alfmech Posted November 1, 2011 Share Posted November 1, 2011 our local factor seem unable to answer my question so thought i would look to experience instead my vehicle is a 90 defender with a 300tdi auto fitted to it its got a champion 9500lb winch fitted to it which is only going to get (i hope) very occasional use and the usual extra lights i am looking to find a pair of heavy duty batteries that will start this 100% of the time and be able to use the winch if needed sadly i cannot afford the luxury of optima/gel batteries so have to settle for old style batteries the problem is i have no clue which batteries i should get and local factors seem unable to help they simply offer the battery listed for the vehicle and thats it whats the biggest/best pair of batteries that will fit in the existing seat box? that dont cost the earth sorry if this has been posted before i did use the search but didnt find the answer Quote Link to comment Share on other sites More sharing options...
Eightpot Posted November 1, 2011 Share Posted November 1, 2011 Numax batteries are superb value for money and are very tough. Not sure if a pair will fit in a Defender battery box though?? They can be used as either a starter or the aux battery, I swap mine over from time to time which I think helps prolong life even further. Chdeck out the x-eng site for prices/specs. Quote Link to comment Share on other sites More sharing options...
bishbosh Posted November 1, 2011 Share Posted November 1, 2011 Get a pair of the biggest batteries you can fit in the battery box and wire them in parallel. Five minutes with a tape measure (make sure you check height too!) should establish what will or won't fit. Make sure the terminals are the right way round for your leads too. Don't worry about brand names, just get what ever your local motor factor has. You could also fit an X Eng split charge for little money that will isolate one battery when the engine is off stopping you flattening it inadvertently. Quote Link to comment Share on other sites More sharing options...
nickwilliams Posted November 1, 2011 Share Posted November 1, 2011 Tayna give sizes for all the batteries on their site, and I can recommend them for price and delivery. When comparing battery sizes from different sites, make sure you know whether the dimensions given include the terminals, and any bulges in the battery case (usually around the bottom or the top for some types of battery clamp). Nick. Quote Link to comment Share on other sites More sharing options...
Tris Cocks Posted November 1, 2011 Share Posted November 1, 2011 Ive got two of of these batteries http://www.tayna.co.uk/Numax-CXV-X-1000-Amp-P7632.html the same ones that X-Eng sell but are a bit cheaper. They fit well under the seatbox and have never failed me, ive the two linked together in parallel and would reccomend them to anyone! Quote Link to comment Share on other sites More sharing options...
alfmech Posted November 1, 2011 Author Share Posted November 1, 2011 i have a x-eng split charge relay i have had for ages was going to use it on my series but thinking it might be better served using it on this and isolating one battery just for winching and leaving the other for starting, obviously swapping them over occasionally Quote Link to comment Share on other sites More sharing options...
bishbosh Posted November 1, 2011 Share Posted November 1, 2011 The split charger doesn't work quite like that - it only isolates one battery when the engine is off. With the engine running, both batteries are in parallel, receiving charge and available to use for any electrical load so in theory you can flatten both whilst doing heavy winching, but given your description, that shouldn't be too much of a risk for you. Quote Link to comment Share on other sites More sharing options...
UdderlyOffroad Posted November 1, 2011 Share Posted November 1, 2011 You can always add a manual 'kill switch' for the split charge to isolate the two batteries before winching. Quote Link to comment Share on other sites More sharing options...
Tom1809 Posted November 1, 2011 Share Posted November 1, 2011 You will struggle to fit two normal acid battery's in the battery box with out either modifying it or going to optimas, I did however manage to fit two vartar 650 amp battery's in mine. Then used a tmax split charge. Quote Link to comment Share on other sites More sharing options...
alfmech Posted November 1, 2011 Author Share Posted November 1, 2011 it looks like a pair of those will sit in a standard defender battery box so unless anyone knows differently it looks like a pair of cxv-x is the way to go with reguard the x-eng split charge relay isnt the whole idea of it to charge both batteries when running and isolate one when it isnt so you always have enough juice to start? Quote Link to comment Share on other sites More sharing options...
Ruuman Posted November 1, 2011 Share Posted November 1, 2011 Another vote for the numax CXV, bloody brilliant for the money Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.