OPTIMA Technical Specs BlueTop

Product catalog summary

Technical Specifications Overview

Model Types: The OPTIMA BlueTop batteries are categorized into Starting (BT SLI 4.2) and Dual Purpose (BT DC 4.2, BT DC 5.0, BT DC 5.5) models.

Performance Specifications:

Voltage: All models operate at 12 volts.
Cold Cranking Amps (CCA) at -18°C: Ranges from 765 to 975 depending on the model.
Cranking Amps at 0°C: Ranges from 870 to 1125.
Reserve Capacity: Varies from 100 to 155 minutes.
Capacity (C/20 rate): Ranges from 50 Ah to 75 Ah.
Internal Resistance: Between 0.0025 to 0.003 ohms.

Physical Specifications:

Dimensions: Length varies from 254 mm to 325 mm, Width from 165 mm to 175 mm, and Height from 200 mm to 238 mm.
Weight: Ranges from 17.4 kg to 26.5 kg.
Post Type: Dual SAE & GM with 5/16 Stainless Stud.
BCI Group: Includes groups 34, 27, and 31.

Charging Information:

BT SLI 4.2: Designed for engine starting, not suitable for deep cycle applications. Recommended alternator voltage is 13.3 to 15.0 volts with no amperage limit. Battery charger voltage should be 13.8 to 15.0 volts with a maximum of 10 amps.
BT DC Models: Suitable for both engine starting and deep cycling. Alternator voltage should be 13.65 to 15.0 volts. Cyclic applications require 14.7 volts with no current limit, provided the temperature remains below 50°C.
Rapid Recharge: Maximum voltage is 15.6 volts, with no current limit as long as the temperature is below 50°C.
Float Charge: 13.2 to 13.8 volts with a maximum of 1 amp current.

Safety Information:

Always wear safety glasses when handling batteries.
Use a voltage-regulated charger to prevent overcharging, which can lead to gas escape and potential battery failure.
Disconnect any battery that becomes excessively hot or emits a hissing sound during charging.

Catalog excerpts

OPTIMA® BlueTop Technical Specs STARTING AND DUAL PURPOSE MODEL NUMBER PERFORMANCE Voltage Cold Cranking Amps @ -18° C Cranking Amps @ 0° C Reserve Capacity Minutes Capacity (C/20 rate) (Ah) Internal Resistance (ohms) PHYSICAL SPECS Length (mm) Width (mm) Height (mm) Minimum Weight (kg) Post Type BT SLI 4.2 BT DC 4.2 BT DC 5.0 BT DC 5.5 12 12 12 12 815 765 845 975 1000 870 1000 1125 100 120 140 155 50 55 66 75 0,003 0,0028 0,0025 0,0025 309 172 221 22,7 325 165 238 26,5 Dual SAE & GM Dual SAE & GM 5/16 Stainless Stud 5/16 Stainless Stud 27 31 254 254 175 175 200 200 17,4 19,7 Dual Dual SAE & SAE & GM GM 5/16 5/16 Stainless Stainless Stud Stud 5/16 5/16 Stainless Stainless Stud Stud BCI Group 34 34 *Requires purchase of two BT DC 4,2 batteries Charging Info The following charging methods are recommended to insure a long battery life (Always use a voltage regulated charger, with voltage limits set as described below): BlueTop Type: BT SLI 4,2 These batteries are designed for engine starting applications. They are NOT recommended or warranted for use in deep cycle applications. Recommended charging information: Alternator: 13.3 to 15.0 volts, no amperage limit.

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Battery charger: 13.8 to 15.0 volts, 10 amps maximum, 6-12 hours approximate. Rapid Recharge: Maximum voltage 15.6 volts (regulated). Maximum current: No limit as long as temperature <50° (125° C F). Maximum recharge time: Charge until current drops below 1 amp. Float charge: 13.2 to 13.8 volts, 1 amp maximum current, time indefinite (at lower voltage). All limits must be strictly adhered to. Blue Top Type: BT DC 4,2 / BT DC 5,5 These batteries are dual purpose. They are designed for engine starting and deep cycling applications and for use in boats with large accessory loads. Recommended charging...

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