AGM Super Cycle Charge Voltages

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hartleb asked Feb 16, '23

AGM Super Cycle Charge Voltages

I have just bought a 125Ah AGM Supercycle Battery. I’m not sure why the data sheet and the information on the side of the battery don’t look the same.Could someone please advise me on the best Absorption, Float and Storage voltages for this battery. I have a Blue Smart IP65 charger and a an MPPT Blue Solar charge controller.

Brian

Float Service

Cycle service Normal

Cycle service Fast recharge

Absorption

14,2 - 14,6 V

14,6 - 14,9 V

Float

13,5 - 13,8 V

13,5 - 13,8 V

13,5 - 13,8 V

Storage

13,2 - 13,5 V

13,2 - 13,5 V

13,2 - 13,5 V

AGM Battery

1676566873401.png (59.5 KiB)

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kevgermany ♦♦ commented · Feb 16, 2023 at 06:26 PM

Please post a picture that has better focus. Thanks.

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hartleb commented · Feb 16, 2023 at 06:47 PM

I've also just noticed that the data sheets for 'normal' AGM have the same numbers. So which is correct, the Data sheets or the numbers on the battery body?

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Answer 1 · 2023-02-16T19:10:14Z

Stefanie (Victron Energy Staff) answered · Feb 16, 2023 at 07:10 PM

Hi @hartleb

The datasheet have the correct numbers. Those on the battery label are the max. values which should not be exceeded.

A good starting point for not heavily used battery is 14.4V absorption, 13.6V float and 13.2V storage. Correspondingly higher (within in the limits) in the case of very heavy use and high discharge currents.

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