Battery Warranties ? What battery Warranties ?

[Marauder]

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Change is the only constant, allegedly. Which may well be true because my mind changes constantly !

I have been doing lots of research on Hab side of MH electronics, planning to upgrade (and many thanks for all the help from you guys).

But this MH was never meant to be a keeper. It was bought during pandemic as a stopgap. And recently I reflected that whatever I buy for this MH, may already be fitted to new MH (or not).

So I decided to bring it forward and change MH in summer 2023. Gel seems to be the answer, but possibly not until I have more permanent van. For now maybe fit some less expensive "Lead Calcium" HabBat for interim.

Yesterday, a battery supplier told me that the battery would be delivered "fully charged" at 12.6v. They chose to ignore my queries about when the Batts were manufactured, and how long they had been sitting discharging and ignored in warehouse !

But my understanding from MHF feedback is that 12.5v is 50% discharged, and so likely to have damaged Batt at that point. 12.6v is little better.

So, my questions:
> Is "Lead Calcium" Batt technology a good option for HabBat ?

> Is 12.6v SOC acceptable for a Brand New delivered Battery ?

> If I put brand new "Lead Calcium" on a reputable multistage charger (EG victron IP22) for a couple of days, what voltage should it be holding when the multistage / regeneration / recovery phases have completed ?

> If a Batt is advertised with (eg: 4 yr warranty), what does that mean? is warranty worth anything? Could I claim if Batt would not maintain voltage from answer of last question?
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[St3v3]

 

[GMLS]

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Change is the only constant, allegedly. Which may well be true because my mind changes constantly !

I have been doing lots of research on Hab side of MH electronics, planning to upgrade (and many thanks for all the help from you guys).

But this MH was never meant to be a keeper. It was bought during pandemic as a stopgap. And recently I reflected that whatever I buy for this MH, may already be fitted to new MH (or not).

So I decided to bring it forward and change MH in summer 2023. Gel seems to be the answer, but possibly not until I have more permanent van. For now maybe fit some less expensive "Lead Calcium" HabBat for interim.

Yesterday, a battery supplier told me that the battery would be delivered "fully charged" at 12.6v. They chose to ignore my queries about when the Batts were manufactured, and how long they had been sitting discharging and ignored in warehouse !

But my understanding from MHF feedback is that 12.5v is 50% discharged, and so likely to have damaged Batt at that point. 12.6v is little better.

So, my questions:
> Is "Lead Calcium" Batt technology a good option for HabBat ?

> Is 12.6v SOC acceptable for a Brand New delivered Battery ?

> If I put brand new "Lead Calcium" on a reputable multistage charger (EG victron IP22) for a couple of days, what voltage should it be holding when the multistage / regeneration / recovery phases have completed ?

> If a Batt is advertised with (eg: 4 yr warranty), what does that mean? is warranty worth anything? Could I claim if Batt would not maintain voltage from answer of last question?
_

Just for reference purposes, I've purchased 2 batteries from Halfords years apart, with warranties. Both failed towards the end of the period (and to be honest, at least one I had neglected a bit) but both exchanged without question. So that warranty meant something

 

[Marauder]

Both failed towards the end of the period

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interesting . . . .

So what was the mutual accepted criteria for 'Failed' ?

did they hold a lower voltage, or just stop working completely ?
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[GMLS]

I just said it didn't hold a charge anymore. He put a multimeter across the terminals and that's it

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[Lenny HB]

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interesting . . . .

So what was the mutual accepted criteria for 'Failed' ?

did they hold a lower voltage, or just stop working completely ?
_

Normally they do a CCA test (starter battery test) which a battery will often pass but still useless for leisure use.
I had a couple of AGM's fail 18 months old, only good for 10ah but passed a CCA test at 80% so they wouldn't change them under warranty.

 

[Lenny HB]

12.6 volts is a bit low I would expect 12.7 to 12.9 depending how long it's been sitting around.

 

[autorouter]

The resting voltage of a fully charged battery depends mostly on the acid concentration. So a lead-calcium sealed battery might be fine at 12.6V, where an AGM with a slightly higher designed concentration might be 12.8 or so. This is one of the reasons why chargers need to have different charging profiles for different varieties of battery.

 

[Raul]

The resting voltage of a fully charged battery depends mostly on the acid concentration. So a lead-calcium sealed battery might be fine at 12.6V, where an AGM with a slightly higher designed concentration might be 12.8 or so. This is one of the reasons why chargers need to have different charging profiles for different varieties of battery.

Very very true, a flooded with 1,24 acid mix it’s full at 12,6-12,65, while a agm with 1,28 mix it’s full at 12,9-13v. It’s a trade of in both cases, less acid less corrosion and longer plate life( stationary batteries), higher acid concentration higher corrosion and shorter life, but, higher voltages.