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sweyn asked

Last Full Charge Unknown

My Victron Smart Lithium 200Ah 12v battery says “Last Full Charge Unknown” and “Cell Status Unknown”

My whole system is new, and I’m not convinced it has correct SOC. The system from first connection believed the battery is at 100% extremely quickly.

It is DVCC.

Lynx Smart BMS and Distributer, Multiplus 12/800/35, MPPTs, CerboGX, Orion DC DC,

The Multiplus goes into Absorbtion very quickly, but then never goes to float.

Any ideas?d99dfc7c-7bb1-43d2-a59d-41086aa83437.png

cerbo gxSOCDVCCsmart lithium
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1 Answer
Stefanie (Victron Energy Staff) avatar image
Stefanie (Victron Energy Staff) answered ·

@Sweyn

Reasons for the unknown cell status:

  • Battery hasn't been initially charged
  • Battery has not been fully charged for last 30 days

See also chapter 5.2.2. Cell balancing in the manual.

The multi will never float as it is voltage controlled by DVCC. From a multi point of view it's either bulk or absorption, from a DVCC point of view it's either 13.50v (which your batteries are on) or 14.20v.

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sweyn avatar image sweyn commented ·
In accordance with the manual, since it is a single battery, I didn’t pre-charge it.

Is there a way to re-start the process to make it fully charge, or do i just leave it in absorbtion for ever till it finally tops up?

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