Reliable battery telemetry solution

M

Mihnea de Vries

Member
Since DJI WKM lacks telemetry and his battery low voltage warning is not enough for monitoring battery status when flying a rig with Red Epic, I'm looking for a reliable battery telemetry solutions for a 4 x 5S battery set.

I found two possible candidates:

1. Quanum Wireless Battery Telemetry
http://www.hobbyking.com/hobbyking/store/uh_viewitem.asp?idproduct=10343

2. Graupner Electric Air Module2-14S
http://www.graupner.de/en/products/ad5bb423-3174-4c1b-aad2-6920ad769c15/33620/product.aspx

If anyone is using this devices please share a few thoughts about them.

Or maybe you know something better?

Thanks
 
Last edited by a moderator:

snurre

snurre

Member
Hi,
Eagletree Systems have a fairly reliable solution in the Seagull and Electric Expander including their hall element toroid current sensor. Data is transmitted with the telemetry transmitter.
Alternative solution is their eLogger with built on current sensor. It can feed their osd pro with data to supeimpose on your video downlink.
What I really like about both solutions is that they provide mAh discharge count, which is unbeatable when it comes to nowing exactly how much juice there is left in your pack.
The downside is that Seagull display may not come with an ultra modern look an feel. But it works.

Skickat från min Galaxy Nexus via Tapatalk 2
 


Efliernz

Efliernz

Pete
+1 for the Quanum.

Two levels of adjustable voltage threasholds (one beep or two beeps), cheap (US$50) but appears to work well. I have approx 20 hours multi time on mine. I have the current monitor too... awesome for real-time stats at-a-glance.

I have had two 4S batteries where 1 cell has semi-failed in flight. Early into the flight the overall voltage was ok yet a single cell had dropped to 3.2 where the others were 3.9v. Not enough for an overall voltage alarm but as each cell is monitored (through the balance plug) it alarmed. This alone may have saved two machines.

Pete
 



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