Lithium batteries only partially charging? (20 Viewers)

[Swamp]

Morning funsters! I’m hoping one of our resident experts can help with something that’s got me somewhat baffled.

Our new van has a 200ah Enerblock JLFP12-200H Extreme lithium battery.
This is charged by 3 units:
A Victron Orion Tr12-18 isolated DC/DC
A Victron smart solar MPPT 75 15 from 200w solar panels
A Buttner Elektonik Batterie Control Booster

All three units appear to work correctly charging while driving, on solar and on hook-up but looking at the BMS App the battery only charges to around 62%?

I can’t work out if this is a true picture of what’s happening or just a quirk of the 3rd party BMS App chat the battery manufacturer recommends? I’ve attached a pic of the BMS App in case that helps.

Anyone experienced anything like this or have any suggestions?

Many thanks

 

[LithiumConvert]

The bms may well need to see the battery charged to 'full' to set the percentage to 100%.

Put it on EHU and let it fuly charge the battery. (many hours).

Check that the EHU charger is set to 'lithium' (or 'gel')

 

[Lenny HB]

Agree with the above, BMS often drift out unless the battery gets a regular charge to 100%.
If you fit a shunt you will get a better picture of the true state of the batteries.

 

[LithiumConvert]

Fit a proper battery monitor with a shunt and dispaly.

Battery Monitor - BM1

AMPS - Battery Monitor BM1 The Battery Monitor - 1 (BM1) is AMPS’ high precision power management device, intended for use in the DC negative. Installed correctly, the shunt will accurately measure discharge and charge at any given time.The BM1, as a modern battery solution, is suitable for all...

sterling-power.com

is an inexpensive example of many available.

 

[Boldly]

Fit a proper battery monitor with a shunt and dispaly.

Battery Monitor - BM1

AMPS - Battery Monitor BM1 The Battery Monitor - 1 (BM1) is AMPS’ high precision power management device, intended for use in the DC negative. Installed correctly, the shunt will accurately measure discharge and charge at any given time.The BM1, as a modern battery solution, is suitable for all...

sterling-power.com

is an inexpensive example of many available.

The monitor linked to says it does all battery types. How accurate do you think it would be on lead acid for capacity say?

^{_{Subscribers  do not see these advertisements}}

 

[Kannon Fodda]

What are the Victron battery profile settings forvthecsolar controller and B2B? Are they lithium or defaulted to something else?

 

[MichaelT]

The monitor linked to says it does all battery types. How accurate do you think it would be on lead acid for capacity say?

Get a victron one from off grid you get discount

 

[Rollingwheels]

We had a similar problem we had to turn off battery on the isolator and make sure there was no solar going in by disconnecting the cables or covering the panels make sure not on ehu and leave for a few hours for all remaining charge to dissipate then turn back on, all good now, this was from the manufacturer and it was all factory fitted kit, it was a Super B lithium battery

 

[LithiumConvert]

I have only used one on Lithium, but Sterling Power products are usually very good.

 

[Swamp]

Thanks for the many replies
I’ve had the van on hookup for a couple of days but it is still topping out at around 62% charged according to the App.

I suspect the App is misbehaving - when I first downloaded it and linked it to the battery it only showed a max of around 2/3 charge no matter how long the van was on charge. Then for a week or so it started recognising the battery charge “properly”, maxing out at 100% and showing what looked like sensible depletion after use. It has now gone back to its initial behaviour.

I am booked in at Offgrid Power Solutions for several upgrades including a shunt so that should get me sorted

^{_{Subscribers  do not see these advertisements}}

 

[LithiumConvert]

I suspect the App is misbehaving

Fit a proper battery monitor - with a good physiical display.

I have one of these in the mototorhome

Energy Meter - 12V / 150A

Energy Meter - 12V / 150A C8464 in Battery management & monitoring Battery monitors

www.roadpro.co.uk

and one of the small ones (above) on mobility scooter (now converted to 48Ah lthium).

Both are very good.

NB Read the instructtions on the NDS one - unusually, now,, the shunt goees on the +ve battery terminal.

 

[Kannon Fodda]

Fit a proper battery monitor - with a good physiical display.

I have one of these in the mototorhome

Energy Meter - 12V / 150A

Energy Meter - 12V / 150A C8464 in Battery management & monitoring Battery monitors

www.roadpro.co.uk

and one of the small ones (above) on mobility scooter (now converted to 48Ah lthium).

Both are very good.

NB Read the instructtions on the NDS one - unusually, now,, the shunt goees on the +ve battery terminal.

As he already has some Victron kit including solar and B2B a Victron Smartshunt would be the best option. Easily dealt with by Offgridpowersolutions when he is there including a funster discount.

 

[LithiumConvert]

My point to the OP was to suggest he ensures he gets a shunt with a physical display.

In my view so-called smartshunts (and Apps) are not necessarily the best. I like physical displays.