The most popular type of marine battery is called a “lead acid” battery. It has been around for over 100 years and is still used in many applications.
Lead Acid Batteries
A lead acid battery consists of two electrodes (positive and negative) separated by an electrolyte solution. In contrast, a lithium ion battery contains only one electrode (the positive). This means that there is no need for an electrolyte solution. Instead, the lithium ions move between the two electrodes.
Lithium Ion Batteries
While both batteries offer similar power outputs, lithium ion batteries tend to last longer than lead acid batteries. They also require less maintenance and are more environmentally friendly. However, these benefits come at a cost. Lithium ion batteries are much more expensive than lead acid batteries.
Nickel Cadmium Batteries
Both nickel cadmium (NiCd) and lead acid batteries are used in marine applications. NiCd batteries are cheaper than lead acid batteries, but they do not last as long. On the other hand, lead acid batteries are more durable, but they are more expensive.
If you need a longer lasting battery, then you should consider using a lead acid battery. They will provide power for up to 20 years. However, these batteries are much heavier and larger than NiMH batteries.
Zinc Air Batteries
On the other hand, if you need a smaller battery, then you should go with a zinc air battery. These batteries last only 2-3 years, but they weigh less than half as much as lead acid batteries.