Reserve capacity is the number of minutes a battery can maintain a useful voltage under a 25 ampere discharge. The higher the minute rating, the greater the battery's ability to run lights, pumps, inverters, and electronics for a longer period before recharging is necessary. The 25 Amp. Reserve Capacity Rating is more realistic than Amp-Hour or CCA as a measurement of capacity for deep cycle service. Batteries promoted on their high Cold Cranking Ratings are easy and inexpensive to build.

Deep cycle refers to applications that typically discharge 60 to 70% or more of the battery capacity. An automotive battery is an SLI battery (starting, lighting and ignition). Its plates are designed to deliver maximum power for a short duration. Starting an engine typically discharges an SLI battery 3% or less.

Unfortunately, the term Deep Cycle has been overused by the battery industry as a sales tool to imply a heavy-duty product. This has led to confusion and difficulty in battery selection. One must understand that any battery may be termed deep cycle as all batteries may be fully discharged and charged. However, a true deep cycle battery, such as Rolls or Lifeline, is capable of thousands of these hard cycles during its life without losing its capacity.

Deep-cycle batteries typically feature thick plates with a high-density active material. The thick battery plates allow for reserve energy to be stored deep within the battery plate and released during slow discharge such as trolling or electronic instrument use. The high-density active material remains within the batteries' plate/grid structure longer, resisting the normal degradation found in cycling conditions.

The reserve capacity of a battery is defined as the number of minutes that it can support a 25 ampere load at 80°F until its terminal voltage drops to 1.75 volts per cell or 10.50 volts for a 12V battery. Thus a 12V battery that has a reserve capacity rating of 100 signifies that it can be discharged at 25 amps for 100 minutes at 80°F before its voltage drops to 10.75 volts.(Return to Top)

The mAh rating refers to the storage capacity available for a particular battery. A battery with a capacity rating of 2400 mAh could deliver a current of 2400mA for one hour. Higher mAh ratings for the same battery type will generally mean longer run times. This does not apply when comparing different types of batteries. This means that you may not be able to predict how long your electronic device will run just by looking at the capacity rating.

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If you're an audio nut you will have no doubt heard of deep-cycle batteries. Most normal and deep-cycle batteries are lead-acid cells and use exactly the same chemistry for their operation. The difference is in the way that the batteries optimize their design. A normal car battery is designed to provide a very large amount of current for a short period of time. This surge of current is needed to turn the engine over during starting.

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Max O/B Motor means: maximum power outboard motor that can be safely used to plane a boat loaded to the maximum capacity on normal water surface conditions. Please exercise common sense and caution when using maximum motor capacities. Do not jump from wave to wave as new 4-stroke motors are much heavier then 2-strokes and provide extra strain on a transom.

Lead-Acid batteries do not suffer from memory effect. Many people think they have a memory because they experience a reduction in capacity or run-time as the battery ages. The active paste material in a lead-acid battery is a consumable item, similar to tread on a tire. Every time you cycle the battery some of the paste is used up. As the battery ages, less of the active paste is available to charge and discharge, resulting in a reduced operating time.

Capacity is the measure of the energy stored in a battery. This is shown in the Ah (Ampere hour) or mAh (milli-Ampere hour), capacity defines the ability of a battery to perform under a specified discharge criteria First, never connect batteries of different chemistries, voltage or capacity in parallel. The positive terminal of the first battery is connected to the negative terminal of the second battery; the positive terminal of the second is connected to the negative of the third, etc.

In Lost Wages vs. Capacity to Earn, Dr. Tony Gamboa, an expert in the field of brain injuries, discusses his in-depth method of determining a brain injured persons capacity to earn as companed to the traditional lost wages concept of determining how much the injured party might have been able to earn. Getting Started | About Ringler Associates | Structured Settlements | Global/Local Industry News | Life Companies | Ringler Radio

Reserve capacity is the batteries ability to produce 25 amps over a given (Reserve Capacity Minutes) time period until terminal voltage drops to 10.5 Volts DC. Reserve capacity is that number of minutes. An example is the Energy1 model NSB210FT has a reserve capacity of 400 minutes. This battery can produce 25 amps for 400 minutes.