Go Back   Horizons Unlimited - The HUBB > Technical, Bike forums > Tech

Tech ALL bikes: "Generic" tech questions and answers. Maintenance, general discussions etc.
Contact Overland Solutions for all your custom modifications and setup for overland travel.

Reply
 
LinkBack Thread Tools Display Modes
  #16  
Old 21 Apr 2012
Gold Member
New on the HUBB
 
Join Date: Dec 2007
Location: Berlin, VT USA
Posts: 3
Quote:
Originally Posted by _CY_ View Post
excellent feedback on starting your R1200 in -15(f or C?) degree weather with Shorai batteries. which model? LFX ?

HUGE advantage having an intelligent charger with balancing features with LiFePO4 batteries. 13.6v resting charge indicates a fully charged condition. LiFePO4 fully charged is 14.4v which quickly will scrub off surface volts to about 13.8v. depending on which charger was used. 14.4v to 13.6v represents about 10% of total capacity. voltage drops rapidly to 13.6 range. then voltage remains very flat until about 10% remains. only about 1/2volt drop for the working 70% of amp hour capacity. don't drop below 80% DOD or 12.86v if you want your battery to have a long life.

note just because a small LiFePO4 battery successfully starts a motorcycle at low temps with a fully charged/balanced battery. doesn't mean that same small LiFePO4 battery is recommended for adventuring. Amp hour is amp hour, there is no substitute. IMHO Shorai overates their batterie's actual amp hour capacity.
go with a larger battery than recommended.
Cy,
The temp was -15F. The batteries are the LFX21A6-BS12. The battery used to start the bikes was first charged to the store level (which as I understand it is not 100% full charge), then left outside for two days to chill to outside air temperature and to allow the charged state to "settle". I suspect those two factors contributed to the initial low voltage reading. I have not take a voltage reading immediately after a full charge on a "warm" day so I don't know what a fully charged voltage level is for this battery but I suspect it is higher than 13.2V. As far as amp hours, I have no comment, not having the tools to do that kind of testing.

My choice of the Shorai was more out of frustration with the OEM AGM batteries, that never seemed to last more than a year and a half to two years for me. I took care of them, kept them on the BMW "special" and expensive charger and they still died prematurely IMHO. So the Shorai choice was really to try new technology and to vent my frustration with the OEM battery. So far the Shorai has lasted longer than the OEM. We'll see.

Shawn
__________________
Shawn Bryan
R1200GSA, R1200GS
Reply With Quote
  #17  
Old 5 May 2012
Registered Users
Veteran HUBBer
 
Join Date: Jan 2010
Location: London
Posts: 284
Well so far I've not managed to find any kind of battery. Thailand is playing hard to get. I can find a super-scooter battery that fits and will get her moving but it's the same as what i had and it died in a matter of months. I know what I want, I fancy the Motobatt quadflex, it has none of the difficulties and back in the UK the price is good too. I've settled on the idea of one of those but no luck whatsoever.
If anyone knows of a good place to try then I'm all ears.
Reply With Quote
  #18  
Old 5 May 2012
colebatch's Avatar
Registered Users
Veteran HUBBer
 
Join Date: Nov 2004
Location: London / Moscow
Posts: 1,726
Quote:
Originally Posted by kickaha View Post
Hi Walter,

And congrat for the record!

How would you rate these batteries reliability for a longer trip. I am currently preparing to do the Stans, Mongolia, and Siberia on your tracks over 4-5 months. Would the LiFePo4 be something to consider?

Kickaha
Ask me in 4 months time ... I am heading out the same way in a week - with a Shorai LiFePO4 battery installed.
__________________
__________________________________________________ ________________
"Do NOT go wherever the path may lead. Go instead where there is no path, and leave a trail"



Sibirsky Extreme - Adventure Motorcycling Guide to Siberia and Mongolia - on Facebook

Click here for Sibirsky Extreme Trail DVD Trailer
Reply With Quote
  #19  
Old 7 May 2012
Registered Users
HUBB regular
 
Join Date: Dec 2011
Location: Tulsa, OK
Posts: 84
Quote:
Originally Posted by colebatch View Post
Ask me in 4 months time ... I am heading out the same way in a week - with a Shorai LiFePO4 battery installed.
sure hope you are taking a large enough battery, like LFX 36 = 12 amp hours actual ... note accessories like heated gear will draw down actual amps, not (pb eq) lead acid equal.

if your high tech bike has any issues, LFX 36 will have the reserve cranking needed to diagnose and clear. like say a bad load of fuel... just to be safe, seal all joints/ports with silicon as battery is not waterproof.
__________________
R90S, R80G/S PD
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 Registered Users and/or Members and 1 guests)
 
Thread Tools
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

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Spot messenger batteries Hemuli Navigation - Maps, Compass, GPS 1 11 Mar 2012 22:43
Shorai batteries reliability - Suitable for overlanding? kickaha Equipping the Bike - what's the best gear? 11 14 Feb 2012 02:46

 
 
 

NEW! HU 2015 Motorcycle Adventure Travel Calendar is now available! Get your copy now for some terrific travel inspiration!

HUGE, 11.5 x 16.5 inches, beautifully printed in Germany on top quality stock! Photos are the winning images from over 600 entries in the 9th Annual HU Photo Contest!

Horizons Unlimited 2015 Motorcycle Adventure Travel Calendar.

"The calendar is magnificent!"

"I just wanted to say how much I'm loving the new, larger calendar!"

We share the profit with the winning photographers. YOU could be in the HU Calendar too - enter here!

Next HU Eventscalendar

See all events

 

Latvia to Australia, an inspirational 5 month journey full of unexpected adventures!

HU DVD Autumn Special!

Take 40% off Road Heroes Part 1 until October 31 only!

Road Heroes features tales of adventure, joy and sheer terror by veteran travellers Peter and Kay Forwood (193 countries two-up on a Harley); Dr. Greg Frazier (5 times RTW); Tiffany Coates (RTW solo female); and Rene Cormier (University of Gravel Roads).

The first in an exciting new series, Road Heroes features tales of adventure, joy and sheer terror by veteran travellers."Inspiring and hilarious!"

"I loved watching this DVD!"

"Lots of amazing stories and even more amazing photographs, it's great fun and very inspirational."

"Wonderful entertainment!"

Check it out at the HU Store! Remember to use Coupon Code 'HEROES' on your order when you checkout.

 

Scottoiler automatic chain oilers. The most important accessory for your next motorcycle adventure!

Renedian Adventures

Renedian Adventures

What others say about HU...

"I just wanted to say thanks for doing this and sharing so much with the rest of us." Dave, USA

"Your website is a mecca of valuable information and the DVD series is informative, entertaining, and inspiring! The new look of the website is very impressive, updated and catchy. Thank you so very much!" Jennifer, Canada

"...Great site. Keep up the good work." Murray and Carmen, Australia

"We just finished a 7 month 22,000+ mile scouting trip from Alaska to the bottom of Chile and I can't tell you how many times we referred to your site for help. From how to adjust your valves, to where to stay in the back country of Peru. Horizons Unlimited was a key player in our success. Motorcycle enthusiasts from around the world are in debt to your services." Alaska Riders

contest pic

10th Annual HU Travellers Photo Contest is on now! This is an opportunity for YOU to show us your best photos and win prizes!

NEW! HU 2014 Adventure Travel T-shirts! are now available in several colors! Be the first kid on your block to have them! New lower prices on synths!

HU 2014 T-shirts now in!

Check out the new Gildan Performance cotton-feel t-shirt - 100% poly, feels like soft cotton!


What turns you on to motorcycle travel?


Global Rescue, WORLDwide evacuation services for EVERYONE

Global Rescue is the premier provider of medical, security and evacuation services worldwide and is the only company that will come to you, wherever you are, and evacuate you to your home hospital of choice. Additionally, Global Rescue places no restrictions on country of citizenship - all nationalities are eligible to sign-up!


New to Horizons Unlimited?

New to motorcycle travelling? New to the HU site? Confused? Too many options? It's really very simple - just 4 easy steps!

Horizons Unlimited was founded in 1997 by Grant and Susan Johnson following their journey around the world on a BMW R80 G/S motorcycle.

Susan and Grant Johnson Read more about Grant & Susan's story

Membership - help keep us going!

Horizons Unlimited is not a big multi-national company, just two people who love motorcycle travel and have grown what started as a hobby in 1997 into a full time job (usually 8-10 hours per day and 7 days a week) and a labour of love. To keep it going and a roof over our heads, we run events (22 this year!); we sell inspirational and informative DVDs; we have a few selected advertisers; and we make a small amount from memberships.

You don't have to be a Member to come to an HU meeting, access the website, the HUBB or to receive the e-zine. What you get for your membership contribution is our sincere gratitude, good karma and knowing that you're helping to keep the motorcycle travel dream alive. Contributing Members and Gold Members do get additional features on the HUBB. Here's a list of all the Member benefits on the HUBB.


Books & DVDs

amazon

All the best travel books and videos listed and often reviewed on HU's famous Books page. Check it out and get great travel books from all over the world.


Motorcycle Express for shipping and insurance!

Motorcycle Express

MC Air Shipping, (uncrated) USA / Canada / Europe and other areas. Be sure to say "Horizons Unlimited" to get your $25 discount on Shipping!
Insurance - see: For foreigners traveling in US and Canada and for Americans and Canadians traveling in other countries, then mail it to MC Express and get your HU $15 discount!




All times are GMT +1. The time now is 11:05.