User`s guide

MP-70/50 Scoreboard Controller User’s Guide
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• NiMH batteries tend to perform better and last longer if allowed to
completely recharge to the “BATTERY VERY LOW” warning before
recharging.
• Set the ON/OFF power switch located on the control’s back panel to
the OFF position during the charging process. Battery controls will not
charge properly if the power switch is in the ON position.
• Fully charge the battery control once before using it for the first time,
or when it is brought out of extended off-season storage.
• Do not leave the battery control plugged into the charger for more
than 20 hours at a time. Overcharging may damage the battery and
shorten its life. Damage to the control or charger may also result.
• Charge the battery control in a dry location with an ambient tempera-
ture between +32°F and +104° F (0° C to +40° C). To prevent possible
damage to the charger, the control and/or battery pack, never charge
a control in temperatures exceeding +104° F (+ 40° C). Extreme hot or
cold temperatures will affect the battery’s ability to charge or operate
correctly, so allow the battery to warm up or cool down as necessary
before charging or using. Optimal battery life is achieved when used
or charged at temperatures between +68°F and +86° F (+20°C and
+30°C).
• Turn the battery control off after every use. Failure to do so may drain
the battery to a critically low voltage, in which case the control will not
function and the battery may be weakened or damaged. To keep this
from happening, check the gas gauge indicator frequently and keep
the battery sufficiently charged.
• If the battery voltage is allowed to become critically low, or if the bat-
tery is overcharged, the gas gauge memory could be affected and the
charge level indicator may not accurately reflect the remaining battery
charge. This could also disrupt normal data communication between
the battery and the control. If you believe the indication is inaccurate,
try discharging and recharging the control three or four times to
retrain the gas gauge memory. If the indicator still fails to work prop
-
erly, we recommend that you replace the battery pack.
• Though the battery can be charged and discharged hundreds of times,
it will eventually wear out. Battery pack replacement is recommended
when the operating time between charges becomes noticeably shorter
than usual.