Hobby King Battery Monitor 4S

 Mirna 9 points

You can connect this to other packs, just keep on mind that you always have connected red with red, and black with black wire no matter how much pins are on the connector.Also you can buy some additional balancing plans which will have enough pins for your battery pack, since this monitor comes with unsoldered wires it only makes your job easier *)

 genrlst 19 points

this does not come with the connector that's in the picture?

 supermotostar 29 points

According to manual 14.8-13.6V blue light flashes, 13.6-13.2V red light shines, below 13.2V red light flash and beep.
If under load, voltage stays under 13.2V for 5seconds, red light and beeper won't stop until monitor is disconected.

 Willmax 36 points

il sonne avant que le controleur coupe!!!!

it tolls before the esc cut!!

 Helilover 100 points

not bad at all

 Turbobeaver 1350 points

These units plug into the balance tap of your lipo's so each battery should really have its own monitoring system to play it 100% safe.

 rmadden 26 points

so i should get 2-2s buzzers then? even tho im running them in series?

 1st heli 159 points

u could go either way. these only measure total voltage of both/packs. I solder - to the ESC wires.

 Charlesd 746 points

If you have 2 of the same spec battery then you should have 2 JST connector from your batteries. Therefore you will have to purchase QTY-2. Granted that these battery would drain at the sametime. But what ever.. If one happens to buzzer first, you should still bring down you Jet/plane/Heli..

 martiman 175 points

You will need one monitor per battery.

 Willmax 36 points

il va prendre qu un acus je pense

 Helilover 100 points

yes u can use this in there

 Sam-Q 31 points

it gives a buzzing alert when the pack voltage goes to low to avoid cell damage

 martiman 175 points

Tells you when you're lipo needs to be recharged.

 SanTsom 8 points

It will sound out an alarm and flash a light when voltage of a LiPo get too low.

 Helilover 100 points

makes loud noise when the lipo battery is low

 martiman 175 points

Use a pointed tip, tin the wires and the connector s and solder together. Shouldn' last more than 2 seconds. Don't forget to insert some shrink wrap to insuoate the wires once you're done.

 Gravitywinsagain 33 points

The big trick is learning how to "tin" the pin ends, I usually put a little "flux" on the items i wish to solder, then i pick up some solder on the tip of a soldering pen and quickly brush the flux with the tip of the soldering iron. With that done, place the wire on the tinned pin, and touch the wire with the soldering iron until the solder flows 1/2 sec- 1 sec. let cool and do the next one. hope that helps

 thunderchicken 90 points

do it quickly with a small iron . had no prob with butane pocket iron .

 Carlo 21 points

Met een fijne soldeerbout lukt het goed. Wat nog beter resulttat geeft is dat je de te solderen fiche in een stekker steekt dan blijven de contacten op zijn plaats zitten.

 marinbuck 34 points

Remove the pin from the plastic plug, and then reinstall it when it is soldered.

 Turbobeaver 1350 points

Make sure that the 3 center pins are either individually insulated with heat shrink to prevent any possibility of shorting out or simply remove the 3 center pins as they are not required to run this device anyways.As an extra precaution,you might want to add heat shrink to the hole connector and back behind by about an inch as well.This gives you something to hold onto when plugging and unplugging and prevents you from accidentally tugging on the rather fragile wires and their soldering joints.I've done this with all of my lipo alarms and it works like a treat.

 martiman 175 points

Very quickly! 1-2 seconds.

 SanTsom 8 points

Use a low temp. solder.

 Helilover 100 points

Just use the slap and rubber method to solder it at very low heat

 RichT 123 points

It would, no problem. It only senses the voltage of batteries it is connected to (not the chemistry *).

 jej500 36 points

yes, it is only for lipo batteries!

 martiman 175 points

This was specifically designed for lipo . . . so No, you can't use them for anything else.

 Gravitywinsagain 33 points

This is limited to useful functionality of lipo. Sorry. It doesn't mean it can't be used with other load types, they just don't go bad at 3v per cell.

 turkeylord 35 points

I wish they would post the manual, but it looks like it's designed to monitor just one of the cells for a 3v cutoff, and just assume the other cells are the same. if that's the case, you could wire it up with 12 (.7v) diodes in series to let you know when your 12v battery drops below 11.4V.

Can someone confirm the wiring? Do they say to solder to the outermost pins, or two adjacent pins?

 martiman 175 points

This device is just to give the user a visual warning of the total pack voltage whether it's 2S or more.
The way this works is that it counts the total pack voltage and works on that. (SO yes, you solder at the outermost pins for wiring). Now, if you have a 2S pack - then it starts giving out warnings when the pack reaches 6.6V (blue light blinking), and so on. If your pack reaches 6V - it starts blinking red and gives out an audible warning tone. I may not be accurate on my warning description but you get the point.

So to be safe, when it starts blinking blue - then you know you're close to your LV threshold - time to bring her in.

If you want something better, then get a Low Voltage (LV) cutoff device like Novak Smart Stop - although it still has it's issues.

 Carlo 21 points

Dit werkt enkel op lipo batterijen

 Helilover 100 points

It will work with any battery with the required amount of volts

 vito357si 126 points

I use 2 2s maxpro battery monitor on my e-revo that way if one lipo drains faster you can tell. You can also use the 4s if you don't want to buy 2 2s monitors.

 martiman 175 points

It's designed to monitor lipo battery voltage . . . nothing else.. It has nothing to do with your motor

 Helilover 100 points

yes it would.