Boat battery isolator RCE+

Product overview
RCE+ electronic battery isolators enable simultaneous charging of 2 or 3 batteries from a single DC source while keeping each battery electrically isolated. Discharging one battery (for example the house/service battery) will not discharge the starter battery. The MOSFET design provides a negligible voltage drop compared with conventional diode isolators (diode models typically generate ~0.7 V DC drop).

Applications and compatibility
The DC input may be an engine alternator, battery charger, wind turbine, solar panel, hydrogenerator or other onboard/industrial DC source. RCE+ units work with electronic alternators thanks to a dedicated IG (Ignition/priming) terminal that powers the + output during engine start. They support 12 VDC and 24 VDC systems and are compatible with lead-acid and LiFePO4 battery chemistries commonly used in marine and industrial installations. Documentation (datasheet, user manual) and demonstration video are available.

Sizing recommendation
Select the isolator rating according to the maximum current available from the DC source; for example, pair a 120 A alternator with a 180 A isolator to allow for cases where a deeply discharged or shorted battery may draw the full input current.

General characteristics

• MOSFET technology ensures negligible voltage drop between input and outputs compared with diode isolators.
• No significant voltage loss in normal operation — alternator output need not be increased to compensate.
• Multi-voltage operation: supports 12 VDC and 24 VDC; compatible with LiFePO4 batteries.
• Available with 2 or 3 outputs to split an input source among multiple batteries or consumers.
• IG (Ignition) input: powers the + output during engine start for compatibility with electronic alternators.
• Designed for interchangeability with previous RCE models without modification.
• Recommended sizing guidance included (example: 120 A alternator → 180 A isolator).
• Warranty indicated on product material: 3 years.

Technical specifications

• Technology: MOSFET transistors
• Voltage: 12 VDC and 24 VDC
• Outputs: 2 or 3 outputs (battery splitting)
• Compatible battery chemistries: Lead-acid, LiFePO4 (lithium)
• Special terminal: IG (Ignition/priming) input for electronic alternator compatibility
• Typical voltage drop: negligible (vs diode isolator ~0.7 V DC)
• Input sources supported: alternator, charger, wind turbine, solar panel, hydrogenerator
• Interchangeability: designed to replace previous RCE models without modification
• Sizing recommendation example: 120 A alternator → select 180 A isolator
• Warranty: 3 years