

Whenever you are working on your electrical system, remove the positive battery cables from the battery terminals to eliminate the chance of a short circuit and/or possible electrocution. Batteries contain a tremendous, and potentially dangerous, amount of stored energy.Since they have lower storage capacity than comparably-sized deep cycles, we recommend them for boats with two identical batteries used interchangeably for starting and house electrical loads.ĭo-it-Yourself: Installing a Battery Charger Most boats with dual-battery systems use one starting battery and one deep cycle battery.ĭual-purpose batteries work well in some applications and are a good compromise because they tolerate deep discharges that would ruin a typical starting battery. Any battery used to power onboard DC loads such as lighting, trolling motors, inverters and other systems should be a quality deep-cycle battery, like our West Marine brand. They are appropriate for sailboats, fishing boats and all other boats with larger DC power requirements. They are appropriate as the single battery for wakeboard boats, runabouts, personal watercraft and other boats with minimal DC loads where the engine is always running.ĭeep-cycle batteries can endure repeated deep discharging and recharging without damage. They can supply lots of current for a short period of time, but like to be recharged almost immediately and are not tolerant of deep discharges. Starting batteries are similar to automotive batteries. Dual-purpose flooded batteries combine the ability to withstand deep discharges with cranking power to start your engine
