MOSFET Battery Isolator

Power Your Onboard Systems with Precision and Reliability

Modern onboard electrical systems demand independent, high-performance power source — often relying on two or more batteries to seamlessly supply 12V or 24V devices. To ensure efficient charging and total reliability, you need intelligent battery isolation that keep your system running at its best.
Unlock Superior Battery Management with MOSFET Battery Isolators—Efficiency, Reliability, and Performance in One Smart Solution!

Why Choose Dolphin MOSFET BI?

Simultaneous Charging, Zero Compromise

Charge two or more batteries at once from a single source, without connecting them together. Your starter battery stays protected, even if your accessory battery drains.

Near-Zero Voltage Loss

Unlike traditional diode isolators, MOSFET technology ensures minimal voltage drop—as low as 0.02V at low current and just 0.1V at higher loads. That means more power where it matters—your batteries!

No Need for Alternator Upgrades

With Dolphin BI, no extra voltage boost is required from your alternator. Just optimize your cable setup—keep lengths short and use the right gauge to minimize losses.

Smart Alternator Activation

Some alternators need a DC voltage kickstart to begin charging. Dolphin BI’s built-in energize input ensures your alternator starts reliably every time—no more dead starts!