Description
Sea-Dog Smart Battery Isolator | Boat Supply Store
This intelligent dual battery isolator automatically manages charging cycles to prevent a dead starting battery, a critical concern for offshore anglers and cruising vessels alike. It precisely senses input voltage, engaging at 13.3V and disengaging at 12.8V to maintain optimal charge for your primary engine battery while simultaneously charging auxiliary systems. Constructed with durable, machined brass and injection-molded nylon, its IP65 rating ensures robust performance against environmental ingress, supporting up to 140A continuous current.
Key Features
- Automatically charges two batteries simultaneously
- Isolates batteries to protect the starting battery
- Senses input voltage to engage/disengage circuits
- Surge protected against electrical spikes
- LED indicator for engaged status
- Durable machined brass construction
- Weatherproof nylon housing
- IP65 rated for dust and water resistance
Specifications
| Product Specifications | |
|---|---|
| Voltage | 12VDC |
| Amperage Rating | 140A |
| Cut-in Voltage | 13.3V |
| Cut-out Voltage | 12.8V |
| Ingress Protection Rating | IP65 |
| Construction | Machined brass and injection molded nylon |
Who This Is For
Boat owners with dual battery systems prioritizing a reliable starting battery. Ideal for those seeking automatic battery management to ensure engine ignition is always possible, even with significant auxiliary loads.
How It Compares
| Feature | Sea-Dog Smart Battery Isolator | Blue Sea Systems ML |
|---|---|---|
| Voltage | 12VDC | 12/24/32V DC |
| Amperage Rating | 140A | 120A |
| Cut-in Voltage | 13.3V | 13.0V |
| Cut-out Voltage | 12.8V | 12.8V |
| Surge Protection | Yes | Not specified |
| IP Rating | IP65 | Not specified |
Common Concerns Answered
I need a battery isolator for a 24V system, does this work?
The Sea-Dog Smart Dual Battery Isolator is specifically designed for 12VDC systems and does not support 24V applications. If your vessel utilizes a 24V system, you will need to seek alternative solutions designed for that voltage range.
Is this unit difficult to install?
Installation difficulty is rated 2/5, requiring basic DC wiring knowledge. Connecting battery terminals and the charging source is necessary, but clear instructions and proper tools make it a manageable DIY project for most boaters.
Will this handle my high-draw accessories?
This isolator is rated for 140A, which is suitable for most dual-battery setups, including those with moderate auxiliary loads. Always verify your total expected current draw against the isolator's rating.
Frequently Asked Questions
How does the Sea-Dog Smart Dual Battery Isolator ensure my starting battery is always charged?
It automatically senses the charging voltage from your alternator; when the voltage rises above 13.3V, it connects the two batteries to allow charging. When the voltage drops below 12.8V, indicating the engine is off or the primary battery is depleted, it disconnects the auxiliary battery, preserving the charge on your starting battery.
What are the cut-in and cut-out voltages for this battery isolator?
The isolator features a cut-in voltage of 13.3V, meaning it connects the batteries when the charging source reaches this voltage. The cut-out voltage is 12.8V, at which point it disconnects the batteries to protect the starting battery.
Is this battery isolator waterproof?
This battery isolator is IP65 rated, which signifies it is protected against dust ingress and low-pressure water jets from any direction. While not submersible, it is designed to withstand typical marine environmental conditions.
What is the amperage rating of the Sea-Dog Smart Dual Battery Isolator?
The Sea-Dog Smart Dual Battery Isolator has a robust amperage rating of 140A, making it suitable for a wide range of marine charging systems.
Can this battery isolator be used with 24V systems?
No, this specific Sea-Dog Smart Dual Battery Isolator is designed exclusively for 12VDC systems. It is not compatible with 24V or higher voltage configurations.
