Buying Guides

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Sailboat at anchor in a turquoise cove with rigid solar panels on a stern arch
By: Boat Supplies Direct
18 October 2026

Marine Solar Panel Buying Guide: How Many Wat...

Quick answer: Add up how many amp-hours your boat uses in a day, then size your panels to replace...

By: Boat Supplies Direct
18 October 2026

Marine Solar Panel Buying Guide: How Many Wat...

Quick answer: Add up how many amp-hours your boat uses in a day, then size your panels to replace...

Boat cabin galley at anchor with a coffee maker and laptop running on inverter power
By: Boat Supplies Direct
18 October 2026

Marine Inverter Buying Guide: How to Size, Po...

How to size a marine inverter by watts and surge, how much battery it really takes, pure sine vs....

By: Boat Supplies Direct
18 October 2026

Marine Inverter Buying Guide: How to Size, Po...

How to size a marine inverter by watts and surge, how much battery it really takes, pure sine vs....

Neat marine wiring install with tinned wire and heat shrink ring terminals in a boat console
By: Boat Supplies Direct
18 October 2026

Marine Wire and Terminal Buying Guide: Gauge,...

Quick answer: Use tinned, stranded marine wire (never solid or bare-copper automotive wire). Size...

By: Boat Supplies Direct
18 October 2026

Marine Wire and Terminal Buying Guide: Gauge,...

Quick answer: Use tinned, stranded marine wire (never solid or bare-copper automotive wire). Size...

Bay boat in a Florida marina slip plugged into shore power to charge its batteries
By: Boat Supplies Direct
18 October 2026

Marine Battery Charger Buying Guide: How Many...

Quick answer: Choose an onboard charger with one bank (output) per battery or battery bank, and t...

By: Boat Supplies Direct
18 October 2026

Marine Battery Charger Buying Guide: How Many...

Quick answer: Choose an onboard charger with one bank (output) per battery or battery bank, and t...

Boat battery compartment with two strapped batteries and a red rotary battery switch
By: Boat Supplies Direct
18 October 2026

Battery Switch and Isolator Buying Guide: Swi...

Quick answer: Every boat with a battery needs a battery switch as a master disconnect. If you hav...

By: Boat Supplies Direct
18 October 2026

Battery Switch and Isolator Buying Guide: Swi...

Quick answer: Every boat with a battery needs a battery switch as a master disconnect. If you hav...

Bass boat at sunrise with trolling motor deployed and deep cycle batteries in the rear hatch
By: Boat Supplies Direct
18 October 2026

Marine Battery Buying Guide: Starting vs. Dee...

Quick answer: Use a starting (cranking) battery for the engine and a deep cycle battery for troll...

By: Boat Supplies Direct
18 October 2026

Marine Battery Buying Guide: Starting vs. Dee...

Quick answer: Use a starting (cranking) battery for the engine and a deep cycle battery for troll...