OPTIMA Yellow Top batteries, featuring SPIRALCELL Technology, are designed for all of your deep cycle needs. It's perfect for people who are serious about sound. OPTIMA's power is cleaner with higher voltage output than conventional batteries. You can play your system louder and longer. And they have a greater cycle life so they can be drained and recharged more often. Plus, they're spill-proof and can withstand 15 times the vibration of ordinary batteries.
The aftermarket has continued to grow in size and advance in technology over the last few years. New developments have created demanding electrical systems requiring a high performance deep-cycle automotive battery. OPTIMA batteries can meet the needs of more enthusiasts in the performance market. Our new group 51, 35 and 75/25 sizes are made just for your compact space power needs.
Using OPTIMA SPIRALCELL Technology, cells are tightly compressed into supportive chambers, giving OPTIMA batteries over 15 times more vibration resistance than traditional batteries. This translates into longer battery life in high vibration applications.
Due to its completely sealed case, the OPTIMA Yellow Top battery is extremely safe and corrosion resistant. Acid can't leak or spill, making them clean, user-friendly and environmentally sound. In addition, the maintenance free sealed case design eliminates the need to add water or clean terminals.
OPTIMA YellowTop is made to install and forget. No matter the conditions, be it dampness, heat, dirt or exposure to extremes in vibration or regular discharge, you can count on OPTIMA to deliver uninterrupted power. OPTIMA's ability to hold a higher voltage during the discharge cycle makes it possible to utilize more of the stored power in the OPTIMA compared to ordinary batteries. The YellowTop handles many discharges as well as re-charges without losing significant capacity. OPTIMA is also ideal for seasonal use because of its very low self-discharge rate. That means you can store your seasonal vehicles all winter without regular charging and still spring out of the starting block when winter is over.
OPTIMA YELLOW TOP BENEFITS:
- Lasts up to 2 times longer than other batteries.
- Constant performance quality keeping your battery running at the same level even as it's being discharged.
- More power in the initial 1, 3, 5, and 10 seconds of the starting process than comparably rated conventional lead acid batteries.
- Ideal for seasonal use, fully charged, it can sit unused for up to 12 months at room temperature (or below) and still start a car.
- 15 times more resistant to vibration than other batteries.
- Nonspillable and can mount in almost any position.
OPTIMA Yellow-Top High power 12-Volt Sealed lead acid engine starting battery.
Battery Model: D75/25
Part Number: 8042-218
Nominal Voltage: 12 volts
NSN: Number applied for, product currently available
Description: High power, dual purpose engine start and deep cycle, sealed lead acid battery
Plate Design: High purity lead-tin alloy. Wound cell configuration utilizing proprietary SPIRALCELL® technology.
Electrolyte: Sulfuric acid, H2SO4
Case: Polypropylene
Color: Case: Light Gray Cover: “OPTIMA“ Yellow
Group Size: BCI: 75/25 Standard (Metric)
Length: 9.313” (236.5 mm)
Width: 6.813” (171.5 mm)
Height: 7.625” (196.9 mm) Height at the top of the terminals.
Terminal Configuration: SAE / BCI automotive and GM style side terminal (3/8 – 16 UNC – 2B, threaded nut).
Open Circuit Voltage (fully charged): 13.1 volts
Internal Resistance (fully charged): 0.003 ohms
Capacity: 48 Ah (C/20)
Reserve Capacity: BCI: 98 minutes (25 amp discharge, 80°F (26.7°C), to 10.5 volts cut-off)
CCA (BCI 0°F): 650 amps
MCA (BCI 32°F): 810 amps
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: D75/25 These batteries are designed for starting and deep cycling applications and for use in vehicles with large accessory loads.
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)
Cyclic or Series String Applications:
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. 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 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 = 35 minutes
50 amps = 75 minutes
25 amps = 140 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 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. 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.
Please check your battery type to ensure that your vehicle will accept this Battery Group prior to ordering!
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