Schumacher SF-200-30 owner manual Engine Start, Charge Period, Battery Charging

I. ENGINE START

1.With the charger unplugged from the AC outlet, connect the charger to the battery following instructions given in section F.

2.Plug the charger AC power cord into the AC outlet, then set selector switch to the 12 volt Engine Start position.

3.Crank the engine by turning the ignition key of the vehicle. Follow the duty cycle printed on the front panel of your charger for proper ON / OFF times. During extremely cold weather or when the battery is severely exhausted, charge the battery for about 5 minutes before cranking the engine.

4.If the engine fails to start, charge the battery for 5 more min- utes before attempting to crank the engine again.

5.After the engine starts, move the charge rate switch to the off position and then unplug the AC power cord from the outlet before disconnecting the output clips from the battery.

Do not try to engine start a vehicle without a battery in it. You may damage the vehicle’s system. If the engine spins, but doesn’t start after several starting attempts, there is a problem with the engine of the vehicle other than its starting system. STOP crank- ing the engine until the other problem has been found and corrected.

J. CHARGE PERIOD

Determine the charge level of your battery with a hydrometer or electronic percent of charge tester. Determine the ampere hour rating of your battery. It may be on the battery information label. If the battery is rated in Reserve Capacity, convert to ampere hour rating using the following formula:

Ampere Hour rating = (Reserve Capacity) + 16	Example: AH rating = (168 Reserve Capacity) + 16	or AH = 100
(2)	(2)
Reserve Capacity is in minutes.

Use the following formula to determine the time of charge required: (AH x % of charge needed) divided by amp setting of the charger, times

1.25 = hours of charge:	Example: State of charge of the battery is 50%
	Percent of charge needed is 100% - 50% = 50% (.50 decimal)
	Ampere rating of the battery is 100AH
	Charger setting is			10 amps
100 x .50	=	x 1.25	=	6.25 hours of charge needed
10		+ 1.00	hour more if charging a deep cycle battery
		7.25	hours total for a deep cycle battery.

A hydrometer reading of the specific gravity of the electrolyte (fluid) of the battery in good condition should be between 1.25 and 1.28.

When a battery reaches 80-85% of full charge, bubbles will appear on the surface of the fluid. As the battery nears full charge, bubbling will become more vigorous.

K. BATTERY CHARGING

1.Before charging any battery, make sure the electrolyte (bat- tery liquid) in each cell is at correct level.

2.Set all switches and timers to the OFF position.

3.If the battery is being charged inside the vehicle, use con- nection procedures outlined in Section F. Should the battery be removed from the vehicle, follow the instruction in Sec- tion G. Now plug the charger into the AC outlet.

4.Set the charge rate switch to the desired charge position. See charge rate chart.

NOTE: These battery chargers are MANUAL type chargers and MUST have the charging monitored regularly. The battery can overcharge if the charging is not stopped when the battery is charged.

BATTERY SIZE/RATING			CHARGE RATE*/CHARGING TIME - HOURS**
			2 AMP	10 AMP	30 AMP	40 AMP	60 AMP
SMALL	Motorcycle, Garden	6 - 12 AH	3-6	NR	NR	NR	NR
BATTERIES	Tractor, etc.	12 - 32 AH	3 - 18
	200 - 315 CCA	40 - 60 RC	13 - 20	2 ½ - 4	½ - 1	½ - ¾	NR
CAR/TRUCKS	315 - 550 CCA	60 - 85 RC	20 - 35	4 - 7	1 - 2	¾ - 2	½ - 1
	550 - 875 CCA	85 - 125 RC	35 - 55	7-11	2 - 7	2 - 3	1 - 2
		55 MC	34	7	NR	NR	NR
MARINE/		80 MC	50	10	NR	NR	NR
DEEP CYCLE
		105 MC	66	13	NR	NR	NR

*Charge Rates for this model are listed on the front panel.

**Based on battery at 50% charge.

AH	Ampere Hours
NR	Not Recommended
CCA	Cold Cranking Amps
RC	Reserve Capacity
MC	Marine Capacity

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