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 ?

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

The voltage drop caused by energizing the motor is making the lipo alarm think its dead.

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.

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.

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

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.

So I must throw this lipo alarm shit away ?

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.

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

some would argue you need more mah on the batteries... sagging voltage even if your gun is working properly can damage the lipos.

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.