Sears 200.71206 Calculating Charge Time, Hydrometer or Electronic Method, Chart Method

CALCULATING CHARGE TIME

The Chart Method

Use the following table to more accu- rately determine the time it will take to bring a battery to full charge.

First, identify where your battery fits into the chart.

•Small batteries — motorcycles, garden tractors, etc. — are usually rated in Ampere Hours (AH). For example; 6 to 12 AH, or 12 to 32 AH.

•Batteries in cars and smaller trucks are usually rated in Reserve Capac- ity (RC), Cold-Cranking Amps (CCA), or both.

•Marine, or deep-cycle batteries are usually rated in Reserve Capacity (RC).

•NR means that the charger setting is

NOT RECOMMENED.

Find your battery’s rating on the chart below and note the charge time given for each charger setting.

The times given are for batteries with a 50-percent charge prior to recharging. Add more time for severely discharged batteries.

SAFETY

OPERATION

BATTERY SIZE/RATING					CHARGE RATE/CHARGING TIME - HOURS
					2 AMP		6 AMP
SMALL	Motorcycle, garden		6	- 12 AH	2	- 4	NR
BATTERIES	tractor, etc.		12	- 32 AH	4 - 10		NR
CAR/TRUCKS	200	- 315 CCA	40	- 60 RC	11	- 14	4 - 5
	315	- 550 CCA	60	- 85 RC	14	- 18	5 - 6
	550	- 1000 CCA	85	-190 RC	18	- 35	6 - 12
MARINE/DEEP CYCLE				80 RC	18		6
			140 RC		27		9
			160 RC		30		10
			180 RC		33		11

The Hydrometer or Electronic Method

To find the time needed to fully charge your battery, determine the battery’s charge level with a hydrometeror electronic Percent-of-Charge Tester. The following table will help you convert hydrometer readings to percent of charge values.

SPECIFIC	PERCENT	PERCENT OF
GRAVITY	OF CHARGE	CHARGE NEEDED
1.265	100%	0%
1.225	75%	25%
1.155	25%	75%
1.120	0%	100%

Continued...

MAINTENANCE TROUBLESHOOTING

PARTS

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