I have used these in very harsh conditions for over 10 years and have never had a failure. I have trusted these batteries and really put them through some Extreme use and have been able to call on them to do things at half charge that a fully charged regular battery failed to do.
Went with the PC1200 on my 2017 Can Am Defender the battery that came on this model didn't have enough cold cranking amps for 20 degree weather. Now it starts great,