Actobotics Low Voltage Cutoff Switch


Sometimes a product comes along that is so simple that I say “Why didn’t I think of that?”, and you know what? I said it again today! Actobotics has released a new Low Voltage Cutoff Switch that’s so easy to use, and can be used in lots of applications! Interested? Well, you SHOULD be! This little switch is really cool! Read on to get the low-down….


Name:   Actobotics Low Voltage Cutoff Switch

Where to get it:

Price:   $19.99

Weight:   0.35 oz

Max Voltage:   15Volts

Max Peak Current:   15A @ 3V / 20A @ 6V / 20A @ 9V

Max Continuous Current:   10A @ 3V / 15A @ 6V / 15A @ 9V

Current Drain (On):   3mA @ 3V / 8mA @ 6V / 15mA @ 9V

Current Drain (Off):   1mA @ 3V / 2.5mA @ 6V / 5mA @ 9V

First Look

The Low Voltage Cutoff Switch (LVCS as I will refer to it as from now on) arrived simply packaged in a pink bag with a label, which was plenty of packing for the product! Included in the bag was the LVCS, a jumper, and a pair of wire connections that can be soldered to the LVCS.

The LVCS itself is comprised of mainly surface-mounted components, with just the jumper pins soldered through the board to add strength to the pins. It really is a good looking little switch! Speaking of little, it weighs just over one-third of an ounce, and is 1.25″ square. It will fit nearly anywhere you want! There’s four mounting holes – one in each corner, and four soldering holes to add the screw-down wire connectors.

Some Minor Assembly…

Because I decided I want the LVCS to be movable between applications, I will be soldering the screw-down wire connectors to the LVCS. In order to do that, I gathered my trusty tools. I like to use my “third hand” tool, along with a soldering iron, and iron holder. The solder I’m going to use is a 40/60 rosin core solder, and it does contain lead. The flux is a simple paste flux that I use for all types of soldering. (Reviewer’s Note – If you’re planning to leave the LVCS permanently in one place, you can solder your power wires directly to the board.)

With the “third hand” holding the LVCS, I applied a little flux paste to the holes and connector pins, and soldered the connectors to the board. A good, hot iron makes this an easy job! With that, the LVCS was read to be installed, which you can see in the video below!



I really like this product – It’s going to make it easy to run a lot of items on a LiPo that were not originally intended to be run on newer battery technology. Watch your voltages though – while the LVCS will monitor the low end, you’ll still want to be sure that that whatever you’re powering can handle a higher voltage from LiPo batteries. This little switch is really cool, and I can think of a lot of uses for it – as I mentioned in the video, I’d recommend NOT using it in an RC aircraft, because once the Voltage is cut, you have no power. I’d really hate to have THAT happen when I’m flying…  That’s all for now – Thanks for reading my review! -GB


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  1. At $20.00 + shipping for an RC car you could buy a cheap brushed motor controller that has low voltage cutoff built into it. Then you don’t have the extra wiring and the extra exposed board laying about in the vehicle. It still has a draw when it is off which will kill a Li-Po if left connected, and we all know about kids forgetting and leaving their batteries connected in the RC when they are done playing (if they remember to turn it off). I would connect it in line with the motor so when you shut the ESC down it won’t cause any additional draw (once your RC can’t move it will be time to shut down). In that way it sounds good, although it would be nice to have a sealed box around it to protect it. Looking good for arduino and robotics projects too. I wish it were a bit smaller being as it is larger than most receivers, but I might get one to test with the Li-Ion conversions that I am doing with some power tools.

  2. Can’t be used on aircraft. Can’t be used on high current motors. Can’t be used on boats unless you want to go swimming. Seems pretty useless to me.

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