Cca

Battery Rating Method

Use the following table to more accurately determine the time it will take to fully charge a battery that is initially at 50% State-of-Charge. Identify you r battery type and its associated Charge Time in the table. Common battery types are:

•Small batteries, motorcycles, garden tractors, etc., are usually rated in Amp-Hours

(AH).

•Car and truck batteries, usually rated in Reserve Capacity (RC), Cold-Cranking Amps

(CCA).

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

	Charge Time Table for Batteries at 50% State-of-Charge
Battery			Battery		Rating			Charge-Time	(Hours)
Type		AH		RC	CCA		2 AMP	10 AMP	60 AMP
Motorcycle		6 - 12					2 - 4	NA	NA
and Tractor		12 - 32					4 - 10	NA	NA
Car and			40	- 60	200	- 315	8- 11	1 - 2	NA
Truck			60	- 85	315	- 550	11 - 16	2 - 3	NA
			85	-190	550-	1000	16-35	3-7	NA
Marine	and	40	80				15	3	NA
Deep Cycle		80	140				26	5	NA
		95	160				30	6	NA
		105	180				33	7	NA
NA = Not Allowed. DO NOT charge at this setting.
Voltmeter	Method

To find the time needed to fully charge your battery, determine the battery'scharge level with a voltmeter or electronic State-of-Charger Tester. Use the table below to convert Voltmeter and State-of-Charge readings at room temperature to the appropriate Charge Factor. Then use the formulas that follow the table to determine the approximate charge time.

	Charge	Factor Table
		State-of.Charge
12 Volt Battery	6 Volt Battery	Reading
12.67	6.34	100%	0
12.45	6.22	75%	0.25
12.25	6.12	50%	0.50
12.06	6.03	25%	0.75
11.86	5.93	O%	1

(CCA).

12.67

100%

12.45

75%

12.25

50%

12.06

25%

11.86