Panneau chargeur USB étanche pour bateau 12/24V – double sortie 5V (2.1A + 1A) avec capuchon
Schéma de montage panneau USB bateau – double port 5V avec disjoncteur 5A intégré Baywatt
Panneau chargeur USB étanche pour bateau 12/24V – double sortie 5V (2.1A + 1A) avec capuchon
Schéma de montage panneau USB bateau – double port 5V avec disjoncteur 5A intégré Baywatt

USB Charger Boat Panel – Dual Ports (3.1A) 12/24V

SKU: RSP-US2
13.44€
13.44€
Subtotal: 13.44€

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Description

12V 200A Dual Battery Isolator Relay

BAYWATT 12V 200A Dual Battery Isolator Relay (also called a split charge relay) is a cost-effective way to manage two batteries on board. It protects the starter battery, charges the house battery when the engine is running, and adds simple, reliable control to your 12V system.

Simple, smart & reliable power management

  • Microprocessor-controlled: monitors voltage, current, and temperature
  • Built for marine use: sealed housing and durable components
Preserves starting power Keeps the starter battery isolated from house loads when the engine is off.
Extends battery life Prevents deep discharge of the auxiliary battery for longer service life.
Surge protection Integrated protection helps absorb harmful voltage spikes.
Easy installation Clear connection points and straightforward wiring.
200A continuous Heavy-duty rating suitable for high-demand marine setups.

How it works

  1. Engine off: The relay is open; starter and house batteries remain isolated.
  2. Engine on: A low-voltage control signal (ignition/alternator) activates the relay.
  3. Charging: The relay closes; the alternator charges both batteries.
  4. Stop: Signal disappears; the relay opens and isolates the batteries again.

VSR vs. Dual Battery Isolator Relay

Option How it operates Best for
Dual Battery Isolator Relay Simple on/off relay controlled by a low-voltage signal. Cost-effective, straightforward installs, manual control logic.
Smart Isolator (VSR) Automatically senses voltage and connects the house battery when the start battery is charged. Hands-off operation, optimal charge sharing, mixed-use setups.

Recommendation: For simplicity and price, choose this 12V 200A relay. For automatic voltage-sensing control, see the VSR Ref BI12140.


Key features

12V dual-battery readyDesigned for typical marine charging systems.
Integrated protectionsOver/under-voltage and surge protection.
User-friendlyClearly marked terminals and compact form factor.
Weather-resistantIP65 housing for harsh environments.
Microprocessor controlEnhances reliability and switching accuracy.
Battery chemistry compatibleLead-acid, AGM, and lithium (BMS-equipped).

Add to cart See technical specs

Specification

Technical Specifications

Parameter Value
Nominal Voltage 12V
Continuous Current Rating 200A
Peak Current Rating 400A
Voltage Cut-in 13.3V
Voltage Cut-out 12.8V
Standby Current Draw < 5 mA
Over-voltage Protection Disconnects at > 16V
Under-voltage Protection Disconnects at < 10V
Reverse Polarity Protection Yes (prevents wiring damage)
Surge Protection Integrated
Operating Temperature −40°C to +85°C
Storage Temperature −40°C to +125°C
Humidity 0–95% RH
Waterproof Rating IP65
Dimensions (L × W × H) 100 × 80 × 50 mm
Weight 300 g
Housing Material ABS / Nylon
Warranty 1 year