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Battery Bank Capacity vs Charge Rate

By far the most prevalent battery type commonly used by boat electrical system designers remains lead/acid chemistry based. The chemical reaction, lead sulphate being converted into lead and lead oxide, takes place on the surface of the plates. The amount of exposed surface area, diffusion rates, and the time required for the reaction to complete form the basis for the internal resistance (IR) of the battery, or battery bank.

Battery Bank Capacity Calculation

Batteries are available in many voltages, types, and sizes. It is common to cable batteries together to make a bank of batteries of a different voltage or amperage capacity. Lead/acid batteries are most commonly available as 6V or 12V varieties, but, you can find and pay a premium price for, 2V, 8V, or 24V batteries.

Battery Monitors

A boat’s battery bank is at the heart of its DC electrical system and the banks state of charge (SOC) is critical information. Not only is it important to know how much energy remains stored so you do not deplete the bank and no longer have the power needed to run boat’s services, but it is also necessary information to maintain the batteries in good health to maximize the number of cycles possible from the bank.

Choosing Your Solar Panel Location

Solar panels are a great addition to any DC system as an alternative charging source. Once the initial investment of purchasing and installing the panels and charge controllers has been made, there is virtually no further investment necessary. The only maintenance required is to keep the panel surfaces clean.

Starter Batteries vs House Batteries

Battery design and construction is quite different depending on the intended application. A battery that is designed for starting applications will be designed to have the largest plate surface area possible. This high surface area allows for rapid high amperage discharge typical of an engine starting draw down.

Battery Capacity vs. Discharge Rate

There are fundamental electrical principles, many based on Ohms law, that are constantly presenting themselves in various situations. The fact that Watts is equivalent to Volt x Current is always at the forefront of most design considerations. When it comes to battery capacity the amount of current being pulled from the bank has an important consequence to the overall capacity.

Engine Switches and Senders

Most boat operators are familiar with their gauge set and are aware that there is a device on the engine providing a signal to the gauge that allows it to provide useful information. However, many boaters are unfamiliar with the nature of those engine mounted devices.

Switch Terminology

In order to understand switches, it is necessary to understand the terminology associated with switches.First, a switch is a device that controls the flow of electricity by either stopping the flow (the switch is “off” or more correctly it is “open”), or by diverting the flow as with a changeover switch.

Connecting and Disconnecting from Shore Power

There is a suggested sequence for connecting and disconnecting from shore power and sound reasoning for it. When connecting to shore power, first make sure the main AC disconnect switch is in the “off” position and connect to the boat side inlet before connecting to the...

AC Reverse Polarity Indicator

An important part of a boat’s AC shore power system is the reverse polarity indicator light. Typically, power to a 120VAC system is delivered on three lines. A reverse polarity situation arises when the hot and neutral lines are inadvertently crossed making the neutral “hot”.

Page 5 of 20    Total Results: 198