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Battery Notices
The MS840 is equipped with a Lithium-Ion battery. The battery will discharge after an extended
period of no use.
When the battery is discharged, recharge the unit for some 4.5 hours in order to fully charge
the battery.
Note: To guarantee optimal performance, it is advised that rechargeable batteries be replaced
every year, or when 500 charge/discharge cycles are achieved. 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, of a Lithium-Ion battery, decrease is greater than 20% in, 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 lasts depends on the battery type and how the device is used.
Conserve the battery life by doing the following:
Avoid frequent full discharges because this places additional strain on the battery. Several
partial discharges with frequent recharges are better than a full discharge. Recharging a
partially charged lithium-Ion battery does not cause harm because there is no memory
effect.
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 half of the
one with frequent recharges.
Battery charge notice
It is important to consider the environment temperature when 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 0°C to 40°C.
Charging batteries outside of the specified range could damage the batteries and shorten their
charging life cycle.
CAUTION! Do not charge batteries at a temperature lower than 0°C. This 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 the charged Lithium-Ion battery 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 battery may be stored at temperatures between -30°C to
70°C, however they may deplete more rapidly at higher temperatures. It is recommended to
store batteries at room temperature.
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