300SE (140.032) L6-3.2L (104.990) (1992)
Battery: Service and Repair
Notes on Battery
CAUTION:
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Do not store lead-acid batteries for extended periods of time in a place where they are exposed to direct sunlight.
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Always store lead-acid batteries horizontally to prevent acid from escaping; do not tilt them when they are being transported.
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Discharged or faulty lead-acid batteries can freeze up; therefore, ensure that they are stored at temperatures above freezing level.
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Do not place any tools or other electrically conductive objects on a lead-acid battery (risk of short-circuit!).
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Avoid mixing up positive and negative poles and avoid short-circuits.
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Before removing or installing a lead-acid battery, switch off all electrical consumers where possible, and switch off the engine, so as to
minimize the possibility of creating sparks.
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Always disconnect the negative pole first; always connect the positive pole first.
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Do not switch on battery chargers until they have been connected to the battery poles; switch them off before disconnecting.
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Only charge lead-acid batteries with direct current. For the charging current we recommend 10% of capacity for normal charging and
50% of capacity for rapid charging.
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During rapid charging it must be insured that the casing of the lead-acid battery does not warm up excessively (< 55 °C).
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Lead-acid batteries should be kept clean and dry as far as possible.
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It is advisable to grease the poles lightly with battery pole grease.
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Lead-acid batteries should not be stored for extended periods without being recharged.
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If a lead-acid battery is to remain in a vehicle which is not in use for an extended period, the negative terminal clamp should be
disconnected.