Long Term Storage of Lithium Batteries

[berni109]

Just a though but have u checked u'r ebl can support charging that much battery capacity.
My ebl did not have lithium setting so went votronic direct to battery.

 

[Pebble99]

Just a though but have u checked u'r ebl can support charging that much battery capacity.
My ebl did not have lithium setting so went votronic direct to battery.

I have checked with Udo and he recommended changing the setting to 42A and reckoned that would be fine

 

[paddymcc]

Can you not just adjust the BMS setting to isolate the charge source at 80%? Then there is no manual intervention required.

Ian

Not on the Roamer battery I don't think.

 

[Pebble99]

Can you not just adjust the BMS setting to isolate the charge source at 80%? Then there is no manual intervention required.

Ian

Roamer have also confirmed that you should not use their BMS to control the charge to max 80% as it would void the warranty.

 

[bigtwin]

Roamer have also confirmed that you should not use their BMS to control the charge to max 80% as it would void the warranty.

Interesting.

There are other suppliers who don’t take that view. Life Batteries permit user changes to various parameters (the BMS has a number of (last line of defence) hardware protection parameters separate from the user permitted changes) and provide a 5 year warranty.

Ian

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[RedFrame]

The Ablemail does look a decent bit of kit. My EBL99 also trickle charges the starter battery when on EHU. I probably won't buy a new mains charger even though the EBL doesn't have a lithium setting since I won't be using EHU that much. If I end up installing the Ablemail trickle charger, I will need to whether I need to disable the EHU trickle charge from the EBL and also from the Votronic B2B.

Just a heads up, incase you do go for the Ablemail WITH the additional Bluetooth module.

If you find the unit reporting "no serial connection" disable "low power mode", this cures the issue. If I remember the conversation with Ablemail correctly it increases the draw from 20milliamps to 200milliamps per 24hrs, but don't quote me on that...

Cheers
Red.

Cheers
Red

 

[Hoovie]

Just a heads up, incase you do go for the Ablemail WITH the additional Bluetooth module.

If you find the unit reporting "no serial connection" disable "low power mode", this cures the issue. If I remember the conversation with Ablemail correctly it increases the draw from 20milliamps to 200milliamps per 24hrs, but don't quote me on that...

Cheers
Red.

Cheers
Red

useful thing to point out

In order to do this, you need to first REMOVE power from the AMT (I just pull the 0V lead off) and then when the 0V lead is put back, you have 30 seconds to connect, go into the settings in the App, disable low power mode and save the settings. It can be a bit of a race sometimes

The Bluetooth module is absolutely not required in order to run the AMT, or to reprogramme it to one of the 8 available presets, but some people like to have the extra control and monitoring (maybe sold 1 ABB Bluetooth Module to every 4/5 AMT Maintainers)

 

[Pebble99]

The battery Master works very well with lead acid starter and leisure batteries as the voltage between the two is similar.
Many of us had battery Master fitted as part of a typical lead starter / leisure setup. And we have successfully carried it over to a lead starter / lithium leisure setup.

The theoretical problem with the battery Master is the starter trickle charge is initiated when there is a small difference between the voltage of the starter and leisure batteries.

The issue with lithium battery is the standing voltage of something like 13.4v is >> than standing voltage of the lead acid starter battery 12.4-12.7v, therefore there is an outside risk the leisure battery could be fully depleted over an extended time by the 1a parasitic draw of the starter battery.

That said, I've not experienced any issues

There is another product on my market (I can't remember it's name) that works in a similar fashion to the vanbitz battery Master but is configurable for lithium voltages

Hi, when you isolate your leisure battery from everything, does the vanbitz battery master still trickle charge the starter battery when there is a voltage difference or is the trickle charge also dependant on the leisure battery being charged by solar, B2B or EBL?

 

[funflair]

Hi, when you isolate your leisure battery from everything, does the vanbitz battery master still trickle charge the starter battery when there is a voltage difference or is the trickle charge also dependant on the leisure battery being charged by solar, B2B or EBL?

I think that would depend where you pick up the Lithium +ve, on my first attempt I picked up the isolated side of the switch but once I got the right connection which was actually the solar collection point it all worked fine, it will only ever maintain the starter battery to about 0.65v lower than the Lithium but no you don't need anything charging the Lithium to maintain around 12.5v on the starter, if there was a charge the Lithium would be higher and likewise the starter would be higher.

 

[gerry mcg]

Hi, when you isolate your leisure battery from everything, does the vanbitz battery master still trickle charge the starter battery when there is a voltage difference or is the trickle charge also dependant on the leisure battery being charged by solar, B2B or EBL?

My victron solar MPPT is connected directly to the Leisure battery and charges my Leisure battery directly (without involving the EBL)
The EBL is energised by +ive from the Leisure battery, and the current flows from the leisure battery to the EBL. The battery Master takes its power from the EBL,
Battery master trickle charges the starter battery even if the solar is disconnected.

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[the1andonly]

My system uses Votronic duos and Votronic B2B no battery master type device.
I originaly Used an Isolator on battery negative and issolator and midi fuse on solar feed.
I now use a much more sophisticated control method. I have a bmv712 and use the relay to switch an ssrr (solid state relay) based on SOC. I Have 2 victron duo controllers one for a 330w panel (switches off solar to controller) the second 100w 120w has a switch to battery whilst it charges the starter battery.