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Battery Voltage Meter Tester Battery Monitor Buzzer Alarm For 1S-8S Lipo Battery

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$10.99 /$13.41
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    $4.99 /$13.41
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    Description:


    1. Brand New & High Quality.

    2. Use for 1-8s Lipl/Li-ion/LiMn/Li-Fe.
    Voltage detection pricision: 0.01V.
    Unit voltage display range: 0.5V-4.5V.
    Total voltage display range: 0.5V-36V.
    1S test mode voltage range: 3.7v-30v.
    Low voltage alarm mode for 2-8S.
    Alarm set value range: OFF-2.7V-3.7V.
    3. When the voltage is below the set value,it will buzzer with red LED light,pre-set value 3.3V.
    4. Push key which can change the voltage settings and save.
    5. Size: 3.9cm x 2.4cm x 0.9cm.
    Appliable for: RC Quadcopter, helicopter, multicopter,car,boat and airplane,1S-8S / Lipo / Li-ion / Li Mn / Li-Fe battery.

    Features:
    -This product is using for detecting 1S-8S lithium battery
    -Detect the voltage of each battery core automatically, support reverse connection protection.-To know the working state of your battery anytime, protect the battery from overcharge and over discharge.-The red LED will flash,the buzzer will beeping when the voltage is below the set point.-The factory default setting is 3.3V, press the button to change the voltage setting, and it will save your current setting automatically.

    Package Included:
    1 x Voltage Buzzer Alarm

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    Customer Reviews

    4.90 out of 5
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    • Shane VIP1
      14/10/2012

      Well designed. The alarm is quite loud. It beeps twice when you plug in your battery. I hold my meaty finger over the buzzer to muffle it so I don't startle everybody around me. You can adjust the voltage at which the alarm goes off, which is just fantastic. Instructions for making the adjustment are printed in tiny tiny lettering on the back. The display is very bright, easily visible from short distance depending on your eye sight. The display cycles between showing the total voltage of your battery pack, then each individual cell. The display changes too quickly for my liking. It measures 39 x 25 x 11 mm, and weights 9.6, lets say 10 grams, which should be no problem for an under-powered 4-channel 400 size helicopter and probably still manageable for a 200. If they used smaller 7-segment LEDs, a single buzzer, and it only had the ability to read 1S to 4S packs, it could be a third of the weight. There is very little to complain about.I bought 3 of them - should have bought 12!

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    • Goran
      07/11/2013

      Save the LiPo battery with cut-off manually, when this device alarm. You can set the switching level for arming from 2.7V to 3.8V step 0.1V... Display voltage of any cell, and the total voltage of battery. The buzzer is loud, you can hear good from 100-200m on electric planes, and you can hear the overdischarged receiver battery alarm on gas/glow plane.

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      • 0
        Q: weight?
        A:
        About 10g.
        Answered by Yesterdaywas on 21/02/2018Helpful (0)
      • 0
        Q: Have they corrected the default alarm of 3.3v yet?
        A:
        Idon know, I haven received it yet, this is my first time buying.
        Answered by BG211321162 on 12/05/2025Helpful (0)
      • 0
        Q: My item beeps and shows 0.00 when I plug into my battery? All of my batterieseries in fact. They are working fine and no other voltage alarm comes up with an error. Any idea why
        A:
        Unfortunately, no.
        Answered by RuiGood on 10/03/2024Helpful (0)
      • 0
        Q: Hello Does it exist in a version for 10S 42v? I didn’t found that. Thank you for your response, Éric
        A:
        Idon know, I haven received it yet, this is my first time buying.
        Answered by BG211321162 on 12/05/2025Helpful (0)
      • 0
        Q: I understand that this device beeps as soon as the voltage of one of the connected LiPo cells goes under the threshold voltage value. Question: Does beeping stop when the cell voltage recovers to a value above the threshold voltage (e.g. when I reduce motor power)?
        A:
        The buzzer is to to warn you when airborne because you cannot see the display. It would be pointless in the pit area where you can look at the readings. Maybe for blind people? I have several similar units and they all stop buzzing once the voltage recovers.
        Answered by meanderboy on 03/02/2022Helpful (0)
      • 0
        Q: can i desolder the beeper and connect this to my fc as Buzzer Alert?????
        A:
        if i understand well than the answer is no, if i understand you bad than better idea to buy a buzzler dude.
        Answered by Janaj on 25/09/2018Helpful (0)
      • 0
        Q: Mine was working but the voltage readings were not well calibrated. I tried to see if there was a way to calibrate by doing a long press of the top button (20 seconds). Now all voltage readings are stuck at 0.00 volts. Does anybody know how to fix this and what a long press is supposed to do?
        A:
        Try long press and then short press to set. I think this is the alarm menu where you can set the alarm voltage.
        Answered by crtzorko on 02/11/2021Helpful (0)
      • 0
        Q: will this work with a echine wizard x220 and if it does what will I need to mske it work? I'm obviously new to quads
        A:
        I don't know, I haven't received it yet, this is my first time buying.
        Answered by BG211321162 on 12/05/2025Helpful (0)
      • 0
        Q: I want to set mine to alarm at 3.65 volts how do i do this? mine seems to only advance 3.4, 3.5, 3.6, 3.7 ect. … with each button press ???
        A:
        As I understand it, these are preset and the only options.
        Answered by BG948251318 on 29/12/2022Helpful (0)
      • 0
        Q: Does it work for NiMH battery ?
        A:
        In theory, yes it will but you have neglected to say how many cells you would be using!
        Answered by BG948251318 on 22/03/2022Helpful (0)
      • 0
        Q: Can you hook this up in line with the battery at the same time so while you're flying your quad you hear the alarm real time instead of having to land and check your battery?
        A:
        yes, plug it into the balance lead and fly
        Answered by raivis11 on 07/02/2022Helpful (0)
      • 0
        Q: 제품이 도착안했습니다
        A:
        They are in stock now.
        Answered by Hirsute on 31/10/2018Helpful (0)
      • 0
        Q: absolute junk, bought 2, one died in 2 days, other gives wrong readings, you've been warned!
        A:
        Bought 3 all Working After half year
        Answered by Nicoman10 on 21/08/2018Helpful (0)
      • 0
        Q: esse marcador ser para as baterias do helicóptero v912
        A:
        it can work with v912 battery
        Answered by Kudos on 22/01/2018Helpful (0)
      • 0
        Q: does it alarm you via single cell voltage check or via total voltage?
        A:
        Thisdevice checks single cell voltages one after another with a 1 second delay. Each single cell voltage is displayed for one second. If this single cell voltage is below the treshold, additionally it makes a loud sound and starts blinking. The sound remains way longer than one second, so nobody could miss it.
        Answered by BG494845711 on 24/08/2020Helpful (0)
      • 0
        Q: Hey! I just wanna know why you need this for lipos. New to the hobby. Thanks in advance!
        A:
        lipo batteries should never go under 3.0 Volt so this device is perfect to check the voltage and beeps if one or more cells are to low.
        Answered by Kimiplayboy on 12/11/2019Helpful (0)
      • 0
        Q: Is it possible to beep when ANY of the cells drops below minimum? Not combined cells. I don't really care about total battery voltage, if one of the cells is getting WAY below minimum and destroys itself while the complete battery voltage is still healthy...
        A:
        It checks INDIVIDUAL cell voltages, and the alarm starts when ANY of the cells is under the voltage threshold. You should have read the other questions, as this has already been answered previously.
        Answered by Coops on 13/10/2020Helpful (0)
      • 0
        Q: hello out there people! im just wondering my tester doesn't beep hardly at all when testing a 1s battery! is that because not enough juice to make beep?
        A:
        This device does NOT have an alarm for 1S Battery. It is alarm only for 2S and higher. Read the product description and read the sticker on the rear of the device to confirm this.
        Answered by Coops on 13/10/2020Helpful (0)
      • 0
        Q: How do you change the voltage at which want the buzzer to trigger at?
        A:
        Hisfviolinist2021, There is a small press button on the back of the device which when pressed changes the voltage level you require.
        Answered by dermo on 02/04/2020Helpful (0)
      • 0
        Q: Does this model stop beeping when the voltage goes over the limit set or stay enabled? I ask because I have both models and I look for the one who stops beeping when voltage goes over limit.
        A:
        The one I got, starts beeping when battery drops below set limit, but it doesn't stop when you cut throttle and battery voltage raises over the limit. It just goes on beeping.
        Answered by ilias on 07/10/2018Helpful (0)

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