Low Voltage Disconnect with recessed selector, 12V/24V Auto Detect, GPC-1005B-R

worth it

UPDATE: It's been 2 weeks and it's been working fine with a 30amp fuse in it. Has not popped it yet. I also tested with the dome light on and after 2 days it did it's job disconnecting the power to the car. I put the battery charger back on and in an hour it was back to green light and the car started fine. At this point I recommend it highly for vehicles that don't get driven much or have low capacity batteries to start.Instructions provided by the seller on the little "business card" are confusing. Do not follow them.It has 3 wires, red, black, white.Step 1. Connect the BLACK wire from this unit to your cars power feed into it. Most cars have a separate wire coming from the battery's positive lead that feeds the cars electrical system outside of the starting system. The main battery cable usually goes directly to the starter motor. You won't change that. You will disconnect the power feed (or cut it) from the battery and that will now go to the BLACK wire on this unit. (Be sure to insulate the lead left on the battery if there is one.)Step 2. Connect the red wire to the battery, 12+Step 3. Connect the WHITE wire to the battery's NEG (-) terminal. Yes, that's right, white to the negative post in the battery.To protect the unit, they should put a 30 amp fuse inline on the red wire. Their instructions do suggest that, but it says "optional" but I disagree. It would cost $1 to put a fuse holder with a 30 amp fuse on that line and it would protect the system.The first unit I connected it as convention, red battery, black ground, white to power and the thing blow up on me. Don't do that.I subsequently did go to the manuf. website and found less confusing instructions.The seller is replacing the one that popped no charge to me. The unit seems well made. After I hooked up the 2nd one it did work, but it popped the inline fuse that I put in it. I was testing the system so I left the dome light on. I also have 2 computers in the car and dashcam. What would happen is that if the unit went into protection mode and then came back, when it does so, it 'll send a surge thru the system. And that's what popped the fuse. I also tested my system during start up and with a ammeter looked inline, we saw a 16amp draw. So that's what popped the 15 amp fuse. Seller said it would be okay to put a 30 in there and that's what I'm doing. I'll update as needed.

This thing shuts off my battery bank if I draw too much power, like 180 - 220 watts, in about 2 minutes. Then reconnects the batteries after a few minutes. No charging required.When I'm drawing less than 100 watts, this LVD allows the battery bank to completely drain until the inverter shuts off due to low battery voltage. No amount of adjustments seems to work. Not 0, not 9, not 8.....Setting 0 = Disconnect, and is the default setting and the LVD was sending power to my inverter.I was going to try their 30A LVD, but decided to get the Energy Core Products LVD (from Amazon), which does shut off the battery bank at the set voltage.I'll keep the Galley Power LVD due to the one positive thing it does do.Update: April 9 2017Galley Power responded to my first review and took the unit back and sent out a the flush model. They also informed me of the status ofthe unit and what I had wrong and troubleshooted the LVD.New Review:Default is 5, not 0. This means the unit would not have shut off before the inverter because I had it set to 4 and not 9.Problem 1: Why would the default disconnect be set to 10.5 volts if the reason for this device is to prevent draining the battery?Problem 2: This information could easily be included in the install guide.Dial issue 1: The dial is very small, and the setting numbers are hard to see and the arrow is also hard to see. Screwdriver required to make adjustments is the type used for eyeglasses.Dial issue 2: Once my first setting did not work, I turned the dial all the way to the left, then all the way to the right and adjusted the dial back to the left (anti-clockwise) while the inverter was on to see where it shut off. I never got it to disconnect the batteries from the load (inverter) before setting 5 or lower or when I pulled too much power from the battery bank when it was set to 5.Device problem: According to Galley Power the reason the unit shut off was due to high temps and voltage overload protection. Therefore the unit can only be used as a backup in my environment. (Galley Power can correct me if I misunderstood their response)Number of stars:Galley Power response: 5 starsInstall guide: -1 starDial: -1 starOperation: -1 star (Can't take a star off if my environment is the issue)Total: 3 stars (increased by 1 star)

This is a great device so far! Have been running it for about three months and it survived sub-freezing temperatures for a few days just fine (as low as 12 degrees Fahrenheit). At a glance it doesn't look heavy duty but it has performed well with my devices pulling a bit over two amps continuously for about three months. After about 10 cloudy days it disconnected my network gear and cameras, and everything restarted once the batteries reached 13v again (I set it to disconnect at 12.1v - setting #9). This is definitely a battery saver for remote/unattended applications. I am running four flooded golf cart batteries and would hate to run them lower than 12v.Update June 2020 - the LVD is still doing great after over 3.5 years. Kept batteries in good shape (batteries are now about 4 years old). I hope to get another couple of years out of the batteries.

This product was delivered in time. The package comes with very good installation information by instructing website for datasheet and manual. Installation is simple and straightforward. The material is high quality. It has 8 voltage cut-off options. The flexibility is critical in my battery powered system. I did not check the efficiency but the module stays cool for continuous 10A load. So far so good. Will continue to update after months of operation.

This is just the thing I was looking for to prevent the Roku I have installed in our van from running down the battery if it hasn't been driven in a couple days. Working like a charm so far.

Bought for use with my electric cooler. So far working great and I soldered it inline with TireTek 14 gauge 15' Cigarette lighter extension also bought on Amazon; we will see during the real test this weekend how well it works and if it saves my battery while keeping my cooler running.