OPTIMA® REDTOP® 75/25 Ultra high-performance SPIRALCELL TECHNOLOGY® AGM (absorbent glass mat) battery with reliable cranking power for your auto, car or truck and twice the life. The OPTIMA® REDTOP® will outperform and outlast traditional batteries in demanding cranking/starting applications. The ultimate high-CCA starting battery for vehicles that have alternators capable of keeping up with all electrical loads.
If you have demanding electrical accessory loads such as winches, audio systems, and other devices, take a look at the YELLOWTOP® product line.
The OPTIMA® model number for this battery is 75/25. If you are replacing an OPTIMA® battery you already have, this model is the same as batteries marked 8022-091, 9022-091, 27980, 75-25, 75/35-925, RED75/35, 12853, SC75U, RED35/75, or N9975/25RED.
Includes applicable installation and/or height adapters for this battery.
|NSN:||6140 01 475 9361|
|UPC Code:||8 11405 00091 1|
|Cold Cranking Amps:||720|
|Nominal Voltage:||12 volts|
|Open Circuit Voltage (fully charged):||12.8 volts|
|Internal Resistance (fully charged):||0.0030 ohms|
|Reserve Capacity:||BCI: 100 minutes (25 amp discharge, 80°F (26.7°C), to 10.5 volts cut-off)|
High purity lead-tin alloy. Wound cell configuration utilizing proprietary SPIRALCELL technology®
Sulfuric acid, H2SO4
|Case Color:||Dark Gray|
|Cover Color:||“OPTIMA“ Red|
|Group Size:||BCI: 75/25|
|Post Type:||Dual SAE/GM|
|CCA (BCI 0°F):||44 Ah (C/20)|
|MCA (BCI 32°F):||BCI: 90 minutes (25 amp discharge, 80°F (26.7°C), to 10.5 volts cut-off)|
The following charging methods are recommended to ensure a long battery life:
Recommended Charging Information
|Alternator:||13.3 to 15.0 volts; no amperage limit|
|Battery Charger:||13.8 to 15.0 volts; 10 amps maximum; 6-12 hours approximate|
|Float Charge:||13.2 to 13.8 volts; 1 amp maximum current (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.|
(example assuming 100% discharge – 10.5 volts)
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)
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.