Go Back   Horizons Unlimited - The HUBB > 4 wheels > Land Rover Overland Tech

Land Rover Overland Tech Land Rover TECH discussions and info.
Contact Overland Solutions for all your custom modifications and setup for overland travel.

Visit Matt Savage for VIAIR compressors, Air Lift Helper Springs, Tyre Levers, Chris Scott's Books & DVDs, KC Daylighters, Allisport Intercoolers, Overland Preparation and lots more!

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 27 Nov 2011
Registered Users
HUBB regular
 
Join Date: Oct 2006
Posts: 45
Underpowered battery

I am firmly of the opinion that if it's not broken you shouldn't fix it. My defender 90 300tdi starts very well and seemingly runs fine. No problems with electrics that are obvious to me. However I left an interior light on and drained the battery. The AA came out to rescue me from the airport car park (much humiliation). On chatting he exclaimed "you've got the wrong battery mate, this is for a ford focus not something like your Landy". He quoted what the VA should be for the battery. I nodded and drove home.

My question is - given my landy starts fine and seems to run well, what detrimental effect would continuing to run the thing on an underpowered battery have? Specifically would my shockingly poor dipped headlights improve any? Answers much appreciated. Sorry this question isn't more demanding.
__________________
__________________________________________________ _________________________________
Reply With Quote
  #2  
Old 28 Nov 2011
Big Yellow Tractor's Avatar
Contributing Member
Veteran HUBBer
 
Join Date: Jan 2008
Location: England
Posts: 608
I suspect that the "very nice man" was just trying to sell you a battery.
__________________
Reply With Quote
  #3  
Old 28 Nov 2011
Registered Users
Veteran HUBBer
 
Join Date: Nov 2009
Location: J10 M40 UK
Posts: 272
if you try starting without preheat , does it still start very quickly ? if no try and see how long your battery stands up to repeat attempts . But above reply is probably not far off the mark . You couls also fit 2nd battery as standby with isolator incase you do it again
__________________
Current : 1986 110 CSW 3.0Tdi6, 1991 90 300tdi auto, 1999 Rangerover 2.5 dse auto, 2001 Freelander TD4 Auto
Reply With Quote
  #4  
Old 28 Nov 2011
Contributing Member
HUBB regular
 
Join Date: Mar 2008
Location: Dublin, IRELAND
Posts: 91
The VA is the product of the Volts and the AMPS that the battery will deliver ie power, but the important figure for a battery is the AmpHours. Bigger batteries have more capacity and can deliver the amps for longer -hence higher AHrs.

A diesel requires a larger battery than a petrol because the engine has glow plugs (heaters which are power hungry) and relies on compression only to ignite the mixture.

In colder weather the chemistry of the battery is such that the capacity reduces. This is why you always discover that your battery is gone in the middle of winter.

A small battery will generally operate OK in a diesel but will be exercised much harder. This may have some impact on the life of the battery but will be shown up when left for a long period with a small load (eg alarm or interior light) or when the weather gets cold. This is because it does not have sufficient capacity. This is a bit like trying to live on 1000 calories a day when you need 3000. You will manage for a while but eventually fade.

Also, if you do a lot of short runs, you will be taking large amounts of power from the battery and not running the alternator long enough to reachrge it so it will be limping along on less and less charge. You won't notice until it falls below a certain threshold.

This is also true if you are running lots of accessories.


In short, a battery designed for a petrol engine is insufficient for a diesel. Get yourself the right battery (specified as AmpHrs i.e how long it can deliver a specified number of amps)

With regard to the poor headlights, possibly the battery, but these are dependent on your alternator and regulator. IF your battery has little charge then the alternator voltage may be dragged down as the number of amps available are drawn by the battery charging.

I don't know what the specified current rating of the landy alternator is, but I would have thought it is quite beefy.

You could test this by measuring the voltage on the battery when it has been standing for a while -say overnight. This should be around 12.5 to 13 V. If not then your battery is not being charged by the alternator when the landy is running.

When the engine is running, the battery voltage should go up to about 14V (ie the alternator voltage). As I said, if your battery is dragging the alternator voltage down then it might not get up to this figure.

I would recommend getting the proper battery and then check that you get these readings. If not then your alternator/regulator/rectifier need looking at. ASk whoever you get the battery from to check these.

If you keep running on the ' ford focus' battery you will come unstuck when the weather gets cold.


Cheers
Reply With Quote
  #5  
Old 28 Nov 2011
Registered Users
Veteran HUBBer
 
Join Date: May 2008
Location: Mid Wales
Posts: 100
Tdi love.

tdi's seem to cope well on rubbish batteries. I needed the proper battery out of my 200tdi 110 for my 2A at some point so lobbed the battery out of a mates Astra that he was scrapping years ago into it. It's still there because it hasn't let me down yet, even during the worst of last winter. Having said that if I was setting off anywhere serious that would be the 2nd thing I'd replace,after the rad which hasn't any fins left, fine for Mid Wales.
Oh and it's also running a 9000lb electric winch, through two Wars of the Roses so far.
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


 
 
 

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

 

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 16:08.