Tech Forums > Maintenance Tips & Tricks > lithium ion battery
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JoHNY Edinburgh, United Kingdom Premier Member Posts: 5,285 Daytona 955i (04-06) 30 May 2012 18:20
Anyone using one yet, any good? Are they worth the price?
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Mot South East, United Kingdom Premier Member Posts: 760 Sprint 900 02 Jun 2012 20:13
Yes using one...no not worth the price unless you are a sad twat like me been working fine for a year http://www.mottleybiker.com/page39.htm Cheers Mot
JoHNY Edinburgh, United Kingdom Premier Member Posts: 5,285 Daytona 955i (04-06) 03 Jun 2012 17:59
The only advantage I can make out is that they're lighter
StumpyDave Lincolnshire, United Kingdom Premier Member Posts: 3,640 Speed Triple T309 04 Jun 2012 14:50
Just bought one for my Cafe Racer project as it is ridiculously small and claims the same output as the lead acid lump it replaces. Unfortunately as I haven't finished building I don't know what it's like.
SuprSi Hampshire, United Kingdom Posts: 3 TT600 (00-01) 09 Jul 2012 16:02
If you're good at soldering, just purchase 4 (or 8 for over 750cc) A123 M1 cells: http://www.electricwingman.com/power/a12... A 4 cell 2300mah pack can deliver bursts of 120A which is more than enough to start most bikes. I've been using one on my TT600 for over a year now and it cranks it over great. For bigger bikes you can use 8 cells, two lots of 4 in series, then put in parallel. That would give enough current to start pretty much any car! The charging voltage of these packs is exactly the same as a lead acid, 14.4V, but the nominal voltage is 13.2V and they hold their voltage very well under load which makes them perfect for cranking engines over.
JoHNY Edinburgh, United Kingdom Premier Member Posts: 5,285 Daytona 955i (04-06) 09 Jul 2012 22:10
Excellent tip there Mr Sup. Seen the same set up, 8 stuffed in a red box which are being knocked out for silly money
ablang Devon, United Kingdom Premier Member Posts: 110 Speed Triple 955i (02-04) 16 Jul 2012 17:43
I found this on YouTube showing 4 cells being used to boost a car at -21c http://www.youtube.com/watch?v=qcvmvrmTM... and this on building an 8 cell battery for a bike http://www.youtube.com/watch?v=UTDctiyUa...
JoHNY Edinburgh, United Kingdom Premier Member Posts: 5,285 Daytona 955i (04-06) 08 Aug 2012 23:05
Got it and jeez is it light, turns over better too. Although I was needing a new battery anyhow. Will see how long it lasts, with the charging mod I did years ago the last lead acid lasted three years.
----KK---- West SX / London, United Kingdom Premier Member Posts: 32,651 Enthusiast 26 Aug 2012 07:16
Did you end up soldering cells together or buy a ready to go battery?
JoHNY Edinburgh, United Kingdom Premier Member Posts: 5,285 Daytona 955i (04-06) 03 Sep 2012 17:47
I actually had bought the battery before I saw your post But the next battery I will do your suggestion
ablang Devon, United Kingdom Premier Member Posts: 110 Speed Triple 955i (02-04) 13 Sep 2012 22:50
A123 systems now do a "b" version with 2500ah and other improvements and from fleabay similarly priced http://www.bmz-gmbh.de/index.html?http:/...
pablito1981 Bristol, United Kingdom Posts: 99 Daytona T595 14 Sep 2012 17:24
Apologies for jumping in- if you just wire up these batteries will they charge off the alternator like a regular battery, or do you need a special circuit in-between?
JoHNY Edinburgh, United Kingdom Premier Member Posts: 5,285 Daytona 955i (04-06) 14 Sep 2012 23:35
They'll charge nae bother
pablito1981 Bristol, United Kingdom Posts: 99 Daytona T595 16 Sep 2012 16:23
Cool...too easy!
ablang Devon, United Kingdom Premier Member Posts: 110 Speed Triple 955i (02-04) 17 Sep 2012 23:31
Talking to RC people ideally you wire the cells separately (for top up) as well as in series (for use) but in practice as long as the cells are properly charged and balanced at the outset the bike will usually keep it right.
I'm going for an 8 cell for the injected Strumpet but trying a 4 cell for one of my carbed bikes
JoHNY Edinburgh, United Kingdom Premier Member Posts: 5,285 Daytona 955i (04-06) 20 Sep 2012 19:48
So far so good with ebay item I bought from the USA. Charging well and really fast cranking. I used to remove the lights fuse to do maintenance when I needed the ignition on. Now I can leave the fuse in place and the lights on for ages and it still cranks fast
Tech Forums > Maintenance Tips & Tricks > lithium ion battery
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