overview

Optima Blue Top D31M - 12 Volt - 75Ah - 900CCA

Marine Spiral Cell AGM Dual Purpose Battery (D31M)

Vibration is the killer of all batteries. Not so with Optima Blue Top Batteries. Whether your pounding through the waves heading to the reef or down the creek luring with the Minnkota or maybe even skiing one of Australia’s many rivers or lakes. Optima Blue Top patented spiral cell technology enables the Optima Marine series of batteries to withstand vibration most batteries would crumble under.

Perfect for either starting or cranking batteries but also a great choice for an auxiliary battery as well. Optima blue top AGM batteries range from 750cca to 900cca with many different terminal configurations and sizes to suit any location. You can even mount them upside down or on there side and they are guaranteed to be leak proof. They are terminal corrosion free and gas free and will not gas under charge ever. Many batteries when left unused can sulphate up in less than 6 months which can lead to battery failure. Optima blue top batteries can maintain there charge for up to 12months providing there is no current draw. So its ready to go for the next season without even needing charging.

Want more proof of the superior quality of Optima  Batteries? Emergency services such as the Water Police and Naval departments choose Optima to power there marine vessels.

This is Optima’s marine range but they are also suited as cranking and auxiliary batteries for any application whether it be a caravan or camper or for your 4x4 blue top power is not just for the water but every application.

Where do you start. Optima's patented spiral cell technology means they are up to 20% more efficient than leading brand batteries. Generating high cranking amps and extra starting power for demanding inboard and outboard motors.

Optima D31M is guaranteed leak proof and can be mounted almost anywhere it will fit upside down or even on its side. They are also a sealed battery so are gas free making them perfect for tight fits and the terminals wont corrode up like normal batteries.

If you are upgrading your existing Optima Battery your Optima D31M is the same as 8052-161, 9052-161, 27931, D31M-1125, BLUED31M, 27551, SC31DM, or N99D31MBLUE.

• 12 Volts 75 Amps
• CCA 900amps

specification

Dimensions:

• Length: 325.4mm
• Width: 165.1mm
• Height: 238.1mm (to top of terminals)
• Weight: 27.2Kg

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 125°F (51.7°C). When current falls below 1 amp, finish with 3 amp constant current for 1 hour.
• All limits must be strictly adhered to.

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 77°F, 25°C)

Important Note:

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.