woafly LHI 2 in 1 RC 2-8s Lipo Li-ion LiMn Li-Fe Battery Checker with Low Voltage Buzzer Alarm and LED Indicator 5pcs

These work great! Bargain Price, too! I, and many other flyers of RC model airplanes in my club, use these as both a quick checker of the voltage for all my various sizes of LiPo batteries AND as a low voltage battery alarm in every RC plane I fly ... I set the low voltage alarm at 3.5 volts and I get maximum flight tikes before it very loud, high-pitched alarm sounds telling me it is time to land. for the alarm, I plug it in the balancing lead that is on each of my RC airplane batteries. Love these thing!

I got tired of using my DMM to measure cells. I haven't tested the accuracy or ever single one, but the one I used works fine. Probably not completely accurate but close enough for field checking your batteries or alarming you when you've reached the per cell voltage threshold you set. IIRC it's between 2.3 or 3.8 that you can set the alarm. One is super loud for alarm, the other is stupid quiet. I'm not sure if that's intentional or not, but that's how mine works.I'm happy with these. 3 set aside to have as backups, one in the field kit and one in the charge box. Makes life easier.

Seems to work OK. One unit was a little sketchy ( wouldn't light up all the way and show the voltage) on a single cell Lipo battery that was at about 3.77 volts, measured with one of the working units. Haven't tried all of the units yet. If not for this issue, I would give it 5 stars.

These were a bit bigger than I expected, but they work incredibly well! The pin spacing was too large for an older lipo battery I had, but these fit all of my newer lipo batts just fine.Literally just plug it in for basic use. It beeps, then displays number of cells, then displays total voltage followed by voltage for each cell. The buzzer is pretty loud too. I haven't been able to test the low voltage alarm yet, but I will soon.Also, units weigh in at about 8.5-9 grams each. See photos.

Not accurate.I am glad that I had a CellLog 8m to compare these too. The voltages are not accurate and I have tested them on several packs.CellLog8M readings (7s pack) --> 26.11 (total): 3.71, 3.71, 3.77, 3.75, 3.77, 3.69, 3.69LHI Alarm readings (7s pack) --> 30.5 (total): 3.71, 3.72, 3.74, 3.71, 3.72, 3.72, 8.28Please be very careful with these

Works ok for the 2S and 4S packs that I own and have made. The voltage accuracy is .1 to .2 volts off per cell when compared with my voltmeter, but not that important to me since I do not run my packs all the way down. However, I made a 7S battery pack for a UPS and the voltage of the 7th cell is not accurate. It keeps showing 6.98v when the last 2 cells do not add up to that value and I do not know where the value is coming from. This monitor is good for most hobby applications, but does not seem to be at all accurate for 7S packs.Unless you have this installed in an RC car that is away from you, the alarm is VERY loud. I use these as a voltage monitor alarm while I am in the same room indoors as the battery I am monitoring. I have taken a few and filled the alarm ports with hot glue. This way I still get an alert without the ear piercing tone.

I ordered 4 of these from China a few months ago. 1 of the four didn't work. So there goes the bargain a no recourse for replacing the defective itemThese came on time and all 5 r working. I'd recommend this product for price, quality and seller.

It may be the worlds greatest, but there is no way to tell since it came with NO instructions on how to hook it up or use it. Otherwise it might have gotten five stars - who knows? At least it arrived on time!

Good and inexpensive.

L’affichage de la tension totale ne se fait que sur 2 digits au lieu de 3. Le digit le plus à gauche ne servant à rien.Le buzzer retentit lorsque la tension baisse au dessous du seuil programmé mais ne s’arrete pas lorsque la tension remonte. Ce fonctionnement n’est pas celui de mes précédents buzzer et ne correspond pas à ce que j’attendais.

Componente conosciuto, mostra voltaggio di ogni si gola cella ed il totale, si può imposare l'allarme buzzer tra un valore a piacimento (non ricordo bene il range ma è <3 e >4 volt cella) pigiando un pulsanti o che mostra variazioni incrementali.

Najssola

acquistato questo kit per controllare le batterie lipo dei miei modelli aerei... comprato questo kit per quantità e prezzo.... devo fare una nota negativa perché facendo il test della batteria lipo i valori di ogni check è diverso l'uno dall'altro (+/- 0.4 volt)Sconsigliato per chi è molto pignolo!! 🙄spedizione amazon impeccabile