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Optima Battery Specifications

Useful Optima Battery Links:
Optima Performance Batteries
Truck Battery Selector
Optima 4x4 Battery
Optima D34/78 Deep Cycle Starting Battery

More about the Optima RedTop Battery

More about the Optima YellowTop Battery

OPTIMA REDTOP STARTING BATTERIES
MODEL NUMBER	34 & 34R	75/25	34/78	78	25 & 35	6V
PERFORMANCE
Voltage	12v	12v	12v	12v	12v	6v
Cold Cranking Amps @ 0F	800	720	800	800	720	800
Cranking Amps @ 32F	1000	910	1000	1000	910	1000
Reserve Capacity	100	90	100	100	90	100
Capacity (C/20 Rate)	50	44	50	50	44	50
Internal Resistance (ohms)	0.003	0.003	0.003	0.003	0.003	0.0019
PHYSICAL SPECS
Length	10"	9 5/16"	10"	10"	9 5/16"	10"
Width	6 7/8"	6 13/16"	6 7/8"	7 1/4"	6 13/16"	3 9/16"
Height	7 13/16"	7 5/8"	7 13/16"	7 3/16"	7 5/8"	8 1/8"
Minimum Weight (lbs)	37.9	33.1	38.8	39.5	31.7	18.4
Type Post/Terminal	SAE Post	Dual SAE & GM	Dual SAE & GM	Side Terminal	SAE Post	SAE Post
BCI Group	34 & 34R	75/35	34/78	78	25 & 35	N/A

OPTIMA YELLOWTOP DUAL PURPOSE (STARTING & DEEP CYCLE) BATTERIES
MODEL NUMBER	D34/78	D75/25	D34	D35	D51 & D51R
PERFORMANCE
Voltage	12v	12v	12v	12v	12v
Cold Cranking Amps @ 0F	750	620	750	620	450
Cranking Amps @ 32F	870	770	870	770	575
Reserve Capacity	120	100	120	100	66
Capacity (C/20 Rate)	55	48	55	48	38
Internal Resistance (ohms)	0.0028	0.003	0.0028	0.003	0.0046
PHYSICAL SPECS
Length	10"	9 5/16"	10"	9 5/16"	9 5/16"
Width	6 7/8"	6 13/16"	6 7/8"	6 13/16"	5 1/16"
Height	7 13/16"	7 5/8"	7 13/16"	7 5/8"	8 15/16"
Minimum Weight (lbs)	43.5	37.8	42.9	36.4	26
Type Post/Terminal	Dual SAE & GM	Dual SAE & GM	SAE Post	SAE Post	SAE Post
BCI Group	34/78	75/25	34	35	51 & 51R

OPTIMA BLUETOP STARTING AND DUAL PURPOSE BATTERIES
MODEL NUMBER	D27M	34M	D34M	D31M
PERFORMANCE
Voltage	12v	12v	12v	12v
Cold Cranking Amps @ 0 F	800	800	750	900
Cranking Amps @ 32 F	1000	1000	870	1125
Reserve Capacity	140	100	120	155
Capacity (C/20 rate)	66	50	55	75
Internal Resistance (ohms)	0.0025	0.003	0.0028	0.0025
PHYSICAL SPECS
Length	12 3/16"	10"	10"	12 13/16"
Width	6 13/16"	6 7/8"	6 7/8"	6 1/2"
Height	8 3/4"	7 13/16"	7 13/16"	9 3/8"
Minimum Weight (lbs)	53.8	38.4	43.5	59.8
Post Type	Dual SAE & 5/16 Stainless Stud	Dual SAE &	Dual SAE &	Dual SAE &
BCI Group	27	5/16" Stainless Stud	5/16" Stainless Stud	5/16" Stainless Stud

Battery Links:

Optima Performance Batteries
Truck Battery Selector
Optima 4x4 Battery
Optima D34/78 Deep Cycle Starting Battery

Kilby Dual Battery Tray
The Kilby Dual Battery Tray allows for secure installation of two 34 and 34/78 series Optima Batteries to provide more power

Optima RedTop Battery - Optima YellowTop
Spiracell Technology Batteries for Demanding systems.