logo
Thread Tools
Old 03-17-2018, 12:18 PM
BarracudaHockey is offline
Find More Posts by BarracudaHockey
Multi Platform Pilot
BarracudaHockey's Avatar
United States, FL, Jacksonville
Joined Dec 2007
9,896 Posts
I've been flying for about 40 years now. A LOT, way more than most casual modelers and I deal with about 10 or 12 new gas setups per year. You can see my latest on the cover of Model Aviation (the Waco)

I've had 0 failures of the type that take down the battery. Mechanical switches, electronic felgercarb like isolation boards etc are way more likely failure points than a properly handled battery.
BarracudaHockey is offline Find More Posts by BarracudaHockey
Reply With Quote Quick reply to this message
Sign up now
to remove ads between posts
Old 03-17-2018, 05:16 PM
Judge is offline
Find More Posts by Judge
Team Futaba
Judge's Avatar
United States, CA, Ladera Ranch
Joined Jan 2006
11,643 Posts
The only fault that will take down both packs is a hard short, and like Mr. Hockey, in many years of flying all kinds of planes and helicopters I have never had that happen, nor seen it happen to anyone else. In flight. I have seen hard shorts on the ground, etc.
Judge is offline Find More Posts by Judge
Reply With Quote Quick reply to this message
Old 03-19-2018, 03:14 PM
Pilotpete is offline
Find More Posts by Pilotpete
Registered User
Pilotpete's Avatar
Lyndonville, VT
Joined Nov 2008
1,063 Posts
In 30 years in the hobby, I've had one NiCd cell short out. That was a long time ago.
AFAIK, with lithium chemistry, an open cell is the likely failure mode, so 2 batteries and 2 switches in parallel is a good plan. Works for me
Pete
Pilotpete is offline Find More Posts by Pilotpete
Reply With Quote Quick reply to this message
Old 03-20-2018, 07:15 AM
ml82232 is offline
Find More Posts by ml82232
Registered User
ml82232's Avatar
United States, NE, Wahoo
Joined Oct 2013
173 Posts
After 30 years working on heavy equipment and heavy trucks (worse vibration and extreme environment ) with multiple (2-4) batteries hooked either series or parallel / I have seen batteries with total failure BUT usually only 1 battery.
The others will normally be good , Almost always the failure is traced to the CHARGING system
In my planes I run 2 batteries ( same chemistry and MAH rating) to 2 switches to 2 ports in the receiver which gives clean consistent power flow
Only failures so far have been 2 switches / separate airframes (caught in pre-flight) and 2 batteries which wouldn't accept a charge after about 50 to 60 charge cycles
ml82232 is offline Find More Posts by ml82232
Reply With Quote Quick reply to this message
Old 03-20-2018, 08:34 AM
ghoffman is offline
Find More Posts by ghoffman
Registered User
ghoffman's Avatar
New Hampshire, USA
Joined Nov 2009
8,235 Posts
The dual battery Spektrum Powersafe receivers have been 100% reliable for me over 5 years. I monitor the battery voltages at the end of the day and they are always within 0.1V of each other.
ghoffman is offline Find More Posts by ghoffman
Reply With Quote Quick reply to this message
Old 03-20-2018, 09:41 AM
BarracudaHockey is offline
Find More Posts by BarracudaHockey
Multi Platform Pilot
BarracudaHockey's Avatar
United States, FL, Jacksonville
Joined Dec 2007
9,896 Posts
Exactly, if you fly Spektrum there really isn't much more of a bullet proof setup
BarracudaHockey is offline Find More Posts by BarracudaHockey
Reply With Quote Quick reply to this message


Quick Reply
Message:


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools