OPTIMA ® Yellow Top 2.7SJ


Battery Model: YT S 2.7J

Part Number: 8070-176

Norminal Voltage: 12 Volts

Description: High Power, dual purpose engine start and deep cycle, sealed lead acid battery

Warranty: 1 Year Manufacturers

Physical Characteristics:

Plate Design: High purity Lead-tin Alloy. Wound cell configuration ultilsing proprietary SPIRALCELL technology.

Electrolyte: Sulfuric Acid, H2SO4

Case: Polypropylene

Colour: Case: Light Grey

              Cover: OPTIMA Yellow

Group Size: BCI:51

Length 9.313 Inch 237 mm
Width: 5.063 Inch 129 mm
Height: 8.938 Inch 227 mm (Height to top of terminals)
Weight: 26.00lb 11.6KG


Terminal Configuration: Japanese Terminals (Thin T1)


Performance Data:

Open Circuit Voltage (fully charged): 13.1 Volts

Internal Resistance (fully charged): 0.0046 ohms

Capacity: 38 Ah (C/20)

Reserve Capacity: BCI: 70 Minutes

(25 amp discharge, 80F to 10.5 volts cut-off)



CCA (EN-18⁰C): 460 amps

MCA (BCI 0⁰C): 625 amps


Recommended Charging:
The following charging methods are recommended to ensure a long battery life:
(Always use a voltage regulated charger with voltage limits set as described below.)
Model: YT S 2,7 & YT R 2,7
These batteries are designed for engine starting and deep cycling applications and for use in vehicles with large accessory loads.

Recommended Charging Information:

Alternator: 13.65 to 15.0 volts
Battery Charger (Constant Voltage): 13.8 to 15.0 volts; 10 amps maximum; 6-12 hours approximate
Float Charge: 13.2 to 13.8 volts; 1 amp maximum (indefinite time at lower voltages)
Rapid Recharge: (Constant voltage charger) Maximum voltage 15.6 volts. No current limit as long as battery temperature remains below 125°F (51.7°C). Charge until current drops below 1 amp.
Cyclic or Series String Applications: 14.7 volts. No current limit as long as battery temperature remains below 50°C (125°F). When current falls below 1 amp, finish with 2 amp constant current for 1 hour.
All limits must be strictly adhered to.

Recharge Time: (example assuming 100% discharge 10.5 volts)

Current Approx. time to 90% charge
100 amps
50 amps
25 amps
25 minutes
65 minutes
130 minutes

Recharge time will vary according to temperature and charger characteristics. When using Constant Voltage chargers, amperage will taper down as the battery becomes recharged. When amperage drops below 1 amp, the battery will be close to a full state charge.

(All charge recommendations assume an average room temperature of 25°C, 77°F)

Always wear safety glasses when working with batteries.

Always use a voltage regulated battery charger with limits set to the above ratings. Overcharging can cause the safety valves to open and battery gases to escape, causing premature end of life. These gases are flammable! You cannot replace water in sealed batteries that have been overcharged. Any battery that becomes very hot while charging should be disconnected immediately.

Not fully charging a battery can result in poor performance and a reduction in capacity.

Shipping and Transportation Information:

OPTIMA batteries can be shipped by AIR. The battery is nonspillable and is tested according to ICAO Technical Instructions DOC. 9284-AN/905 to meet the requirements of Packing Instructions No. 806 and is classified as non-regulated by IATA Special Provision A-48 and A-67 for UN2800. Terminals must be protected from short circuit.

YTS 2.7J - 8070-176
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