Will this ruin the original charger (1 Viewer)

[PeterCarole29]

LG 616 DS/IU Lead acid charger in a Knaus 2006
I am removing the 2 x 80ah lead acid batteries and putting in 460ah lithium and was going to leave the original charger in but it says only suitable for up to 160ah. See photo
The lithium would also be charged by solar via victron mppt and b2 b
Will the charger burn out when on hook up charging the lithium and lead acid engine battery

 

[TheBig1]

As a rule they always say with lead batteries a charger of at least 10% of battery capacity. The old type charger you have is not ideal to charge lithium batteries anyway. But if you did, it would take a long time to charge from flat. So would likely overheat causing early failure

 

[Jev88]

As above, sounds like you can disconnect (pull fuse) the on- board charger as you won't need it and isn't lithium compatible.

 

[PeterCarole29]

As a rule they always say with lead batteries a charger of at least 10% of battery capacity. The old type charger you have is not ideal to charge lithium batteries anyway. But if you did, it would take a long time to charge from flat. So would likely overheat causing early failure

Its what i thought just needed it confirmed

 

[PeterCarole29]

As above, sounds like you can disconnect (pull fuse) the on- board charger as you won't need it and isn't lithium compatible.

I havent got my head around if its that simple yet
I think the way forward is to replace this charger with a victron one charge the engine battery via battery master
The thing i have to overcome is the connections that control the main control panel reference the charger battery 1 and 2 and there readings when you press the button on it

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[Just smiffy]

Best to disconnect the charger as I think it will interfere with the b2b Lenny HB will confer. If you rely on hook-up you’ll need to install a lithium charger…

 

[Captain Yoghurtpot]

.

 

[Lenny HB]

Best to disconnect the charger as I think it will interfere with the b2b Lenny HB will confer. If you rely on hook-up you’ll need to install a lithium charger…

Shouldn't make any odds.

 

[GeoffnDee]

It could be worth talking to www.apuljackelectronics.co.uk who do their own lithium battery charger (AE276-L ULTRA) and do adapters for original chargers.

 

[PeterCarole29]

Best to disconnect the charger as I think it will interfere with the b2b Lenny HB will confer. If you rely on hook-up you’ll need to install a lithium charger…

Yes untill I understand it all I will simply unplug the charger although could use if needed as long as the 460ah is only 25% down

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[PeterCarole29]

Shouldn't make any odds.

That’s what I thought in bed last night as long as it’s not got to work to hard
The plan at the moment is to add the lithium direct to the lithium battery

 

[autorouter]

In the first stage of charging (bulk) the charger turns on its full amps output, and waits to see what the battery voltage goes to. For a fairly flat battery (less than 70%) the voltage won't reach the absorption voltage. The charger continues to output its full amps as the voltage slowly rises. When it reaches the preset absorption voltage, it flips to the absorption stage. This may take several hours if the battery is very flat.

A good quality charger, like Victron or CTEK, can keep pushing its full output 24/7/365, it is designed properly so it can do that. Other chargers apparently can't do that, and become overheated if the full output time is prolonged for any reason. That's why there is a recommended limit on the amp-hour capacity of the charger. I have on numerous occasions fully charged a pair of flat 100Ah batteries using a CTEK 5A charger.

I like the Victron BlueSmart IP65 range of chargers, 4A to 25A. They are small, weatherproof and bomb-proof. They have a full range of profile settings including lithium, and you can watch them from an app via Bluetooth if you really want.

 

[Just smiffy]

Shouldn't make any odds.

I thought that the b2b will see the charge coming from the on board charger and will reduce its own output, therefore the b2b not using its full potential…

I’m sure I’ve read that on here somewhere….

 

[GrahamPye]

I thought that the b2b will see the charge coming from the on board charger and will reduce its own output, therefore the b2b not using its full potential…

I’m sure I’ve read that on here somewhere….

But you won't have the engine running while you are on EHU so the B2B won't be doing anything until you unplug from the mains and drive away...

 

[PeterCarole29]

But you won't have the engine running while you are on EHU so the B2B won't be doing anything until you unplug from the mains and drive away...

Possibly for a few seconds as i have been known to drive away still with cable attatched which is why now i always wind it round my drivers wing mirror when connecting to mains LOL

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[Just smiffy]

But you won't have the engine running while you are on EHU so the B2B won't be doing anything until you unplug from the mains and drive away...

Doh!!

Perhaps I was thinking of something else…

 

[ChrisL]

Doh!!

Perhaps I was thing of something else…

If you have a smart Victron mains charger and a smart Victron solar controller networked and synched the mains charger will turn the solar off when the battery is nearly full, and after a period at float will go into storage mode with a reduced voltage, pretty much all the settings are configurable to suit your particular battery's requirements.