Typically the LiFePO4 batteries take the same charge voltage as lead acid. I put one in my 22 year old motorcycle and the charging voltage is right in line with what the Li battery manufacturers want. Plus the onboard battery management would handle any over-charge situation.
As for low temps, not really an issue for most people. If you live somewhere where average temps are lower than maybe 20 degrees, and you park outside ... you might have to turn the headlights on for a minute or so before starting to warm up the battery.
In my case I bought one with no output current limiter, technically made for snowmobiles .. but I wanted no output limiter because the bike is such a beast to start.
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