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sgaugian avatar image
sgaugian asked

Specifications For Outback System Victron Energy 12V/110Ah Deep Cycle Batteries in Series 48V system

Have asked reseller about battery specs. Info varies quite a bit. Outback says need better specs, hopefully someone here can help. 48V system in series.

Need Absorption Voltage & A time. (what I have been told 14.6 x 4)

Rebulk Voltage. (no info so far)

Float Voltage & F time. (13.8 x 4)

EQ Voltage & EQ time. (Told not recommended)

Current limit. (told 11Amp on 110 Ah battery x 4)

Any help to clarify so I don't trash the new batteries would be appreciated.

AGM Battery
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1 Answer
wkirby avatar image
wkirby answered ·

For 12V Victron AGM Deep cycle:
Absorption Voltage: 14.6V. Adaptive absorption time is recommended.
Rebulk Voltage: It is common to trigger 0.4V below Float, (13.4V).
Float Voltage: 13.8V. For daily cycle, keep this Voltage. If storing for long periods then drop to 13.2V.
EQ Voltage: Not recommended for AGM or Gel. Used to combat stratification in FLA type batteries.
Current limit: Recommend 0.2C (22A).

Also recommend temperature compensated charging if the charger supports that.

https://www.victronenergy.com/upload/documents/Datasheet-GEL-and-AGM-Batteries-EN.pdf

2 comments
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sgaugian avatar image sgaugian commented ·
Thanks wkirby, I'll just multiply by 4 since all batteries are in series as 48volt system
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kevgermany avatar image kevgermany ♦♦ sgaugian commented ·

Don't multiply the current by 4, the batteries are in series. But you're correct to multiply voltages by four.

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