Originally Posted by Max Headflow

It might work in a small motor but with a big motor and bigger starter, it will shut down mid compression, cause the coil to spark and kill the starter.. You'll end up stranded. Maybe bring a small charger with you and find a plug to reset..

Since you guy are talking baggers, IMO the best bet is a good AGM and cables.

Originally Posted by pingman68

One of the things I had to do when I switched to lithium in my RV was change out the charger in the main panel. The original one was not rated to charge at the higher capacity that lithium requires and would only get it to about an 80% state of charge. I haven’t looked into it, but is the charging system on the bikes able to output enough to charge a lithium battery or would you need to supplement it with a lithium rated trickle charger?

Originally Posted by paulmedford

This is very possible, but think about this, those small battery jumper devices use a small lithium battery, and would crank over a large 3L high compression Diesel engine (I have) no problem. Also, lithium batteries have a higher voltage than lead and they deliver more power in short burst than Pb, but yes I agree they suck at capacity! lol so for a big engine, your engine should in good working order instead of needing to be cranked a while before starting.

Originally Posted by 702

Originally Posted by Max Headflow

The good thing about the lithium jumper packs is that they don't have the same protection circuitry as the Noco.. The previous battery in the bike was a twin power LI battery. It lasted 4 years, twice that of any AGM, but was getting a little weak on first starts on a cool morning. It would have been replaced with another TP but they were impossibly to find. Bike would start fine with a fresh AGm. It has a Shorai in it now. No issues.

Originally Posted by pingman68

One of the things I had to do when I switched to lithium in my RV was change out the charger in the main panel. The original one was not rated to charge at the higher capacity that lithium requires and would only get it to about an 80% state of charge. I haven’t looked into it, but is the charging system on the bikes able to output enough to charge a lithium battery or would you need to supplement it with a lithium rated trickle charger?

Originally Posted by RKZen

The lithium battery on my Sporty keeps a full charge as I ride it regularly. The charging system is rated at a dinky 30 amps. I also have the security system on it and have gone a couple months w/o riding and the bike fires right up. I think the baggers have a 50 amp charging system, at least my '13 King does, so it should be no issue getting juice to the battery to recharge just like on the wet batteries.

One thing on the lithium batteries is they hold a charge much longer than the wet batteries, unless you have some parasitic drainers like security systems or something.

Not sure on the other lithium batteries, but the Antigravity has a Restart feature where the battery "sleeps" when it senses a low charge to give you enough juice to start the bike.

Originally Posted by RKZen

The lithium battery on my Sporty keeps a full charge as I ride it regularly. The charging system is rated at a dinky 30 amps. I also have the security system on it and have gone a couple months w/o riding and the bike fires right up. I think the baggers have a 50 amp charging system, at least my '13 King does, so it should be no issue getting juice to the battery to recharge just like on the wet batteries.

One thing on the lithium batteries is they hold a charge much longer than the wet batteries, unless you have some parasitic drainers like security systems or something.

Not sure on the other lithium batteries, but the Antigravity has a Restart feature where the battery "sleeps" when it senses a low charge to give you enough juice to start the bike.

Originally Posted by paulmedford

Yes, the regulator output on a bike is about 13.8 to 14.5V. Good enough for lithium on the bike. For a "battery tender" however you need a lithium one as the voltage is higher as well as some weird charge characteristic of lithium. But when on the bike, it also has a built in charge control which works with the constant DC out put of the bikes regulator.