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(About Lithium ion batteries)
Batteries may swell as the they deteriorate. This is the lithium battery character, and there is no matter
on safety if they are used properly.
When recharging, please observe the following points to avoid the battery lifetime shortening.
・ We recommend you recharge batteries after the remaining battery charge get low.
・ Battery lifetime may shorten by repeating the battery recharging frequently before the remaining
battery charge get low.
・ When a fully-charged battery discharges immediately, it is a sign of a life-exhausted battery.
Please purchase a new battery.
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