Any Hands On Experience With Die Hard Gr 31 AGM?

mena661 wrote:

full_mosey wrote:

mena661 wrote:
2-3 year batteries should be like new. Not sure what you're saying.

Where did you get the 2-3yr figure?

HTH;
John

Your profile that you said to look at.

I get 4+ and 3+ years.

Deka purchased 2009-01:
mysql> select (to_days(now()) - to_days('2009-01-15'))/365;
+----------------------------------------------+
| (to_days(now()) - to_days('2009-01-15'))/365 |
+----------------------------------------------+
| 4.4466 |
+----------------------------------------------+
1 row in set (0.00 sec)

Optima purchased 2010-01:
mysql> select (to_days(now()) - to_days('2010-01-15'))/365;
+----------------------------------------------+
| (to_days(now()) - to_days('2010-01-15'))/365 |
+----------------------------------------------+
| 3.4466 |
+----------------------------------------------+
1 row in set (0.00 sec)

Now, that may not be considered as 'old', but I would be happy to replace them with no regrets.

HTH;
John

Get two MEX to avoid the deep discharge.

full_mosey wrote:

mena661 wrote:
2-3 year batteries should be like new. Not sure what you're saying.

Where did you get the 2-3yr figure?

HTH;
John

Your profile that you said to look at.

My East Penn discharge curves show 11.0v is around 90% discharged, +/- depending on discharge rate.

Jim

mena661 wrote:
2-3 year batteries should be like new. Not sure what you're saying.

Where did you get the 2-3yr figure?

HTH;
John

2-3 year batteries should be like new. Not sure what you're saying.

Is resting, morning, 11.8V considered a low SOC?

Then yes, I did draw down my Deka AGM before I learned about proper charging. The first two years I knew nothing about battery charging.

I have drawn my Optimas down so low they would not run my 12V fridges.

See my profile. They all get older every year. I beat the snot out of them. I am underwhelmed about all the stories about how long batteries last.

When they die, they will be replaced with 100AH $169 12V AGMs from the local discount club. One in the TT and one in the van.

HTH;
John

MEXICOWANDERER wrote:

One year warranty

Some of the cheaper one's indeed only have a 1 year warranty but I have to admit, the only one's I've read about that died in a year were from the DIY EV crowd but they beat the******out of them (ie run the batteries WAY outside their design specifications).

I nearly gagged when I went online looking at Li-Ion. Around nine dollars per amp hour.

"This Is The Best Yadda, More, Yadda, Deeper, Yadda, Lighter, Yadda Powerful Yadda"

Three sizes smaller font.

One year warranty

3+ years on my gp27s Lifeline. Discharged rarely past 60%SOC. Mostly around 80%.
Over 4000 ah of use.. Trimetric keeps track.
Battery still has factory spec for ah.. I test it with a 20ah rate discharge periodically.
Solar and my PD 9260 care for it. When the rig sits the PD is used for maintenance.

I will never go back to FWC's.

Jim