![]() ![]() The higher reserve capacity gives you a longer shelf-life to give you the power when you need it, where you need it. The unique SpiralCell design provides a strong and clean power source, ensuring the safety of you, your family and the environment. This battery is great for heavy use by hot rods and off-roaders with its leak-proof, high power, and starting ability. Optima 35 RedTop is designed to deliver high power cranking ability even in harsh weather conditions. This item is not for sale in Catalina Island.Fifteen times more resistant to vibration for durability.Optimal starting power even in bad weather.Reserve capacity of 90 minutes for constant performance. ![]() It is lightweight, maintenance free battery, it can be operated in any position, comes with 36 months limited warranty and has been used and tested in countless real-life situations.įor more reviews and recommendations, feel free to check Optima Batteries 8020-164 35 RedTop Starting Battery Amazon link (link opens in the new window).Optima Batteries 8020-164 35 RedTop Starting Battery Long Story Short: If you are looking for a good and reliable Group 35 starting battery, consider Optima 35 RedTop battery. ![]() If the battery must be recharged with the battery chargers, use Optima Digital 400 (max charging current of 4 Amps) and Optima Digital 1200 (max charging current of 12 Amps).īoth units are intelligent battery chargers designed to charge starting, dual purpose and deep cycle AGM and other lead-acid batteries, they can recharge even deeply discharge batteries and they also can be used as battery maintainers.įor more info about these chargers, feel free to check Optima Digital 400 and Optima Digital 1200 Amazon links (links open in the new windows). Personally, if the battery is in the car or on the boat with acceptable 'parasitic' loads, let the alternator charge the battery. float charge: 13.2 - 13.8 volts with the maximum current of one Amp. rapid charge: maximum voltage of 15.6 volts with no current limit as long as the battery temperature is below 125☏ (~52☌), by battery charger: 13.8 - 15.0 volts, 10 Amps max, 6-12 hours, in the vehicle or boat by the onboard alternator, Since it is optimized for starting/cranking applications, Optima 35 RedTop also features rather acceptable price, when being compared with other Group 35 batteries.ĭepending on its use, Optima 35 RedTop should be charged (according to the manufacturer): Note: Amazon links in the table open in the new windows ('Model' column), feel free to check them for most up-to-date prices and offers. When compared with other Group 35 batteries, Optima 35 RedTop features low weight, excellent starting features, and good RC, but since it is so lightweight, its 20h capacity is relatively low. But, don't forget that this battery is not intended for deep cycle applications and such use may significantly shorten the battery's operating life. Optima 35 RedTop features very low internal resistance of 3 mΩ, ensuring high CCA and MCA values - 720 CCA Amps and 910 MCA Amps.Īlso, it features 90 minutes RC (Reserve Capacity) value, which is excellent value for 44 Ah battery. Recommended voltage for all Optima RedTop batteries and for BlueTop 34M (also starting battery) is 12.6 to 12.8 which is slightly lower than the recommended voltage for Optima YellowTop batteries and the dual purpose Optima BlueTop batteries of 13.3 - 13.2 volts. Optima 35 RedTop features nominal capacity of 44 Ah and nominal voltage of 12 volts. Note: Optima RedTop batteries are starting automotive batteries, Optima YellowTop batteries are dual purpose automotive batteries, Optima BlueTop batteries with dark gray case are marine starting batteries and Optima BlueTop batteries with light gray case are marine dual purpose batteries. Case color is dark gray, with the red cover color - hence the name. Optima 35 RedTop is maintenance-free battery featuring SAE terminal posts and polypropylene case. In most cases this difference of ~0.3 inches (~0.8 cm) is negligible, but have this in mind when ordering this battery - for short, measure your battery compartment first. Its physical dimensions are (L x W x H) 9.38 x 6.75 x 7.69 inches (~23.8 x 17.1 x 19.5 cm) and is defined as 'Group 35' battery, although it is slightly longer than standard Group 35 battery (L x W x H - 9.0625 x 6.875 x 8.875 inches, 23.0 x 17.5 x 22.5 cm). Optima 35 RedTop weighs 31.7 pounds (~14.4 kg) and is one of the lightest lead-acid BCI Group 35 batteries, with only lithium batteries featuring less weight. Thus, it should be used as starting battery only. Optima 35 RedTop is AGM (Absorbent Glass Mat) SLA (Sealed Lead Acid) starting battery, designed to provide large bursts of energy for short periods of time. Optima 35 RedTop Features and Specifications ![]()
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