Charger Displays

[Sqwidge]

I have a lipo charger but as usual the instructions are not very clear, just wondering id anyone can tell me what the bits i dont get mean.

Li3s = Number of cells and type of battery
0.1a = Amount of amps being used to charge battery
12.60V = amount of power in Volts in said battery
Bal = Balance program in use
91:38 = Amount of time passed whilst charging
00793 = ??????????????????

anyone know what the last one is?

[robgt]

Milliamps (mAh) put into the pack?

Cheers,
Rob

[Sqwidge]

ahhh makes sense now, cheers rob

[cjcj1949]

I have a lipo charger but as usual the instructions are not very clear, just wondering id anyone can tell me what the bits i dont get mean.

Li3s = Number of cells and type of battery
0.1a = Amount of amps being used to charge battery
12.60V = amount of power in Volts in said battery
Bal = Balance program in use
91:38 = Amount of time passed whilst charging
00793 = ??????????????????

anyone know what the last one is?

To avoid confusion volts isn't power. Power is measured in bhp or watts. The more watts or bhp the better your acceleration.750 watts is about one bhp.

Volts is more like force. A 12volt battery will have twice the force of a 6volt battery. A 3 cell lipo will start out with 12.6 volts and can be used down to 9volts or so. A motor will give a certain number of revs for every volt across it. A motor that gives 1000 rpm at 1volt would give 9000 rpm at 9volts and 12,600 at 12.6volts.

As Rob says the 793 is probably mah. That is on average you have put 793 ma in for 1 hour or the equivalent. It's average current in milliamps times the time in hours.

Chris

[zoombolt]

Sqwidge
If you take the mAh of your battery just recharged. Say a 3 cell 1800mah. Whack 1800 in a calculator, times say 56%, then hit the - (minus) sign, then equals sign. It'll give you the figure pretty close to what the reader on your charger states.

So on your last flight, you discharged 56% out of your battery pack, cuz that's what you had to put in to fill it up again. It lets you see how close to the magic 80%-20% discharge rate your at.

The correct % takes a bit of finding at times, but it's worth the effort & a good tool to have IMO.

[Guest]

Sqwidge
If you take the mAh of your battery just recharged. Say a 3 cell 1800mah. Whack 1800 in a calculator, times say 56%, then hit the - (minus) sign, then equals sign. It'll give you the figure pretty close to what the reader on your charger states.

So on your last flight, you discharged 56% out of your battery pack, cuz that's what you had to put in to fill it up again. It lets you see how close to the magic 80%-20% discharge rate your at.

The correct % takes a bit of finding at times, but it's worth the effort & a good tool to have IMO.

I just spent a couple of mins to make quick ref table if its of any use Hope its right!

[zoombolt]

I just spent a couple of mins to make quick ref table if its of any use Hope its right!

Now that's a useful looking chart Jack. Would've taken me more than a couple of minutes too!!!!
I'm sure many will use it too.

[Sqwidge]

That graph is awesome lol ive saved it to desktop, very clear and shows on my new lipo i only used 46% before i had to charge it, i dont understand a lot of the maths behind heli's but stuff like this certainly helps

[Guest]

Glad its useful. I may develop it a bit so you can just stick your reading in and get a percentage.

[Sqwidge]

its good as it is if i get a figure that isnt on there i will just round it up to be safe, thankyou for this, i think if you were to mod it you should try a time scale for those who time their flights, so say if they flew for 4 and half mins then they could use your chart to see what they used and to detect any differences in usage given the same amount of time over a set period.
or is that too much lol

[Guest]

its good as it is if i get a figure that isnt on there i will just round it up to be safe, thankyou for this, i think if you were to mod it you should try a time scale for those who time their flights, so say if they flew for 4 and half mins then they could use your chart to see what they used and to detect any differences in usage given the same amount of time over a set period.
or is that too much lol

Should be fine, I think LOL. Have spent all day using excel - may as well do something useful with it now.

[zoombolt]

Glad its useful. I may develop it a bit so you can just stick your reading in and get a percentage.

I like that idea Jack.

[163phil]

Nice idea guys, but there are a few more variables to put in if you want to put in a time and get out percentage of battery used, such as motor kV, pinion size, throttle curve, flying style (hovering, sport or 3D) etc etc

You can have some fun building a spreadsheet for that, and I'm sure many will use it

[zoombolt]

Nice idea guys, but there are a few more variables to put in if you want to put in a time and get out percentage of battery used, such as motor kV, pinion size, throttle curve, flying style (hovering, sport or 3D) etc etc

You can have some fun building a spreadsheet for that, and I'm sure many will use it

To be fair, I think that's asking too much of a spread sheet. I know very little about the little buggers, but individual motor, pinion, curves & flying styles has got to be individual & can't be generic?

To have a simple indicator, as intended as a response to the initial question, that helps find the % used out of your battery while comparing it to the ????numbers shown on a charger hits the mark, don't you think?

[163phil]

To have a simple indicator, as intended as a response to the initial question, that helps find the % used out of your battery while comparing it to the ????numbers shown on a charger hits the mark, don't you think?

Absolutely

Go for it Jack, that would be very useful

(I did make the comment tongue-in-cheek, but there doesn't seem to be a smilie for that, and it probably didn't come across that way in writing)