Fishing Reports

selecting a battery
1/1/2018 -
Selecting a marine battery The most important element and commonly over looked part of your boat is the battery. Choosing the correct battery for the application is key in getting the optimum performance from your electronics and security of not being stranded at the dock. The first step to choosing the correct battery is deciding its application. Starting or electronics or both? Starting batteries The starting battery is the heat of your engine and designed specifically to operate your inboard or outboard engine. These batteries are designed to deliver the cranking amps to your engine for a short period and then be recharged by your engines alternator. CCA – cold cranking amps. Measures the batteries starting power. Some marine batteries are rated in MCA – marine cranking amps. The difference in these batteries are a CCA measurement is the amps that can be delivered in 30 seconds at 0 degrees Fahrenheit and MCA is measured at the amps delivered in 30 seconds at 32 degrees. RC – reserve capacity. This is the amount of time it takes to fully charge the battery drop below 10.5 volts while discharging 25 amps. The higher the RC the longer it’s capable of performing. Dual purpose batteries It is suggested to install separate cranking and deep cycle batteries but for small boats or will limited storage a dual purpose may be the best option. In some cases these batteries wont start the engine as well as a true cranking battery and will not tolerate as many deep discharge and recharge cycles as a deep cycle model Deep cycle batteries A deep cycle battery is designed to be a better long term energy source. These batteries come in 4 types – flooded, Gel, AGM and Lithium. Flooded – These batteries consist of reservoirs of liquid acid. Flooded batteries handle overcharging better than AGM and gel batteries but do not tolerate high amounts of vibration. Flooded batteries also self-discharge at a high rate requiring maintenance and off season charging. Gel – Gel batteries handle a highest number of lifetime charging cycles and are maintenance free. This battery is sensitive to overcharging and will needs to be regulated by a smart charging system to prevent damage. Gel batteries may last longer in hot weather applications than an AGM. AGM - absorbent glass mat . This is the most popular style battery in today’s market. These batteries charge up to 5 times faster than flooded batteries and are usually lighter. AGM’s have a low self-discharge rate and also stand up well in low temperatures. Like Gel batteries the agm is sensitive to over charging and need a smart charging system but are not as well fit for high temps like the gel. AGMs standup well to vibration.












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