Home

   Log in or Register



Insurance Quotes
forums Campsite Search Comp Directory tips virtual brochure Profile
Tent and Awning Reviews Competitions Caravans and Motorhomes For Sale Shopping Diary Advent Calendar

Advertisement

Message Forums
Welcome Guest Register Login Search The Forum Posts Since Last Visit
 Reception - All Forums
   Caravans and Caravanning -  Caravan Towcars and Towing Advice 		Share   Post on X / Twitter  Share on Facebook  Email  Printer Friendly Version Print
Subject Topic: Are my calcs right Post Reply Post New Topic
Personchindley
05/9/2012 at 3:55pm
 Location: Lowton Warrington
 Outfit: Chevrolet Captiva 4x4.Lunar Quasar 524 View chindley's Profile View Profile   Reply to chindley Reply   Quote chindley Quote  
Joined: 29/6/2004

Platinum Member
Platinum Member

Forum Posts:   516
Site Reviews Total: 1
Site Reviews 2024: 0  
Site Reviews 2023: 0  
Site Reviews 2022: 0  
Site Reviews 2021: 0  
Site Reviews 2020: 0  
Site Reviews 2019: 0  
Site Reviews 2018: 0  
Site Nights 2024: 0
Site Nights 2023: 0
Site Nights 2022: 0
Site Nights 2021: 0
Site Nights 2020: 0
Site Nights 2019: 0
Site Nights 2018: 0
Hi, I picked up my new to me van, and they noted on the service that the battery was completely flat and may be dead, so I am testing it.
I have an 11watt lamp running off it which equates to 0.90 amps. The battery is a 100ah battery. So if the light runs for 100 hours my battery is putting out about 90 ah and if it runs for 50 hours it's about 45ah. Is this right.?


Personjohnjory
05/9/2012 at 4:10pm
 Location: Lowestoft Suffolk
 Outfit: Skoda Superb DSG + Elddis Affinity 550 View johnjory's Profile View Profile   Reply to johnjory Reply   Quote johnjory Quote  
Joined: 31/10/2003

Diamond Member
Diamond Member

Forum Posts:   1604
Site Reviews Total: 124
Site Reviews 2024: 0  
Site Reviews 2023: 0  
Site Reviews 2022: 0  
Site Reviews 2021: 1  
Site Reviews 2020: 2  
Site Reviews 2019: 6  
Site Reviews 2018: 4  
Site Nights 2024: 0
Site Nights 2023: 0
Site Nights 2022: 0
Site Nights 2021: 5
Site Nights 2020: 9
Site Nights 2019: 23
Site Nights 2018: 4
Amps = Watts / Volts, so your "calcs" are theoretically correct.

However, as the battery discharges it also reduces in voltage which throws things out.

Generally, lead-acid batteries are pretty useless when they discharge to below 10.5V.

I suggest best approach is a 'suck it and see' one. Try using your new 'van for a weekend and see what happens. Worst thing is that you will need a new battery, which you suspect already.

Enjoy your new 'van!


Personchindley
05/9/2012 at 4:59pm
 Location: Lowton Warrington
 Outfit: Chevrolet Captiva 4x4.Lunar Quasar 524 View chindley's Profile View Profile   Reply to chindley Reply   Quote chindley Quote  
Joined: 29/6/2004

Platinum Member
Platinum Member

Forum Posts:   516
Site Reviews Total: 1
Site Reviews 2024: 0  
Site Reviews 2023: 0  
Site Reviews 2022: 0  
Site Reviews 2021: 0  
Site Reviews 2020: 0  
Site Reviews 2019: 0  
Site Reviews 2018: 0  
Site Nights 2024: 0
Site Nights 2023: 0
Site Nights 2022: 0
Site Nights 2021: 0
Site Nights 2020: 0
Site Nights 2019: 0
Site Nights 2018: 0
Cheers, will give it a go and see what happens.


PersonGrampian91
05/9/2012 at 7:34pm
 Location: Midlands
 Outfit: Mondeo Avondale Gram View Grampian91's Profile View Profile   Reply to Grampian91 Reply   Quote Grampian91 Quote  
Joined: 11/5/2008

Diamond Member
Diamond Member

Forum Posts:   6893
Site Reviews Total: 2
Site Reviews 2024: 0  
Site Reviews 2023: 0  
Site Reviews 2022: 0  
Site Reviews 2021: 0  
Site Reviews 2020: 0  
Site Reviews 2019: 0  
Site Reviews 2018: 0  
Site Nights 2024: 0
Site Nights 2023: 0
Site Nights 2022: 0
Site Nights 2021: 0
Site Nights 2020: 0
Site Nights 2019: 0
Site Nights 2018: 0
Fully charge the battery and check the voltage after an 1/2 hour. Then leave it overnight and check the voltage again.

It should be around 12.6 - 12.8 volts.

Ideally you want a couple of headlight bulbs 55watts. Pop 2 of those on and check the voltage after half an hour with the bulbs still attached.

It should still be over 12.4 volts.



In order to post a reply you will need to register, or if already registered please log in here

Prev       Next
Quick Links - All Forums - Caravan Towcars and Towing Advice - Top of Page

Printer Friendly Version Printable version      Share   Post on X / Twitter  Share on Facebook  Email


Latest News, Discounts and Competitions  see all...

7621 Visitors online !

Free UKCampsite.co.uk Window Sticker  -  Recommend to Friend  -  Add a Missing Campsite

[Message Forums]  [Caravan Sites & Camping]  [Company Listings]  [Features / Advice]  [Virtual Brochure]  [Shop!]
[Reception]  [Competitions]  [Caravans & Motorhomes For Sale]  [Event Diary]  [Contact Us]  [Tent Reviews] 



Please note we are not responsible for the content of external sites & any reviews represent the author's personal view only. Please report any error here. You may view our privacy and cookie policy and terms and conditions here. All copyrights & other intellectual property rights in the design and content of this web site are reserved to the UKCampsite.co.uk © 1999 - 2024


Advertisement
Advertisement


UKCampsite.co.uk
2024 Advent Calendar

Advent Calendar

24 Daily Prizes PLUS a Christmas Day Star Prize worth £999

Request a Reminder