See all parts that fit your 2011 335i
500-Amp High Current Dual Battery Isolator and Relay for Car Audio Systems (Handles up to 700-Amp Surge)
• 500-Amp continuous / 700-Amp surge
• Ideal for car stereo systems and mobile electronics
• Prevents the main starter battery from draining
• 10V to 16V DC operating range
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• 500-Amp continuous / 700-Amp surge
• Ideal for car stereo systems and mobile electronics
• Prevents the main starter battery from draining
• 10V to 16V DC operating range
The NXV BIR500 Isolator is the perfect solution when adding a secondary battery to your audio system. It allows the second battery to be fully dedicated to the sound system and does not create a voltage drop like common isolators tend to do. The isolator will draw less than 1-Amp when your vehicle is powered on. All of this will ensure that your battery will be isolated with confidence!
When two vehicle batteries are wired in parallel they have a tendency to charge and drain one another. Installing a relay that disconnects the batteries when the engine is off prevents excessive wear and lengthens the life of the batteries. Whenever you turn your engine back on, the batteries will be connected without any voltage drop to the second battery.
6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto, and SiriusXM Ready
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270W Peak (90W RMS) 5.25" Club Series 2 Way Coaxial 3-ohm Speakers
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6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto (Sirius XM Ready)
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6.75" Double DIN Touchscreen Digital Multimedia Receiver with iDataLink Maestro Support, Bluetooth, Apple CarPlay and Android Auto (SiriusXM Ready)
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460W Peak (100W RMS) 4” A Series 2-way 4-ohm Coaxial Car Speakers
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Manufacturer:
Model Number:
BIR500
Weight:
2.00lbs
Internal SKU:
bir500
Internal Product ID:
46583
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Excellent product
Works as advertised. Easy to install. No problems so far.
115 found this helpful
Unbeatable deal
Great product at a great price. Shipping is reasonable and fast.
111 found this helpful
very good
you wont find a cheaper battery isolator that handles 500 amp
great product thanks sonic
99 found this helpful
does what its supposed to
Very nice quality piece. Gets the job done. Very simple to install. Don't overtighten the lock Nuts though.
102 found this helpful
worth the money
Im totally satisfied with my purchase. This is a good and durable product. Like always, sonic electronix processed and shipped my order fast.
100 found this helpful
Very happy.
Product works just as advertised and suits my purposes perfectly. My second battery drives a heavy duty wench, fog lights, and stereo system and the NVX BIR500 has been keeping it well charged. It was easy and quick to install. The only thing I wish it came with would be rubber caps for the posts. I accidentally tapped them more than once, causing sparks (that's why the 3 under 'look/design'), Before I wrapped them in electrical tape. Other than that I've very happy with it.
100 found this helpful
Great equipment for the price
Had my profesional installler put in in line between my batteries (which are in parallel), works like it should with no probloms. Can't beat the price for a 500 amp isolator!
93 found this helpful
Nvx bir500
This prod is to keep your batteries sepret from one to the other is the best way to keep your batteries all way charge and sepret at same time verry good prod
87 found this helpful
Perfect for use with After Market Sound System Battery Power
Met my expectations.Perfect use for allowing the Second Battery to work with my Aftermarket Sound System without draining my Primary Battery.
72 found this helpful
good buy
Exactly as described. Easy to install. Havent gotten the whole system up and running yet so we dont know if it works yet or does its job.
Verified purchase
66 found this helpful
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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:
Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.
