View Full Version : Battery spread sheets?
wren1702
05-10-2007, 12:09 PM
How many of you keep a log on your batteries? If so, do you have a file showing it. I was thinking of building a sheet to keep up with some basic information per cycle. I figure since I'll have so much invested I might as well take really good care of them. :mrgreen:
th3tick
05-11-2007, 01:58 AM
I've been working on this one for about a day. It originally came from a post here on HeliFreak, but was unattributed, and so I apologize to the original author for not attributing its origins now.
It still has some problems - there's a macro it complains about on startup that I can't delete, and the battery log has the data not collapsed, but it still does what I've been trying to modify it to do. I'm still working on those bits.
What I've been trying to get it to do is allow you to enter the flight log data and it have per-battery data in the battery log, then summary data in the battery summary that are automatically calculated. There's a lot more data in this than most folks will likely want, but I want to record what I have, so it's got a lot ;) Hooray for the E-Logger!
It's crude, but it's helping me...
John
MarkD
05-11-2007, 06:55 AM
I use FlightLog.
http://www.lammers.ca/FlightLog/
jrohland
05-11-2007, 10:57 AM
I use this (http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXMBS3&P=ML) (Eagletree MicroPower E-Logger), this (http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXRAW8&P=ML) (Eagletree brushless motor RPM sensor) and this (http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXPBP3&P=M) (Eagletree temperature sensor) to record my flights.
I store all the session files on my computer. In those session files I have very accurate MAH used, amps drawn, pack volts, watts, head RPM and battery temp 4 times a second over each flight.
Considering the amount and quality of the information, this system is a bargain.
By the way, I do check the MAH logged, against the MAH put back into the packs by the charger. It is very close. They will never be spot-on because I charge with the balancer attached. The balancer pulls power out of the higher voltage cells so, the charger always shows more MAH put into the pack than was actually used. This is because the balancer is pulling power out of the pack while the charger is putting power in.
jrohland