Yamaha PW-SE Original Instructions Manual page 32

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TIP
For example, even if normal charging is started, if the battery temperature or the surrounding tem-
perature is too high or too low, the charging may be extended or charging may be stopped without
the battery being charged sufficiently in order to protect the battery.
Charging
start
Charging Charging time*
standby (Not including standby time)
Charging time guidelines
Although charging time varies depending on residual bat-
Charging
finish
tery capacity and external temperature, if the battery has
been exhausted, it generally takes approximately 3.5
hours (Down tube type 400 Wh), 4 hours (Down tube type
500 Wh) or 5 hours (Multi location type 600 Wh).
If the battery pack enters standby mode while charging,
charging time will increase by an equal amount.
* If charging after a long period of disuse, the charging
time will be lengthened depending on the battery status.
However, note that if the battery capacity indicator lamps
do not flash in fault pattern (See "Reading the charging
status for battery pack"), there is no malfunction.
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