Dewalt DW007K Cordless Circular Saw 24 Volt

i have bought 2 saws burnt one out after 4 years building houses it out lasted 3 batteries from the original 5 i had ,when it burnt out i went and got another .i have now 4 new batteries all 5 original packed up . i found it to be a good weight very reliable , good in wet great for floors ,truss roofing and 1st fix the bettery was the week point . i also have a 24 volt drill that is still running but not been used as much