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Lipo alarm buzzer sound mostly all shot

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Old December 22nd, 2015, 23:54   #1
DarkJTF
 
Join Date: Oct 2015
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Lipo alarm buzzer sound mostly all shot

Gun is a G&G GC1-46 with around 5000 bb's shot

Just replace all the wiring for a MOSFET unit with low resistance wire for run new 11.1 V lipo 20C

Run with with a cheap Lipo alarm

Motor come warm and the buzzer sound often with a freshly recharge lipo. Someone can give advise please ?
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Old December 23rd, 2015, 00:42   #2
DarkJTF
 
Join Date: Oct 2015
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Update : Just try the lipo into my sidekick, a non-lipo ready gun and the buzzer still sound. I suspect the buzzer to be defect, but still concern about my warm motor.

It's too late this evening to try it more, I'll awake all the neiborhood if I continu
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Old December 23rd, 2015, 00:58   #3
Wrath144
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The voltage drop caused by energizing the motor is making the lipo alarm think its dead.
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Old December 23rd, 2015, 09:12   #4
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Yeah seemes like a lower end or depleted battery and a high drain setup. Every cycle is almost too much for the battery.
Also most mosfets will have low voltage cutoff so the alarm isn't needed.
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Old December 23rd, 2015, 09:21   #5
lurkingknight
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Originally Posted by Hectic View Post
Also most mosfets will have low voltage cutoff so the alarm isn't needed.
this is wrong.

Only computerized units with fire controllers MAY have this feature. Basic units with just a mosfet will only provide circuit protection, nothing else.
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Old December 23rd, 2015, 15:41   #6
DarkJTF
 
Join Date: Oct 2015
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I have only the mosfet transistor, not the computerized one. But the lipo buzzer sound on my fun, Just got a new lipo today, I'll put a dean connector on it soon and try with this one
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Old December 23rd, 2015, 15:45   #7
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The issue is voltage sag. All batteries suffer from it to differing degrees. The problem with Li-Po alarms is they beep as soon as the voltage drops below a certain threshold, even though once the battery stops supplying power, the voltage goes back up to well above the threshold.
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Old December 23rd, 2015, 16:15   #8
DarkJTF
 
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So I must throw this lipo alarm shit away ?
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Old December 23rd, 2015, 16:17   #9
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Li-Po alarms are generally bad. If the beeping bothers you, don't use it. Otherwise, you can use the battery until the beep is continuous.
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Old December 23rd, 2015, 16:45   #10
DarkJTF
 
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I will probably let it attach to the battery and test it with it when I suspect a discharge. Ths bip is loud and not streathly
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Old December 23rd, 2015, 18:46   #11
lurkingknight
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some would argue you need more mah on the batteries... sagging voltage even if your gun is working properly can damage the lipos.
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Old December 23rd, 2015, 18:53   #12
Kos-Mos
 
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Good alarms are adjustable, the one you got most likely beeps at 3.3v. You can safely set it to 3.1v in an airsoft gun, but make sure to stop at the first beep.
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Old June 29th, 2022, 03:27   #13
fabricforefoot
 
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Voltage sag is the problem. It affects all batteries to varying degrees. Unfortunately, Li-Po warnings sound as soon as the voltage falls below a predetermined threshold, even if the voltage rises quickly after the battery stops producing power.


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