Roger Ford Posted June 30, 2015 Share Posted June 30, 2015 Can't find any info on Magnetti Marelli lithium batteries, but 4Ah -> 32Ah sounds a bit strange. Suspect it's actually 4Ah, and they're claiming some kind of equivalence (probably in cranking current) to a conventional 32Ah battery. Link to comment Share on other sites More sharing options...
ric355 Posted June 30, 2015 Share Posted June 30, 2015 I can't tell what the battery chemistry is on the Marelli one. LiFePO4 (lithium iron phosphate) seems to be generally what is being offered by other manufacturers. Supposedly because it is thermally and chemically more stable and therefore safer.Lithium-Ion is a generic term for lithium batteries. Link to comment Share on other sites More sharing options...
The_ASH Posted June 30, 2015 Share Posted June 30, 2015 Had a bit of a dig online and found a Magnetti Marelli pdf that mentions the battery here on page 15 :- http://www.samautoitalia.com/uploads/magneti.pdfFunnily the manufacturers blurb doesn't mention the chemistry either but I found other bike sites listing MM Lithium batteries as LiFePO4 Link to comment Share on other sites More sharing options...
The_ASH Posted August 10, 2015 Share Posted August 10, 2015 Probably not the correct thread to ask in but why are the Banner batteries so carp or is it purely the way they are used in a Seven that seems to shorten their life so. My last car needed one at 3.5 years and I've just replaced the one on my present car also at 3.5 years, is it the fact that unlike normal cars they don't see use every day, it's almost as if they should be a 3 year service item and at £60 I suppose that's not a bad idea but when many car batteries now last between 5 & 8 years or more why should a Banner only last for half of what seems the average. Link to comment Share on other sites More sharing options...
tbird Posted August 10, 2015 Share Posted August 10, 2015 Mines been on 5 years and still fine, I guess the FIA cutout helps, I suspect if its completely drained a couple of times its not going to recover Link to comment Share on other sites More sharing options...
Matty7 Posted August 10, 2015 Share Posted August 10, 2015 A friends 1.6SS K series has one of the Marelli ones in it - there is no chance it weighs in at 2kg, more like 1kg if not less. His car has had it since April with no issues. I'll be ordering one myself in the future when the car is ready as it's actually a very easy loss of 6kg or so over standard. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted August 10, 2015 Member Share Posted August 10, 2015 Probably not the correct thread to ask in but why are the Banner batteries so carp or is it purely the way they are used in a Seven that seems to shorten their life so.Good question. Some possibilities: The batteries are inherently not very long-lived. Multiple deep discharges, as Tim says. ECUs tripping becomes a limiting factor, even though the engine still cranks. They get cooked.Jonathan (PVR 25 on a conditioning charger, and no current problems) Link to comment Share on other sites More sharing options...
OliverSedlacek Posted August 10, 2015 Share Posted August 10, 2015 I do know that Banner recommended a bigger capacity to Caterham as they believed they would get discharged too deeply, but Caterham wanted to keep the weight and cost down. I dare say Banner aren't best pleased at their reputation amongst Caterham owners, but can't do anythingabout it. Link to comment Share on other sites More sharing options...
The_ASH Posted August 10, 2015 Share Posted August 10, 2015 Matty7 - I really did think about trying one but wanted 'a battery' almost straight away and didn't fancy buying yet another charger as the Accumate is not for charging Lithium Ion batteries. I do like stuff to be a standard size so the Marelli battery very much ticks that box and is so light also.JK - Some interesting points, Longevity is questionable plus in my case I don't know what happened to my batteries historically but many people do not understand that the Banner has to be maintained, levels checked etc. Deep Discharges, I think I tipped mine over the edge just by leaving the Accumate plugged into the car but turned off which helped to drag the battery down into the 11's volt wise from which it was very hard to raise again and then once the voltage was reliably 12 or more it just fell over when any load was shown it. Rather oddly the last car would crank ok when the battery failed and the ECU was working ok but the immobiliser started acting oddly, this car the immobiliser has been fine all the way through but the battery only had enough energy to turn the engine over perhaps one turn so it's like the last battery could do amps but not volts and this one volts but not amps. I did also consider the PVR25 but again I'd have to buy another charger although I did wonder about creating a small wooden storage box to hold fuses and bulbs and also fill out the battery clamp as the standard battery does.OliverS - That's very interesting. You can see both sides of the argument, you'd not want a big heavy battery in a Seven but equally a suitable capacity is needed to avoid the item being over stressed in normal use. Really by buying another Banner I've bought some more time to consider what to do next and hopefully by then even more people will have experience of the various options available and they might even be cheaper by then as well. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted May 15, 2018 Member Share Posted May 15, 2018 Bounce... any more recent experiences with lithium batteries?Jonathan Link to comment Share on other sites More sharing options...
OliverSedlacek Posted May 21, 2018 Share Posted May 21, 2018 My lithium battery is still going strong Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted May 22, 2018 Member Share Posted May 22, 2018 That's good to know. There must be some more experiences by now...Failing that there's reputation and brand to support buying decisions.Meteor Motorsport have the Varley Lithium Li5 at £99 + VAT.Demon Tweeks now have a big range and after some discussion today of which non-lithium batteries are used in 7s they came up with:Varley list the Li-16, which is the same size as the PC680 battery and 16amp/hr, this battery with charger is £655.00 + vat Or Super B offer the B15p version again @16amp/hr , this cost - £595.99 + vat, and the charger to suit is £99.99 + vat.Jonathan Link to comment Share on other sites More sharing options...
griffchris Posted May 22, 2018 Share Posted May 22, 2018 Ditto, I have a Varley Li5 still going strong after 2 years in my 420R. Cut off switch used when not in use, always struggles to start when the battery and engine are cold, but once the battery has got some heat into it, after 3 or 4 goes at turning the engine over, it will start. I've no hesitation in recommending one! Link to comment Share on other sites More sharing options...
7 wonders of the world Posted May 22, 2018 Share Posted May 22, 2018 Im using this one on my HC Duratec - kicks it over with no fuss at all.https://www.ebay.co.uk/itm/JMT-Lithium-Ion-Battery-HJTX20H-FP-For-Harley-FLHS-1340-Electra-Glide-Sport-1990/302152911991?epid=2010717415&hash=item4659b78c77:g:WbMAAOSwW9RagyU- Link to comment Share on other sites More sharing options...
aliwes Posted June 12, 2018 Share Posted June 12, 2018 I've just bought this from Amazon at £144 with next day delivery; BC Lithium Batteries BCTZ20HL-FP-S LiFePO4 Fingers crossed.... Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted June 12, 2018 Member Share Posted June 12, 2018 BC Lithium Batteries BCTZ20HL-FP-S LiFePO4 Motorcycle Battery£144 1.2 kg "This battery has 420 cranking amps, 7 Amp Hours" in the Q and As....JMT Lithium Ion Battery HJTX20H-FP For Harley FLHS 1340 Electra Glide Sport 1990£170 1.4 kg 7 Ah CCA: 420 A...Jonathan Link to comment Share on other sites More sharing options...
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