90S Quattro (Canada) V6-2.8L (AAH) (1993)
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Battery: Service and Repair
Battery, Charging
WARNING!
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Gases given off during charging are explosive. DO NOT smoke in rooms containing a charging battery, or have bare light bulbs or any
other source of sparks or flame.
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Battery charger MUST be turned off when connecting or disconnecting cables on battery
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"Boosting" a sulfated battery at a high charging rate can cause an explosion!
Tools required
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Battery charger: Christie automotive model 400 QDD or equivalent
NOTES:
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Always follow the battery charger manufacturer's instructions.
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Before testing a battery after charging, load the battery with 15 amps for 1 minute to remove the surface charge.
Charging batteries with removable caps
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Remove cell caps while charging.
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If water is added, fast-charge battery for a few minutes after battery begins gassing (boiling).
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Slow-charging rate should be approximately 10% of battery amp-hour capacity (example: for a 45 amp-hour battery', slow-charging current
should be about 4.5 amp).
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Fast-charging rate should be approx. 80-90% of battery amp-hour capacity.
CAUTION!
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Batteries may be damaged by fast-charging. It should be used only as a last alternative, when slow charging is not possible.
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DO NOT allow battery charging voltage to exceed 17 volts.
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If the battery begins gassing (boiling) violently while being charged, REDUCE the charging rate.
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Never disconnect the battery while the engine is running.
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Charge batteries with removable caps according to following table:
Specific gravity
Fast charge up to:
1.150 or below
1 hour
1.150 to 1.175
3/4 hour
1.175 to 1.200
1/2 hour
1.200 to 1.225
1/4 hour
Above 1.225
Slow-charge ONLY to 1.250-1.280
Charging sealed batteries
Tools required
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Sun Model VAT-40, Bear Model 42-210, Christie Automotive Model 400 QDD, or equivalent
CAUTION!
Sealed batteries should be slow-charged only.
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Sealed batteries, often called "maintenance-free" batteries, will not accept a high rate of charge. It may be necessary to charge them for up to twice
as long as batteries with removable caps.
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Battery voltage will NOT increase as rapidly as for batteries with removable caps.
