Click to enlargeSentry Marine Battery Charger 115/230V Input 24VDC - 40A - 3-Bank
Manufacturer: SentryPart #: SFR2440/3XSKU: 106681
- 40A
- 230V
Item #: 106681
Category: Battery Chargers
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Description
Marine Battery Charger 115/230V Input 24VDC - 40A - 3-Bank Sentry SFR Ferroresonant series marine battery chargers are in an elite class, setting the standard for dependable battery chargers. Sentry chargers are designed to operate for decades in the harsh marine environment.
They are completely field serviceable and come with a 2-year parts and labor warranty. Features: Available in 12vdc, 24vdc and 32vdc models Completely charge the battery and turn off to prevent overcharging Ignition protected to allow engine room installations Charging outputs for Lead-Acid, Optional AGM, Gel, and Lead Calcium This product may not be returned to the original point of purchase.
Please contact the manufacturer directly with any issues or concerns.
Specifications
| Brand | Sentry |
|---|---|
| Part Number | SFR2440/3X |
| EverTide SKU | 106681 |
| UPC | 850046155925 |
| Voltage | 230 V |
Specifications are provided by the manufacturer. Confirm fitment for your application before ordering, or contact us and we'll help.
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Returns are accepted within 30 dayson items that are unused and in their original packaging. Some items may be subject to a manufacturer restocking fee. Special-order items may not be eligible — if you're unsure, ask us before ordering.
Sentry productscarry the manufacturer's standard warranty. For a warranty claim or a return authorization, see our full returns policy or contact us.
Electrical — frequently asked
- What’s the difference between marine wire and regular wire?
- Marine wire uses tinned (tin-coated) copper strands that resist the corrosion salt air causes, and it’s more finely stranded so it flexes with vibration without breaking. Standard automotive or household wire corrodes and fails much faster in a marine environment.
- How do I size a fuse for a marine circuit?
- Size the fuse to protect the wire, not just the device. Match the fuse rating to the wire gauge’s safe current capacity so the fuse blows before the wire overheats. When adding a new circuit, follow the wire manufacturer’s ampacity chart for the gauge and run length you’re using.
- Do I need a battery switch on my boat?
- A marine battery switch is strongly recommended. It lets you disconnect the battery for storage or service, isolate a failed battery, and — on multi-battery setups — choose which bank powers the boat. It’s a core safety and reliability component.
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