Darn old M6 Die Hard battery will not start the tractor. Just Click Click Click…

  • Active since 1995, Hearth.com is THE place on the internet for free information and advice about wood stoves, pellet stoves and other energy saving equipment.

    We strive to provide opinions, articles, discussions and history related to Hearth Products and in a more general sense, energy issues.

    We promote the EFFICIENT, RESPONSIBLE, CLEAN and SAFE use of all fuels, whether renewable or fossil.

Don2222

Minister of Fire
Feb 1, 2010
9,096
Salem NH
Hello
Just looked up M6 - December 2006 - wow almost 17 years old!!
The battery voltage on the tractor battery is 10 VDC not 12 VDC. Each of the 6 cells is approximately 2 VDC so that means I have One dead cell so the battery is No Good.
The date code is M6
M = Dec and 6 = 2006 so it is 17 years old. That lasted a long time?
Also the charger light is green and needle keeps pegging and the manual says that means the battery is dead.
Therefore I picked up another Gold Sears Die Hard AGM battery at Advance Auto and got $10 back for the core charge.
Bingo - It Starts right up!
Pic 1 - Oh No - Approx 10 VDC - One cell is dead!
Pic 2 - HF CEN-TECH charger with engine start
https://www.harborfreight.com/21050-amp-12v-manual-charger-with-engine-start-59424.html
Pic 3 - Oh-No - charger Green light = Bad Battery!
Pic 4 - New Die Hard AGM - Date code 10/23
Pic 5 - Sales slip shows price less core charge. :)
Did anyone else have this issue?

34FF5E21-540A-401F-96D7-DA15231AA4BA.jpeg 902B5801-C88D-44BC-8235-D86150FD5C53.png A80B1A5F-EB58-4DF5-9176-DBB03658EC04.jpeg 8E49CA1C-0A7B-469C-910F-6984323DECCC.jpeg B3F48235-15E4-4230-8A0B-320EFA99B513.jpeg
 
That battery had a pretty long life!
Btw, to extend the life of the new one, check the level periodically and add distilled water as needed. I'd check it every 6 months. You can also get yourself a densitometer ($5) to check the acid concentration. And, always keep it fully charged!

Edit: I guess for batteries they call it a hydrometer. But it's just checking the density of the solution.
 
Last edited:
  • Like
Reactions: Don2222
About 4 years ago I started replacing my ATV and motorcycle batteries with lithium. They are very powerful and light.
 
  • Like
Reactions: Don2222