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jimbob01

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  • Gender
    Male
  • Location
    london
  • Occupation
    student of life
  • Boat Name
    bessey
  • Boat Location
    london

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  1. I have quite a few valence u27 12 xps some with very low cycles surplus to my needs/wants.... i have 8 which i have integrated into a simple system...giving fantastic results. If anyone would like some to integrate into their off grid system pm me.jim from 250_400 quid each all cycles are logged.
  2. Hi georgianstar the hatches were from a 1950/60s passenger liner... i bought quite a few as i wanted them as windows. Try trinity marine... I may have one in storage somewhere Let me know if u get stuck...
  3. Its not the flush option mind....that would need to be fabricated...
  4. I do have an electric transit... no tax 3 quid to charge... Insurance is about 500 Does about 80 -90 miles in the warm Bit less in the cold
  5. Ive put a bedroom under my tug deck... its superking... i think it would be great for teenagers ... i fitted a bronze opening window that opens from the inside..fire escape ...see the stars in summer. have yet to add a secondary glazed surround which is the plan.....then no drip in winter issues.....not sure how to send a phone pic just yet... Too many mb on the attatchment...
  6. Also for peoples info i bought a heap of these 130ah batteries with various cycles on and ive found some with well over 2000 cycles on which still discharge over 110ah And charge to 80% soc in an hour About 2hrs to 100% soc Which shows me they last... The manufacturers claim 5000 cycles plus All these are reasons why ive gone this direction. Be happy Jim.
  7. In reality a few things need to be known in the looking after lithium batteries... the paranoia that developed when i first got mine soon left after i got my head round them. The charging voltages need to be regulated.. on mine i choose to stay around 13.6 which will charge the batteries to 80% soc. They arent like fla batteries which need the 3 stage charge etc and need to stay near 100% soc. Its better for them (experts say) to stay between 20-80% soc In fact ive found as long as you keep the voltage down when charging... (custom set ur mppt)and have a low voltage disconnect.. around 11.5-12v then there doesn't seem to be a lot to worry about.. other than balancing... battery manufacturers will love to sell you an expensive ballancing system. Or you can do it manually if you can access the cell banks within. The valence xp cells i have have an internal bms which deals with ballancing The cell bank voltages can be viewed on a pc by simply plugging in to the com port on the battery if you have the software. I have the software.. Quite simple .. Lvd Hvd A way of ballancing depending on battery. I have wooden battery boxes which will be lined sometime Happy days..
  8. Maybe the word balance is meant instead of equalise? The batteries i have are made up of about 400 cells in 4 banks of 100 cells at 3.65v per cell bank... the 4 banks are in series which give 14.6v max voltage under charge. My understanding is this voltage is necessary occasionally for a period of time in order to bring the 4 banks within the pack in to balance with each other within a reasonable amount of mv. Having watched via computer software the cell banks in my batteries dont need to be brought up to max voltage so often. Like i said im pretty new to these too.
  9. These batteries log all cycles so as they do around 5000 .. the 100 or less these ones have means they are hardly used. They arent like regular lead cells...they dont need to be charged to 100% 13.4 is like 60% ish If you want to reach 100% they need 14.6 for about 2 hrs then the balance on the bms becomes active... the software enables this all to be viewed along with current in and out. The general consensus amongst the experts (im not one just new to these as well) seems to be stay between 20-80% soc for super longevity Their needs are different to fla / gel batts Seems if a few things are understood they should last decades... ☺
  10. Well im charging with various sources but reliant on solar mainly... i have 2 Morningstar mppts and an outback inverter... Most all stuff goes through the outback with a lvd set at 24v ish... im still not finished with the system... Ive been sort of collecting solar bits and pieces last 20yrs and have a reasonable system still not totally finished but close.. I get 120 amp into the batteries with full sun @24v if i start the gene i get 90 more from the outback and 90 from a victron skylla charger .. Since fitting these batteries 5 months ago ive not needed to run the gene. Literally..and in winter! You can take these right down to 0% and put 70 amp per battery back in... i have a 24v 520ah bank....so as these are 12v they can take around 250amp ish charge current when charging. Good thing is they charge very fast. They have a bms inside each battery which when u have the software is active as they charge. Actually ive experimented and the cell banks hardly change quickly so i think its ok to balance every couple of months. They are supposed to be charged at 14.6 max Im going not near that voltage as experienced folks seem to have found the key to ultra long life is possible by low pressure.. say 13.4...13.6v which is nearly fully charged anyway. I had 20 yuasa gel batteries b4 these 1 bank was 12yr old when i finished with them...they served well but always a worry about soc ...hence the search for some reasonably priced lithium.... These ones are £1500 each new but after a long hunt i took a shot on a batch of second hand ones at less than a fifth of the price. Ive found that they seem to cycle over and over with still 80% or more of original capacity ... More importantly to me....usable capacity. As we have :3kw immersion heater 2kw washing machine Toaster kettle electric cooker etc etc... So ive got 13.6kwh of battery and i can use over 10kwh of power which is great... my diesel overheads are right down ☺
  11. I have 8 lithium batteries installed on my boat and plan on installing more... ive replaced 20 agms with similar power delivery... i looked into this a lot and the chemistry seemed to be very important. I went for lithium phosphate as they are very safe compared to say lithium iron cobalt oxide... They charge so fast . I can run a welder via the inverter for hours if need be. The washing machine... Electric cooker... then leave them flat (20%) .....wait fot the sun to top them up with no fear of sulphate issues... then they charge up... much quicker and the power is there ready to use again... I found ex Sainsburys electric van batteries with very low cycles ....valence u27 12 xp to be exact... as long as you have the software the bms is activated inside and no problems... Lvd on inverter Hvd on mppt Happy days. Jim
  12. Thanks for that Richard... very clear, that shall be my next wet weather inside job . Jim
  13. Thanks bwm... im still not sure it's simple enough for me to tackle though .....
  14. I've put my finger against the coupling as it's running and the noise stops... i was hoping the coupling was worn....
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