#173371  by petercw
 Tue Jun 15, 2021 1:24 pm
Chris.. you say I can use my VSR, however everything I've read suggests I'll only get 50 to 70% from this whilst driving and that to do it so the battery won't get damaged I should be installing a dc to DC charger that would take over from the 2 mppts (30amp & 40amps) I have.
Our vehicle is a Ford Transit Kea Dreamtime registered Dec 2005 turbo 2.4L ..
On the Juntek 200a The vsr charging seems to start at around 40amps but drops down as the battery storage increases to just a couple of amps imput at about 90%.

If I can just swap out only the AGM batteries for lithium 150amps then I would go that way as I have good solar.
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 #173374  by petercw
 Tue Jun 15, 2021 1:41 pm
Any photo shoots in my previous comments please ignore..

This is the lithium battery that fits in the step hole..
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 #173375  by petercw
 Tue Jun 15, 2021 1:45 pm
Chris, unfortunately it doesn't fit and I think the 100 amp is just too small in the amps..
 #173377  by Andrew and Debbie
 Tue Jun 15, 2021 2:14 pm
petercw wrote:
Tue Jun 15, 2021 1:24 pm
Chris.. you say I can use my VSR, however everything I've read suggests I'll only get 50 to 70% from this whilst driving and that to do it so the battery won't get damaged I should be installing a dc to DC charger that would take over from the 2 mppts (30amp & 40amps) I have.
Our vehicle is a Ford Transit Kea Dreamtime registered Dec 2005 turbo 2.4L ..
On the Juntek 200a The vsr charging seems to start at around 40amps but drops down as the battery storage increases to just a couple of amps imput at about 90%.

If I can just swap out only the AGM batteries for lithium 150amps then I would go that way as I have good solar.
What do you mean ' the dc dc charger would take over from the 2 mppts? The DC to DC charger would work with the MPPT solar controllers. With our DC to DC charging system, the solar controllers keep working as long as there is sun, and battery needs the charge. If the solar is putting 40 amps into the battery, and the engine is started, the DC to DC charger adds it's 50 amps, so there is a total of 90 amps going into the battery.

Cheers,
Andrew
 #173378  by petercw
 Tue Jun 15, 2021 2:36 pm
Thx Andrew that's the bit I couldn't understand, now I do. I couldn't think why you would remove the solar controllers but they, the experts, in the infos on Google say that this would control them but they didn't mention when not driving.
 #173393  by petercw
 Tue Jun 15, 2021 8:42 pm
So with lithium do you use the sealed setting out of the 3 .. gel, flooded, sealed on the mppt controller for solar to the lithium battery.
On one I have a user setting as well.
I have a mppt 30a and a mppt 40a.
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