Schumacher TB4 - Manual (Page 7)

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5. BATTERY REPLACEMENT
To replace the battery, refer to the original vehicle owner’s manual
for instructions on how to properly remove and install the battery
in your vehicle. Examine the battery for excessive wear, cracks,
bulging or damage each time you charge the battery. If damage
is detected, do not charge the battery; replace it immediately. If
the battery is hot, allow it to cool before charging.
Be sure to check that the battery’s connector plug is correctly
connected to the vehicle.
The vehicle is ready for use.
NOTE: The old battery must be disposed of properly (see Battery
Disposal section).
6. BATTERY CARE AND STORAGE
6.1 If a leak develops, avoid contact with the leaking acid and place
the battery in a plastic bag prior to disposal. Refer to the disposal
instructions in this manual.
6.2 If you will not be using the vehicle for an extended period of time,
unplug the battery from the main wiring harness of the vehicle.
6.3 Do not allow the battery to become completely run down/
discharged before charging.
NOTE: This is a lead-acid battery and does not retain a memory like
a NiCad battery. Therefore you do not need to completely discharge
the battery before you recharge it. In fact completely discharging the
battery will cause poor performance and premature failure.
6.4 Charge the battery before storing the vehicle. Storing the battery
in a discharged state will permanently damage the battery.
6.5 Charge the battery at least once a month, even if the vehicle is not
being used.
6.6 Always disconnect and remove the battery from the vehicle before
storing. Battery leakage and corrosion can damage the vehicle
and battery connectors.
6.7 Do not store the battery in temperatures above 75° F (24° C)
or below -10° F (-23.3° C). Batteries that have less than a 40%
State-of-Charge will freeze at 0° F (-17.8° C) and fully discharged
batteries will freeze at approximately 20° F (-6.7° C).