Widow maker journey to the 200hp club

Thanks @barbagris ive read you said to do just that when riding in the cold, Im glad you don’t see any issue using this battery, in some of your post you seemed ok with the li technology and I was using 2 batteries agm and was wanting to loose the weight and the rats nest so the wife asked about Xmas gift and I wanted this thing, with the fuzeblock install and this battery it should be real clean now and have no issues starting the bike which @Claviger is building now and will be more compression and I run a bat wing with big amp and big speakers, so hopefully this battery can take it, thanks again appreciate all your input on these threads that helped me make this choice

A vehicle battery (also known as a starter battery) is for starting. It dumps amps. That 900amp rating is a wee bit suspicious without full technology and chemistry spec's but all you really need is a good 200amps to turn over any starter motor that fits. Li will keep the voltage up - which is important on modern ECU's.

Li Starter batts have a lower aH rating - they are NOT to be considered as a UPS for poor charging systems. If you NEED the UPS side - you need a BIG deep cycle type battery. (My old Guzzi had a poor alternator from factory - and needed a 27-32AH battery if you were going to do town work).

The sound system depends more on the Alternator supply and other demands.

Remember that the engine itself draws more or less current depending on rpms and load. I have no first hand experience of how compression affects this - my gut says little. But make sure you have a voltmeter visible. The alternator is there to cover many needs - not just accessories.

I discovered this pretty early on with my R3 (a 2009) - And it's a big part of why I moved all lighting to LED. I had Stock Halogen lights and the Triumph Halogen Fog Lights. so 230Watts draw from them alone. 15W more for position and tail. And maybe another 2-3watts for the blackbox cams etc - I don't fit sound to bikes, No cellphone, gps etc. With the lights all turned on the voltage at battery was good and healthy from just over tickover and under normal and legal-ish riding was also good and healthy. But at a certain point high speed cruising - It was somewhere around the 140kph mark the voltmeter would suddenly and repeatably dip. Drop rpms a bit - up came volts, Switch off fogs - up went volts. I never ran extended with the voltage classed as low so I've no idea how much overdraw I was producing.

Fitting LED lighting resolved my issue - but bear it in mind for the sound system.

Understood, @DEcosse helped me with figuring out my amp draw over this year and with a stator replacement, rectifier upgrade, led lighting and he helped me add a tach gauge that has a volt meter built in I’m hopeful this battery just buttons all this up. @warp9.9 runs a 900cca and a regular battery and it works great as it has been in his bike 9 years I believe. We will see, thanks for the advice.

Kevin frazier said:

Understood, @DEcosse helped me with figuring out my amp draw over this year and with a stator replacement, rectifier upgrade, led lighting and he helped me add a tach gauge that has a volt meter built in I’m hopeful this battery just buttons all this up. @warp9.9 runs a 900cca and a regular battery and it works great as it has been in his bike 9 years I believe. We will see, thanks for the advice.

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No sir, I run a total of 920 amps by adding the 600 cca lithium ferrous battery in the air box.

warp9.9 said:

No sir, I run a total of 920 amps by adding the 600 cca lithium ferrous battery in the air box.

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I can't remember the make or size of yours - but iirc it was also a real amps dumper build. An early A123 cell build iirc. 20 cells?

barbagris said:

I can't remember the make or size of yours - but iirc it was also a real amps dumper build. An early A123 cell build iirc. 20 cells?

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I wish I was near it to count. but its a 1000 miles away. looking for pictures now

warp9.9 said:

No sir, I run a total of 920 amps by adding the 600 cca lithium ferrous battery in the air box.

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Oh total 920amps, a 600 and a 320 my mind slipped, I just remembered it was one heck of a number, big amperage for sure either way, thanks for responding

warp9.9 said:

No sir, I run a total of 920 amps by adding the 600 cca lithium ferrous battery in the air box.

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Had to go look, iirc you mentioned you’ve had it 9 years, wow, and it does say 10 expected life, 400ci airplane I had to laugh, that’s warp9.9 right there, go big or go home lol

Kevin frazier said:

Oh total 920amps, a 600 and a 320 my mind slipped, I just remembered it was one heck of a number, big amperage for sure either way, thanks for responding

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As a bonus, if you need to do a little welding, just hook up some jumper cables

So the holiday are over and even though the widowmaker has been fighting back Claviger is winning. A head bolt was acting like a real stripper and at 125lbs was really acting a fool but rob being rob wasn’t having it and to his credit this is why I was so lucky he said he would do the job, I would have certainly screwed the stripper and it would have cost me a lot of money. But we’re on schedule and all is looking good. More to come guys. I don’t think any home mechanics are making that tool, it was indeed needed, even for the inspiring one!