I have never ran a lithium battery. From the research I have done they are not a very good choice for winter use.shoria recommends that the voltage never falls below 12.86 volts.
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If I am reading that right the battery isn't at 100% until almost 14.3volts! I am pretty sure our bikes can't maintain a battery at 14.3 volts to keep it at 100% and by looking it drops off fast. This is what they say about cold weather.
A.*Down to about 20 degrees Fahrenheit (-7C) most users find that they can start normally on first crank. If your headlight comes on at key-ON, it is good for the batteries to flow some current before cranking in cold weather. The suggested headlight-on time before cranking depends on the temperature. If starting at 40F/5C, 30 seconds will help wake the battery and increase cranking performance. If at 0F/-17C, leave the lights on for 4~5 minutes before cranking. The result will be a better first crank, and longer battery life.* If the engine fails to start on first crank, that first crank has warmed the battery, and the second attempt will be much stronger. Other accessories that can be turned on before cranking can also be used for this purpose, such as heated gear, radio, etc...* Insuring that the battery is fully charged after storage also improves first-start performance in cold weather.
Also I read once somewhere that they should be charged between 32*F and 113*F which I seldom ride my timbersled @ those temps.
I will stick with the tried and true lead acid core batteries for now. Lithium are cool and all but just don't work well for what we need/use them for IMHO. Get a YTZ7S for winter and Put the lithium back in this summer. Also don't forget about using the right weight oil.
If you wanna do a little test throw a quart of you motorcycle oil in the freezer with a quart of T6 5-40 and wait 24hrs there will be a noticeable difference.
Take care
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