ESR / IR Meter fo Lipos - Page 17 - RC Groups
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Nov 25, 2011, 09:04 AM
This is a cool thread, guys. But then, you already knew that. I don't understand why everybody that flys electric, which is abunchafolks, aren't really into this. I've had to stumble onto the fact that Gens Ace is turning out some really nice products, and that Nano-Tech is not what I expected it to be from flight experience and subjective things like "those Gens Ace packs are hard as a brick", which probably has nothing to do with IR (taking a breath).

I still have to work through this thread from the beginning to see what's already been covered. An immediate question from the last 3 or 4 pages is "what characteristic of a LiPo pack makes it a Tx pack? I know that it has a different connector to fit into the Tx, but otherwise, why do they seem to be low-end packs priced expensively? And do they really come with a serial fuse in line?
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Nov 25, 2011, 10:55 AM
Skint since 2000
ghost2212's Avatar
I'm lookkng forward to getting oen of these and analysin my Lipo collection which are almost all turnigy both regular and some nanotech, I'm plannign to pick up some Gens Ace for my 450 and it helps that theres a uk distributor now

Please Pm me when there available Wayne, The monye is waiting
Nov 30, 2011, 08:09 AM
Registered User
Aviefly's Avatar
Any news yet Wayne? It's pay day
Nov 30, 2011, 08:50 AM
Registered User

Nearly ready - will post in the next few days.
Have sent you a PM.

Nov 30, 2011, 01:23 PM
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Aviefly's Avatar
Thanks Wayne responded and looking forward to it
Dec 02, 2011, 09:21 AM
Registered User
I have used your meter for awhile now, and I love it. I have a lot of electrics, and this is an important tool. It has paid for itself many times over.

Some of the guys in my club are interested in a group order. Do you have about six in stock yet?
Dec 02, 2011, 01:27 PM
It's all fun till Crunch!
Capt. Crunch's Avatar

Can't get order or get hold of;

Originally Posted by mrforsyth
David is the US distro for Wayne's awesome little gadget.

Billing page on web site doesn't work, doesn't answer the phone.

David just called, all OK now.
Last edited by Capt. Crunch; Dec 02, 2011 at 01:38 PM.
Dec 02, 2011, 04:51 PM
Registered User
Originally Posted by tclaridge
I have used your meter for awhile now, and I love it. I have a lot of electrics, and this is an important tool. It has paid for itself many times over.

Some of the guys in my club are interested in a group order. Do you have about six in stock yet?

Thanks for positive feedback; always pleased to hear that other people find it so useful.
Have sent a PM on the availability.

Dec 03, 2011, 08:18 AM
Registered User

I now have a small batch of the updated version of the meter completed and available. The new version is essentially the same as the original except for the automatic mode change from ‘Pack’ mode to ‘Cell’ mode when the search wire is inserted into the balance connector.
Accuracy and performance is unaffected and the unit is still protected against reverse connection on both power and search wire inputs whilst the unit is more convenient to use. A copy of the specification and instructions for use is attached as a Word document.
Despite my efforts to minimise costs, the price has had to increase although shipping costs have fallen slightly. The previous source of very cheap displays has disappeared and component costs have risen way ahead of inflation.
I am not intending to make any significant profits from the project as it is just a hobby, but it must at least break even. Obviously I am prejudiced but I believe that the information it produces for the serious flyer will more than return costs in separating the wheat from the chaff in the lipo world.
You can ignore the “C” rating on the pack and measure its real capability in a few seconds.

Prices are now:-

----------------------------US Dollars------UK Pounds------UK Pounds

Unit Price----------------$85.00------------£48.50----------£48.50

P&P + Insurance--------$14.00------------£3.90------------£6.20
---------------------(To USA + ROW)--------(To UK)--------To Europe)

Paypal please although I can take UK cheques.
Will be pleased to answer any questions.
PM me if you want one and I will return e-mail address

Last edited by Wayne Giles; Apr 02, 2015 at 04:18 PM. Reason: Price change in USD and Euros to compensate currency rates
Dec 03, 2011, 09:35 AM
Ignint McNugget
Rumple's Avatar
Nice improvement - I'm glad to see the pack/cell switch taken out.

My favorite tool in my box right now...
Dec 03, 2011, 10:19 AM
Registered User
ggroyal1117's Avatar
I ordered one today from ProgressiveRC. Thanks for developing this very useful tool. I am sure I will be checking a lot of LiPos
George Royal
Stone Mountain Radio Control Flyers (
Dec 03, 2011, 10:19 AM
Registered User

PM Sent

Looks like a very Merry Christmas
Dec 03, 2011, 11:44 AM
who dares wins
like2fly!'s Avatar
The best tool in my electric field box!
Dec 03, 2011, 12:49 PM
Registered User
Aviefly's Avatar
Got mine today, thanks Wayne.

I'm very impressed with the appearance and feel of the meter and the very easy operation. I love the fact that it is very cottage industry and not mass produced, the designer himself has sat there and built them by hand and then calibrated each individual one, that in itself is worth the money to me.

When I got out to the shed the first thing I did was change the Deans connector to my chosen 4mm gold connectors for my bigger packs and made up some adapters so I can use my charge leads for other connectors such as the jst's on my smaller packs. This should also mean it will be easy to use it on other peoples packs who might use different connectors though it will mean there is extra resistance to take into account from the extra wiring in pack mode.

I then set about testing my packs which had all been sitting together so temperature difference didn't effect it when comparing my packs like for like. I will need to get myself an accurate thermometer so I can attempt to take readings at the same temperature over time.

Instead of trying to type out all my readings I've attached a picture of my scribblings. Notice the Max Poly 900mah 20C 3S packs, these are my oldest packs and though they still have enough power to fly the model they are for I had been thinking about replacing them. The other thing I notice is the difference of the sum of cell resistance and the pack resistance is much higher on my small packs with jst connector, maybe it's time to switch over to 2mm golds? or is this just down to using my charge lead to connect it to the meter? it is a high quality lead though it is quite long.

If you can make any sense of my scribblings I would be interested in hearing your thoughts on them. Unfortunately the only other bit of information that would be useful for you is the ambient temperature but unfortunately I can't measure it at the minute.
Dec 03, 2011, 01:31 PM
Skint since 2000
ghost2212's Avatar

Mine arrived today as well

Only just got back from work but will solder some 4mm bullets so I can just use charge leads instead of making a set of adapters. Once this is done I'll post up some results from my various packs.

Not sure on others preference but I wouldnt bother with the deans connector as its not the most commen connector anymore IMO

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