Does the 1995 CBR900RR , need a voltage regulator replacement to use a Lithium Battery ( the type of battery like a Lithium Ion ElecThium HJTX12(L)-FP-S for example ) ?

i have a Lithium Ion ElecThium HJTX12(L)-FP-S actually in my 95 CBR900RR ( it was in when i bought the bike although i thought it had a regular acid battery ) and as i couldn't ride the bike for 3 months because of a motorcycle accident ( with another bike ) and the bike had not been riden much in july and august , i thought i would unmount the battery and charge it .
But i discovered it is a Lithium battery and i only have a Tecmate Optimate 6 Select TM-370 battery charger , made dor Acid batteries and not adapted to Lithium ones .
As i thought it was an old acid battery in the bike , i just ordered a Yuasa YTX9-BS acid battery i had planned to charge and install in the bike but i just read that if the stock bike's voltage regulator delivers more than 14 to 14,4 Vdc at about 2000rpm and higher , the voltage regulator on the bike has to be replaced for'people who want to use a lithium battery instead of the stock acid battery !
As i don't know if the previous owner ( or the one before ) had the voltage regulator replaced on the bike, to be able to use a Lithium battery , i don't know if i can simply replace the lithium battery with the Yuasa YTX9-BS i ordered , or if i have to put back a voltage regulator of the same type as the stock original one ?

To put it more simply , if a Lithium battery ( of the type i specified the reference of ) could work with the stock voltage regulator , I suppose the previous owner would have left the original voltage regulator in the bike but if the stock voltage regulator was delivering more than 14 to 14,4 Vdc voltage at 2000rpmand higher , i guess he replaced it with one compatible with the Lithium battery !

Any idea what voltage the stock voltage regulator is delivering at 2000rpm and higher, is it between 14 to 14,4Vdc or is it a higher voltage than that ( what would have made the previous owner to replace the stock voltage regulator with one delivering between 14 to 14,4Vdc , instead of the stock voltage regulator , if it was delivering more voltage than that ) ?

 

No need to change anything. I've been using lithium on 5 of my bikes for past 10-yrs without any issues. Full-charge voltage of lithium is slightly higher than lead-acid. And lithium can take charge-rates 10x higher than lead-acid. You're not gonna hurt it.

Measure actual output-voltage of regulator to have actual number.

Don't use "smart" multi-mode chargers for lead-acid that has desulfate mode. That will hurt lithium. Otherwise any tender 2-stage charger should work fine.