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> Hardware & Accessories > Wires & Plugs > Battery/ESC/Motor Connectors
> Chargers & Accessories > Accessories
> Airsoft & Accessories > Charger & Plugs & Miscellaneous > Plugs & Adapters
> Batteries & Accessories > Cell Checkers/ Low Voltage Indicators


On Board Lipoly Low Voltage Alarm (2s~4s)

On Board Lipoly Low Voltage Alarm (2s~4s)

Simple to use Lipoly low voltage alarm that is small and light for on board use, plug's into balance lead for detecting low voltage on individual cells. A loud alarm will sound and LED will change from Green to Red if any individual cell drops to 3.3v or below.

Lipoly Range: 2s~4s                              
Size: 38x25x11mm  
Weight: 7g
Voltage Accuracy: 0.03v
Low Voltage Alarm Threshold: 3.3v (per cell)


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Weight: 10g
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Price $2.15

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 Customer rated
Total of 179 discussions.
Bienvenido  19 points - 9/13/2014
No duden en comprarlo, a mi ya me salvo varias baterí*as, por que cuando me inicie enel hobby pense que las lipos lo podí*as usar como las niquel...depues de leer sobre manuales de baterí*as me enteré* que las lipos no deven ser descargadasen su ttotalidad. ...pero como saberlo?? Si el avion esta en el aire....pues HK tenia la solucion...este aparatitoooo era la solucion, tiene un sonido que se escucha a leguas aparte de las luces leds. No dude compre y coloquelas a cada baterí*a.
 EstebanT 636 points
I agree. I use it in my plane too, and it works very fine. Regards! - (SPANISH: Estoy de acuerdo. Yo tambien lo uso en mi avion y funciona muy bien. Saludos!)
 Bienvenido 19 points
Si, ayuda a la larga vida de nuestras baterí*as!!
Fisiotre-sa Luca  10 points - 7/18/2014
hello, I use it for my lypo 3s but it always does buzz and red light even if the battery is full charged. is there just only one way to use it?
 Andrey 242 points
If it does not stop to buzz 1 sec after you plug it in, make sure you plug it right (black wire to minus)
 Fisiotre-sa Luca 10 points
got it, thanks! I was supposed to be more patient. three second from red to green lights
temenator  3 points - 6/24/2014
The last three of them broke down after a week. Low quality :(
 contact303 225 points
Ur nto the 1st to say people report the buzzers stop working after a week . I myself have 2 and they work flawless ?? Crashed a few times even and flew off ..
 temenator 3 points
purchased two years ago to work perfectly. All purchased over the last year broke. The primary symptoms only work with 3S batteries, 4S constantly alert for low voltage.
 Matthew 214 points
I have 4 of these from the past 3 years, all still work flawlessly. I guess you got a bad one, it's bound to happen when these guys make 1000's of them per week. Carry on!
Max Headspeed  7 points - 6/12/2014
Is the audio alarm supposed to keep on sounding off as long as the red LEDs are lit, or does it go of after a certain time even if the low voltage LEDs stay on? If you attach this device, or any of the other similar HK devices to a discharged battery and all of the red LEDs are on, the alarm sounds momentarily then goes sillent, but the LEDs are still red. Is this normal?
 Andrey 242 points
The leds and the alarm are being activated at different voltage (first the leds go red and later the alarms starts to beep, the difference in time depends on how hard you push on your battery, sometimes you hear the alarm, you land, and as you turn your motor off, the alarm stops...)
 jzzto 375 points
i believe so, when you plug it, it will buzz. then, if the battery is charged correctly, it will no buzz any more until the battery goes to low voltage. first it will turn on the leds and then when voltage drops even more it will buzz until you unplug it or the battery dies (whatever comes first)
Blue_Rocket  413 points - 6/10/2014
Is there a chance to set the voltage alarm? Beneeth 3,3V is very low!!!!
 AlbEagle007 552 points
I don't think you can change the values.
 Gerry01 4474 points
Not on this alarm. You need something like , "Hobbyking 2-8S Cell Checker with Low Voltage Alarm". With that model you can set the voltage level.
 Gerry01 4474 points
Thanks for the credit!
Customer Reviews
Overall Rating
1 thumbs up!
4 Stück gekauft, wurden vom Zoll beschlagnahmt weil das CE-Zeichen fehlt. HobbyKing leistet keinen Ersatz und fühlt sich nicht zuständig.

11 comments. Reply..

Overall Rating
Markus B.
Like it?
I love this smal alarm system. Easy to fit and very safe. After connetion, it check every cell of your Lipo and the horn will be activated for a second. It is very loud and a nice working tool for more saftey.

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very godd poduct!!!!

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Like it?
model arac kullananlar icin gerekli bir ürün

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Like it?
What a very good idea for plane.

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