OPTIMA® BlueTop SLI 4,2 Battery Model: BT SLI 4,2 Part Number: 806 252 000 888 2 Nominal Voltage: 12 volts NSN: 6140-01-475-9416 Description: High power, sealed lead acid, marine starting battery Physical Characteristics: Plate Design: Electrolyte: Case: Color: Group Size: Length: Width: Height: Weight: High purity lead-tin alloy. Wound cell configuration utilizing proprietary SPIRALCELL® technology. Sulfuric acid, H2SO4 Polypropylene Case: Dark Gray Cover: “OPTIMA“ Blue BCI: 34 Standard 10” 6.875” 7.813” 38.4 lb. Metric 254 mm 175 mm 200 mm (height at the top of the terminals) 17.4 kg Terminal Configuration: SAE / BCI automotive and threaded stainless steel stud 5/16 – 18 UNC. Performance Data: Open Circuit Voltage (fully charged): Internal Resistance (fully charged): Capacity: Reserve Capacity: 12.8 volts 0.0030 ohms 50 Ah (C/20) BCI: 100 minutes (25 amp discharge, 80°F (26.7°C), to 10.5 volts cut-off) 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: BT SLI 4,2 These batteries are designed for engine starting applications. They are not recommended or warranted for use in deep cycle applications.

OPTIMA® BlueTop SLI 4,2 Recommended Charging Information: Alternator: Battery Charger: (Constant Voltage) Float Charge: Rapid Recharge: (Constant voltage charger) 13.3 to 15.0 volts 13.8 to 15.0 volts; 10 amps maximum; 6-12 hours approximate 13.2 to 13.8 volts; 1 amp maximum current (indefinite time at lower voltages) Maximum voltage 15.6 volts. No current limit as long as battery temperature remains below 50°C (125°F). Charge until current drops below 1 amp. All limits must be strictly adhered to. Recharge Time: (example assuming 100% discharge – 10.5 volts) Current Approx. time to 90% charge...