C to 60°C); however, they may deplete more rapidly at the higher temperature
ranges. It is recommended to store batteries within normal room temperature ranges.