![[ALL STAR TRUCK PARTS] 12V 140 Amp Dual Battery Smart Isolator - VSR - Voltage Sensitive Relay Specially Designed for ATV, UTV, Boats, RV's, Campers 5th Wheels Off Road Vehicles Rhino Polar](https://images-na.ssl-images-amazon.com/images/I/618Bv7QxvrL.jpg)
A smart isolator is the ultra-simple and most technologically advanced method of automatic battery isolation. These units can be installed between batteries with a common ground to automatically control the charging process to the batteries but continue to provide isolation when a charging source is unavailable. The small size and rugged construction of these units allow for quick simple installation for even the most novice DIYer.The smart isolator is also “Dual Sensing” which senses the charge of both batteries. If either battery is receiving a charge, e.g. a battery charger is connected to the auxiliary battery; the relay will engage and charge both batteries. The advanced technology always insures that the first battery is fully charged (13.3v) before connection is made to the second battery. This prevents problems that may result from your charging source being too low in amps to charge all batteries as once.If placed in linear sequence between each battery the isolator units can provide proper charging for several batteries in a multiple battery setup such as in larger boats that may have 2 or more house batteries.How it works: The smart isolator allows two batteries to be charged at the same time. When the engine is started and either battery reaches 13.3 volts, the relay engages, allowing two battery banks (start and accessory) to be charged simultaneously. When the voltage drops below 12.8 volts (eg the engine is stopped), the relay disengages, separating the batteries.This system eliminates the possibility of draining the start battery and protects sensitive electronic equipment powered from the house battery from harmful engine start up spike.
R**T
Easy to install, but doesn't work.
Installed the relay to replace my stinger isolator. Started up the car, measured the voltage and confirmed there was ~14.1-14.2 volts going into the relay from the starter battery, but 0 volts from the relay to the 2nd battery. Tried to isolate issue by checking if ground wire (the black wire that's preinstalled)/bad connections or cables were the issue but no problems there. It's looking like the item itself was defective, contacted customer support and may update if/when they respond.TL;DR=unit doesn't turn on although it's connected properly and has power going in via the battery and ground but no power going out.
S**Y
Doesn't conserve battery
Once fully charged this device will drain one of the two batteries until it hits the cutoff voltage which is at the limit of maybe starting the vehicle.Should increase the SHUTOFF voltage limit.
A**R
didn't work
the instructions were east to follow, and installation was easy. However, when installed the unit would not disengage when the car was off, so it drained my secondary battery. I have reached out to the seller multiple times, but they have not responded at all.
S**E
Great battery saver
Seems to be working very well and is super easy to install. Doing a great job keeping both batteries charged.
M**.
Awesome for dual battery rzr set up.
Perfect product for the dual buttery set up in my 2019 turbo rzr.
Z**D
Glad I bought it!
Works as intended and keeps my second battery charged up. Easy to install, excellent quality and great price!
A**R
Works
Works
A**N
don't buy
It doesn't work at all and I can't contact the seller
Trustpilot
2 weeks ago
4 days ago
