RCT MP-T1000S Inverter trolley

Reboot - MDK said:
Hi

I got the smart battery sense today. It takes the voltage and temperature (I just have to make sure of the right way to stick it on the battery) of the battery.

View attachment 1538093

View attachment 1538095


The earlyest time on the two pictures was just after I switched the trolley back on after in stalling the device. You can see the charging went to 14.39v and slowly went down and on the second picture you can see that the float voltage is going between 13.83 -13.84

I'll take screenshots after and during loudsheding parts also and post it during the week. I read somewhere that it keeps it data for 33 days, will se if it is so.

Unfortunately you can't export the data. I saw on one blok that people are requesting it and the say it's on the to do list.

Hope this will be helpful for your guy's
Click to expand...
Must be a lead acid battery?
 
joshuatree said:
Cool Stuff. Link to this device, and why this specifically?
Click to expand...
the links to the device

Smart Battery Sense available to buy online at @TAKEALOT We offer fast, reliable delivery to your door.
1686258549688.png


Or

www.victronenergy.com

Smart Battery Sense - Victron Energy

Improve the charging-efficiency and prolong the life of your batteries with the Smart Battery Sense. Find a dealer near you.
www.victronenergy.com www.victronenergy.com

Got it to monitor the lithium battery better in the trolley to see how it works with the trolly

This would have been better sender but is more expensive
Victron Energy Smartshunt 500A/50mV IP65 available to buy online at @TAKEALOT We offer fast, reliable delivery to your door.
1686259135379.png
 
Oh okay, I checked the previous posts - Victron Smart Battery Sense.

Edit: posted before refreshing.
 
wingnut771 said:
Interesting. So it reaches float voltage in 15 minutes?
Click to expand...
I installed the battery on the 20/05/2023 all ready. So it was all ready fully charged before I installed the smart battery sense.

Will see how the charging goes after I had loudsheding again
 
wingnut771 said:
Interesting. So it reaches float voltage in 15 minutes?
Click to expand...
I think the battery was full already and the power cycle just
Gave it a blip

I believe some chargers also have a time linked to the cv phase so it doesn't just drop of as soon as the current drops of
ie sustains higher voltage for x time then goes to float

While the inverters i have, have no time linked to CV so it lasts like 5-10min and then down to float

If battery was full and for some reason i trigger a charge cycle it is quick like his did

ie before the fan can even ramp up the charger settles down again
 
Geewiz have let me know that they use the Hubble S-100A's in their Kool Energy refurbishments. Does anyone know if there are any differences between the Kool Energy & RCT units?

EDIT: I've asked them directly for more information and will update here if they get back to me
 
Last edited:
akescpt said:
Thought lithium need to be in a certain range voltage wise. Especially when used as drop in lead acid replacements.
Click to expand...
They use the same voltage as AGM so normally you don't have to change anything, but if you can change voltages then there are some tweaks that help preserve it.
Max Bulk 14.6V
Recommend Bulk 14.1V
Float 13.6V-13.8V
Recommend Float 13.4V

Are you able to set voltages on this?
It is advised to observe fan operation and see if behaviour doesn't change and if it does then to add an additional fan powered direct from battery. At least the old mecer IVR decoder looking ones are like this.
 
3 months later my RCT is dead, not the battery, the charge controller refuses to charge any battery including lithium.
Sent it back for warranty repair, hoping they can refund this nonsense device.

Whilst my initial testing with lithium was positive, I don't trust this device's charge controller for long-term lithium use.
 
DeusExMachina said:
3 months later my RCT is dead, not the battery, the charge controller refuses to charge any battery including lithium.
Sent it back for warranty repair, hoping they can refund this nonsense device.

Whilst my initial testing with lithium was positive, I don't trust this device's charge controller for long-term lithium use.
Click to expand...
Did you add a fan?
 
It may be a situation of needing heatsinks too

ie like you paste on raspberry pi after the fact

Live and learn the fact that lithium can soak up charge can be a killer if the circuit wasn't designed to deliver the rated amps on the box
 
leon.davibe said:
It may be a situation of needing heatsinks too

ie like you paste on raspberry pi after the fact

Live and learn the fact that lithium can soak up charge can be a killer if the circuit wasn't designed to deliver the rated amps on the box
Click to expand...
There is already a heatsink.
 
leon.davibe said:
It may be a situation of needing heatsinks too

ie like you paste on raspberry pi after the fact

Live and learn the fact that lithium can soak up charge can be a killer if the circuit wasn't designed to deliver the rated amps on the box
Click to expand...

Is there any way of artificially limiting the power delivery to match Lead Acid? If so - would this be done via the BMS, or an external limiter?
 
Zertop said:
Is there any way of artificially limiting the power delivery to match Lead Acid? If so - would this be done via the BMS, or an external limiter?
Click to expand...
If the charging board has a thinner wire that connects up with the battery cable you could put a buck converter that can limit the current too on that wire , but yea how much modifications a person is willing to do is the thing
 
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