VansAirForceForums  
Home > VansAirForceForums

-POSTING RULES
-Advertise in here!
- Today's Posts | Insert Pics

Keep VAF Going
Donate methods

Point your
camera app here
to donate fast.


Go Back   VAF Forums > Main > Safety
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #61  
Old 01-19-2021, 10:07 AM
mikerkba mikerkba is offline
 
Join Date: Sep 2008
Location: Ely, Nevada
Posts: 229
Default But did your electronics die? :)

I often read that using a generic battery charger to keep your battery level up during an extended ground avionics run puts your sensitive electronics at risk. But, I have never heard of a report of such an outcome.

Has anyone had this happen? And, if so, was your battery in the circuit during the charger operation or was the charger the sole source of power? I have the impression that having the battery in the ground power loop (meaning a charger to the battery while the battery is in the normal circuitry and the avionics master on) buffers even the ragged-est of battery charger output and protects electronics.
__________________
Mike Coster
BUILDER: N92MB RV7A (A/W 3/2009) - Sold
ADOPTED/reworked: N4032Q RV8A (8/2017)
Building: S-21 Outback/Titan, tail and cockpit mated (3/2020)
KELY/Ely, NV
Reply With Quote
  #62  
Old 01-19-2021, 11:10 AM
Carl Froehlich's Avatar
Carl Froehlich Carl Froehlich is offline
 
Join Date: Dec 2007
Location: Dogwood Airpark (VA42)
Posts: 2,806
Default

Quote:
Originally Posted by mikerkba View Post
I often read that using a generic battery charger to keep your battery level up during an extended ground avionics run puts your sensitive electronics at risk. But, I have never heard of a report of such an outcome.

Has anyone had this happen? And, if so, was your battery in the circuit during the charger operation or was the charger the sole source of power? I have the impression that having the battery in the ground power loop (meaning a charger to the battery while the battery is in the normal circuitry and the avionics master on) buffers even the ragged-est of battery charger output and protects electronics.
Having a battery in parallel with a noisy charger will only mitigate DC voltage fluctuations (if not too severe). It will do little to filter out the AC hash and various harmonics that will be floating on top of the DC voltage. Read you manuals, some have specific cautions about running with a battery charger connected.

Sure - some chargers are better than others but why flight it? For about the same price (or cheaper) a $99 30 amp regulated DC power supply will run the panel forever and keep your battery(s) topped off, just like when you are running the engine with the alternator on line. Get a power supply with adjustable output voltage so your can match to whatever battery you have.

Note, no matter how you put juice back in your battery(s) I strongly recommend never leaving any charger or power supply connected unattended, and never for days/weeks/months on end.
Carl
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 06:15 PM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.