12V 140A Dual Battery Isolator VSR LCD | Split Charge Relay
12V 140A Dual Battery Isolator VSR LCD | Split Charge Relay
12V 140A Smart Dual Battery Isolator with LCD Display
Keep your vehicle's power system running efficiently with this 12V 140A Adjustable Dual Battery Isolator. Featuring a real-time LCD display and fully customizable voltage settings, this intelligent Voltage Sensitive Relay (VSR) is the ultimate split-charge solution for 4WDs, campers, motorhomes, yachts, ATVs, and UTVs. Made in Mainland China.
Key Features
- Intuitive LCD Display: Built-in screen shows real-time voltage for BATT1 and BATT2 (4.5V–20V range) so you can monitor both batteries at a glance.
- Customizable Voltage Control: Adjust CUT-IN and CUT-OUT voltages to suit different battery types. Primary battery voltage adjustable from 11.0V to 14.0V for precise power management.
- Smart Delay Function: Prevents frequent switching caused by unstable current, extending isolator and battery service life. Delay time is user-configurable from 3s to 60s (recommended: 15s).
- Manual & Automatic Modes: Switch seamlessly between automatic and manual operational modes for maximum flexibility during maintenance or specific power management scenarios.
- Protective & Durable Design: Built-in surge protection and anti-reverse connection support safeguard your batteries from excessive drain and unexpected failures. ABS shell rated for ambient temperatures from -20°C to 50°C.
Specifications
| Rated Voltage | 12V |
| Continuous Current | 100–140A |
| Instantaneous Current | 160A |
| Current Consumption (Charging) | 250mA |
| Adjustable Voltage Range | 11.0V – 14.0V |
| Detachment Delay | 5–10 seconds |
| Recommended Fuse | 80A |
| Power Stud | M6 Copper Screw Nut |
| Surge Protection | Built-in |
| Shell Material | ABS |
| Dimensions | 68 x 68 x 55 mm (2.68 x 2.68 x 2.17 in) |
| Weight | 200g |
| Ambient Temperature | -20°C to 50°C |
| Compatible Applications | Car, Motorhome, Camper, Yacht, ATV, UTV, Boat, Off-Road Vehicles |
| Country of Origin | Made in Mainland China |
What's in the Box
- 1 x Battery Isolator
- 1 x Accessory Kit
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Learn more: FuelEconomy.gov on vehicle maintenance
Frequently Asked Questions
Q: What vehicles is the 12V 140A Dual Battery Isolator compatible with?
A: This dual battery isolator is designed for any 12V system including cars, motorhomes, camper vans, yachts, boats, ATVs, and UTVs. Its wide voltage range and adjustable settings make it versatile for virtually any 12V dual-battery setup.
Q: Can I adjust the cut-in and cut-out voltage thresholds?
A: Yes. The voltage sensitive relay (VSR) allows you to customize the CUT-IN and CUT-OUT voltage thresholds for your specific battery type, with the primary battery adjustable between 11.0V and 14.0V. This ensures optimal charging and isolation tailored to your setup.
Q: What is the delay function and why is it important?
A: The delay function prevents the isolator from switching on and off repeatedly due to unstable current fluctuations. The delay time can be set between 3 and 60 seconds (15 seconds is recommended), which helps extend the lifespan of both the isolator and your batteries.
Q: Does this isolator include surge and reverse-connection protection?
A: Yes. The unit features built-in surge protection and supports anti-reverse connection, helping to safeguard your electrical system and batteries during installation or operation.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.