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BMV 702 too fast to 100% SOC


viper_za
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Hey guys

 

My BMV SOC is jumping way too fast to 100% SOC.

This seems to happen on the absorb stage of charging whenever I look away.

When they are only drained a little like 95% SOC it does look like it's going to 100% slower.

 

I have the trojan T105RE's 48v Bank

225aH

Charger set to the following

Max Charger current: 20A

Bulk charge: 56.4v

Float: 52.8v 

 

On the BMV settings

Setting 02 Charged Voltage: 52.6v

Setting 03 Tail Current: 4% (default)

Setting 04 Charged detection time: 5min (default 3min)

 

I suspect the problem is the tail current.

Should I lower this to 1% or maybe even 0.9%

 

Thanks

Thys

 

 

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Hi Thys

 

 

Unfortunately you have to fiddle.

 

Your charged voltage looks fine

 

Tail current looks high Mine is set on 2.8% . If I set it on 2.7%  it never goes to 100%.

 

Charged detection 10 min and I am contemplating moving it higher.

 

MY BMV still goes to 100% too early but not by much,

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Hi Thys

 

 

Unfortunately you have to fiddle.

 

Your charged voltage looks fine

 

Tail current looks high Mine is set on 2.8% . If I set it on 2.7%  it never goes to 100%.

 

Charged detection 10 min and I am contemplating moving it higher.

 

MY BMV still goes to 100% too early but not by much,

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As I recall you can sync it manually, an done you've done that it should be more accurate for a while? Also, the timeout should be set to at least 7 minutes if I recall the Victron training stuff correctly, possibly even longer.

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