DR
®
WHISPER LITE
®
CORDLESS Electric Mower Safety & Operating Instructions
9
Recharging After Each Use of the Mower
IMPORTANT!
Always recharge the mower to a full charge immediately after each use, no
matter how short a time it was used, even if the battery power indicator on the control panel
is still green.
(Green means only 30% or more of the battery power is remaining.) This is
important in order to maintain maximum mower performance and extend maximum battery pack
life. If the mower is stored with a depleted battery pack, the batteries will become permanently
damaged within a short time.
Recharging to a Full Charge for Off-Season Storage
1.
Always recharge the mower to a full charge before putting it away for off-season storage. After
giving the batteries a full charge (at least 12 hours of charging) you may leave the mower in
storage for the entire off-season (up to 6 or 7 months) without adverse effect on the battery pack,
provided the storage temperature is within the acceptable range (see below). The battery pack
used in your DR
®
WHISPER LITE CORDLESS Electric Mower has much less self-discharging
during storage than conventional lead acid batteries. Also remember to give the battery pack a
full charge before first using the mower next season.
2.
Owners of cordless electric mowers often ask if they may leave the charger on for weeks or
months at a time, or even during the entire off-season of more than six months. The answer is
that while leaving the charger on for several weeks will not damage the mower, leaving it on for
an entire off-season is not as good for the battery pack life as periodic recharging. The
manufacturer of the DR
®
WHISPER LITE CORDLESS Electric Mower's battery pack therefore
makes the following recommendation:
The method most likely to contribute to a long battery life is to recharge for up to 12
hours about once every three or four months during off-season storage.
3.
Storage temperature range.
It is important for good battery performance that the mower is
always stored in an environment between
–4
°
F (–20
°
C) and +104
°
F (+40
°
C)
. Make sure the
storage temperatures will never be outside these limits. The lower the storage temperature is
within the specified range the better, since the self-discharge is slower at low temperatures.
4.
We do not recommend removing the battery pack from the mower during storage.
5.
See page 21 for more storage information.
Battery Disposal
Please dispose of used batteries responsibly, according to your local hazardous
materials regulations.
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