VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics

  #1  
Old 09-04-2017, 10:53 AM
henke@mweb.co.za henke@mweb.co.za is offline
 
Join Date: Jan 2014
Location: South Africa
Posts: 56
Default Earthx batteries

Hi Guys

Can anyone that uses these batteries maybe report back on performance/ durability and which one to use for 540?
__________________
Regards
Henke
RV 10 builder
Reply With Quote
  #2  
Old 09-04-2017, 12:53 PM
scrollF4's Avatar
scrollF4 scrollF4 is offline
Moderator, Asst. Line Boy
 
Join Date: Jan 2010
Location: Flower Mound, TX
Posts: 990
Default The VAF Search is your friend

Henke,
I ran a VAF search on EarthX for you (link below).

http://www.vansairforce.com/communit...rchid=32829252

Simply put, EarthX batteries' performance and durability are outstanding, as are their safety and the company's customer support. If Kathy or a 540/EarthX user don't chime in here soon, I'd just visit their website and email them.

Remember, though, that you need to match the battery to the alternator's amperage, not the engine. For example, of you use the Odyssey 680 battery, you want an EarthX ETX680. I have a 70 amp alternator, which makes the ETX680 too small: Thus, I fly an ETX900.

Of note, with my airplane on a flat surface, no wind, engine off, no chocks, throttle idle/mixture cutoff: If I crank the prop for 10 seconds, that battery has me taxiing forward at 2 knots groundspeed! I love the EarthX battery.
__________________
Scroll

Sid "Scroll" Mayeux, Col, USAF (ret)
Northwest Regional, Roanoke TX (52F...home of DR's Van Cave)
"KELLI GIRL" N260KM RV-7A tipper, YIO-360M1B, dual SkyView, GTN-650, VPX, EarthX LiFePO.
Wrap by AircraftWraps.Com. Nose Art by VictoryGirl.com.
90% done, 90% to go...
www.mykitlog.com/scrollf4/

Proud and grateful 2017 -=VAF=- Contributor
Reply With Quote
  #3  
Old 09-04-2017, 01:34 PM
rv6ejguy's Avatar
rv6ejguy rv6ejguy is offline
 
Join Date: Mar 2005
Location: Calgary, Canada
Posts: 4,017
Default

Seems a number have been replaced in the first year under warranty for cell imbalance warnings. When I asked the question here on VAF (how many and why), a month or 2 ago, it went unanswered. Good to step up and replace product which doesn't meet specs but why have we seen reports of several here being replaced within months of purchase? Is this just extra caution on the part of EarthX for the aviation environment?
__________________

Ross Farnham, Calgary, Alberta
Turbo Subaru EJ22, Marcotte M-300, IVO, RV6A C-GVZX flying from CYBW- 416.6 hrs. on the Hobbs,
RV10 95% built- Sold 2016
http://www.sdsefi.com/aircraft.html
http://sdsefi.com/cpi.htm



Last edited by rv6ejguy : 09-04-2017 at 03:59 PM.
Reply With Quote
  #4  
Old 09-04-2017, 01:52 PM
scrollF4's Avatar
scrollF4 scrollF4 is offline
Moderator, Asst. Line Boy
 
Join Date: Jan 2010
Location: Flower Mound, TX
Posts: 990
Default

Without actually answering on EarthX's behalf, but based solely on my own observations, I believe it's a two-fold 'yes'.

Over the past 2 years, EarthX had been improving their product, including the cell balancing and the battery management circuits' tracking and identification of cell problems.

In addition, they've been very aggressive in immediately replacing such batteries. They want the old battery back because it's a data point that helps them improve the product. At Oshkosh, Kathy told me their return rates have dropped as they have improved the product.

Me? Clearly I'm a fan of the battery.
__________________
Scroll

Sid "Scroll" Mayeux, Col, USAF (ret)
Northwest Regional, Roanoke TX (52F...home of DR's Van Cave)
"KELLI GIRL" N260KM RV-7A tipper, YIO-360M1B, dual SkyView, GTN-650, VPX, EarthX LiFePO.
Wrap by AircraftWraps.Com. Nose Art by VictoryGirl.com.
90% done, 90% to go...
www.mykitlog.com/scrollf4/

Proud and grateful 2017 -=VAF=- Contributor
Reply With Quote
  #5  
Old 09-04-2017, 02:17 PM
Mark Dickens's Avatar
Mark Dickens Mark Dickens is offline
 
Join Date: Apr 2012
Location: Collierville, TN (KFYE)
Posts: 798
Default

I just replaced my Pc680 with an Earthx and while I can't vouch for longevity, I can vouch for the weight savings and the extra cranking amps...the thing really spins my IOX-370 at start. So far very pleased. It's hard to imagine that much energy out of something so small and light
__________________
RV-8 #81077 Super Slow Build
Titan IOX-370, Dual P-Mags, AFP FM200A FI, Sensenich GA Prop
First Flight November 20, 2016
Phase One Complete June 1, 2017
http://www.marksrv8.com
2017 Donation Complete!
Reply With Quote
  #6  
Old 09-04-2017, 02:19 PM
henke@mweb.co.za henke@mweb.co.za is offline
 
Join Date: Jan 2014
Location: South Africa
Posts: 56
Default

Thanks Sid. Thinking also the etx900 will do the job
__________________
Regards
Henke
RV 10 builder
Reply With Quote
  #7  
Old 09-04-2017, 02:30 PM
JohnInReno's Avatar
JohnInReno JohnInReno is offline
 
Join Date: Jun 2005
Location: Prescott Valley/Chandler AZ
Posts: 250
Default ETX900

I have been flying behind an ETX900 since February 2016. Promptly replaced when I called about a cell imbalance warning. No issues since then.

Not only does this battery spin the prop faster than anything I have seen, it also recharges just as fast. After a prolonged hot start, I have seen 60+ amps for a minute before it declines to my normal 17 amp draw.

I'm a fan.
__________________
John Morgensen
RV-9A N946PM 400+ hours since 2013
Nevada/Arizona
Reply With Quote
  #8  
Old 09-04-2017, 03:47 PM
vic syracuse vic syracuse is offline
Super Moderator
 
Join Date: May 2005
Location: Locust Grove, GA
Posts: 2,023
Default

I've had a 1200 in my own RV-10 and a couple of 900's in others for over a year with no issues.

Vic
__________________
Vic Syracuse

Built RV-4, RV-6, 2-RV-10's, RV-7A, RV-8, Prescott Pusher, Kitfox Model II, Kitfox Speedster, Kitfox 7 Super Sport, Just Superstol, DAR, A&P, EAA Tech Counselor/Flight Advisor, CFII-ASMEL/ASES
EAA Homebuilt Council Chair/member EAA BOD
Van's East Coast Representative
www.Baselegaviation.com
Reply With Quote
  #9  
Old 09-06-2017, 05:53 PM
EarthX Lithium EarthX Lithium is offline
 
Join Date: Feb 2014
Location: Windsor, CO
Posts: 188
Default

Quote:
Originally Posted by rv6ejguy View Post
Seems a number have been replaced in the first year under warranty for cell imbalance warnings. When I asked the question here on VAF (how many and why), a month or 2 ago, it went unanswered. Good to step up and replace product which doesn't meet specs but why have we seen reports of several here being replaced within months of purchase? Is this just extra caution on the part of EarthX for the aviation environment?
Dear Ross,

The original software algorithm in 2015 for detecting cell imbalances was too conservative and was giving false warnings. Our primary focus is safety and performance and when we received these batteries back, there was nothing wrong with the cells but that is how we determined the software was too conservative. I am sure it was an inconvenience to these battery owners, but we would rather be on the side of caution than not.
__________________
Fly Lightly,

Kathy
Reply With Quote
  #10  
Old 09-06-2017, 06:02 PM
rv6ejguy's Avatar
rv6ejguy rv6ejguy is offline
 
Join Date: Mar 2005
Location: Calgary, Canada
Posts: 4,017
Default

Quote:
Originally Posted by EarthX Lithium View Post
Dear Ross,

The original software algorithm in 2015 for detecting cell imbalances was too conservative and was giving false warnings. Our primary focus is safety and performance and when we received these batteries back, there was nothing wrong with the cells but that is how we determined the software was too conservative. I am sure it was an inconvenience to these battery owners, but we would rather be on the side of caution than not.
Thanks Kathy, that was the info I was looking for.
__________________

Ross Farnham, Calgary, Alberta
Turbo Subaru EJ22, Marcotte M-300, IVO, RV6A C-GVZX flying from CYBW- 416.6 hrs. on the Hobbs,
RV10 95% built- Sold 2016
http://www.sdsefi.com/aircraft.html
http://sdsefi.com/cpi.htm


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 09:53 AM.


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.