The Fohirey Battery Isolator Switch is a car and marine battery isolator that cuts the electrical connection to prevent parasitic drain when a vehicle or boat is left unused. That gives owners peace of mind and reduces the risk of being stranded with a flat battery. Will it fit everyday vehicles and weekend craft without complicated installation?
⚡ At a Glance
- • Isolation Capability: DC 12V–24V two-position On/Off switch, rated 200A at 12V; recommended mounting on the negative battery post
- • Best for: Car, boat, RV and truck owners who need a simple way to stop battery drain during storage
- • Not ideal for: Users who require remote-controlled or automatic switching and integrated hands-free systems
Manual two-position switch isolates batteries in DC 12V–24V systems and is rated for 200A at 12V. Robust ABS housing and solid brass fastenings combine with a waterproof key cap and two removable keys.
Prevent Battery Drain – With a two-position 12V/24V On/Off switch
Manual On/Off mechanism interrupts the battery circuit for DC 12V–24V systems and is specified at a standing current capacity of 200A at 12V; recommended mounting on the negative battery post to match common installation practice.
Stops parasitic current draw during storage, preserving battery charge and reducing the likelihood of unexpected failure.
Durable, Corrosion-Resistant Construction – Thanks to ABS housing and solid brass fastenings
ABS plastic surrounds internal components for impact and moisture resistance while solid brass nuts and washers maintain reliable electrical contact and resist rust in damp environments.
Suitable for automotive and marine use where exposure to moisture and salt can otherwise cause rapid deterioration.
Secure Operation and Weather Protection – With waterproof cap and two removable keys
A protective waterproof cap shields the keyhole from dust and water ingress, while two removable keys allow the switch to be locked in the off position for security.
Provides controlled access, prevents accidental switching and keeps the keyhole protected when not in use.
✨ The 4 Key Reasons for Fohirey Battery Isolator Switch
- Protective waterproof cap – Prevents water and dust entering the keyhole during storage
- Solid brass hardware – Minimises corrosion for dependable electrical connections over time
- Two removable keys – Offer secure lock-out and convenient emergency power cut-off control
- Simple manual On/Off operation – Provides quick, reliable power isolation when needed
📋 Technical Details at a Glance
- Category: Battery isolator switch
- Brand: Fohirey
- Model / Product ID: B093HD4NWT
- Voltage Compatibility: DC 12V–24V
- Switch Positions: On/Off (2-position)
❓ Frequently Asked Questions
Q: Does the switch work with 24V systems?
A: Yes. The switch is specified for DC 12V–24V systems and is suitable for both 12V and 24V electrical setups.
Q: Where should the switch be mounted on a battery?
A: Mounting on the negative battery post is recommended in the product description to match installation guidance.
Q: What comes in the package?
A: The package includes one battery disconnect switch and two removable keys, plus a protective waterproof cap for the keyhole.
🏆 Our Verdict
The Battery Isolator Switch is well suited to vehicle owners, boaters and workshop operators who want a straightforward, manual method to isolate batteries. Robust materials, a manual On/Off mechanism and a waterproof key cap make it a practical safety and maintenance accessory. Offers clear long-term value through durable construction and simple upkeep.
