the brands i have right now are shorai=10 years old,alien motion 5-7 years old,antigravity 4 years old,and just bought two more shorais for my 2 new aprillias....they dont like the constant drain and it will drain them eventually...u will need to keep it on a tender...with a store mode...most likey a dedicated charger from battery manufactuer..a regular battery charger can destroy the cells in the lithium batteries...and can also overcharge them as well and explode...they only need a balance charge which i only do once a year and the rest of time just leave on store mode...especially on my track bikes...so far i like the shorai and alien motion batteries the best...and just purchased the bike master lithium ion on ebay for $149 for the breakout

 

I had a twin power brand just because that was what was available at the time. Seller included a tender - a junior style specifically for lithium ion and I might have used it twice in a year. As mentioned earlier within a couple minutes of hooking it up it would register full charge. The twin power sight has a vid on cold staring procedure. Not a big deal but helps explain what to do and why.

 

 

cant go wrong with shorai..you can go back to drinking regular beer instead of light beer too with your 7+ lbs of weight reduction..lol