I have hit the 6 year mark on my house batteries and they are starting to heat and not last over 6-7 hours without charging.

I purchased 6 new 8D MK batteries direct from MK for $313.64 each. Price was right and performance curves are very close to Lifeline. and they weigh the same. Has anyone used this brand? I hope I can give the batteries a good report in about 6 years.