shade
Well-known member
Maybe. Do you think that would be a better LV disconnect than using a BatteryConnect and relying on an inverter's internal switch?
Victron Energy: Alternator/Solar Charging - LFP Battery System
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Justin Cook
Member
Hahahaha yeah... that's not the first time I've said that. Great products as a general rule, but sometimes they're not quite keeping up with the times/demand.
shade
Well-known member
The Victron BMV-712 can be used as a control device. I'm sure there are other ways, too.
BMV-712 Smart - Victron Energy
Communicate wirelessly between products and simplify system installation and enhance performance using the BMV-712 Smart. Find a dealer now.
Manual page 16 (pdf 18) discusses the relay.
luthj
Engineer In Residence
Post 30 discusses using the bmv to control a relay with inverted logic.
sprinter-source.com
Help setting up LiFePO4 system w/ Victron Components
The BMV 712 supports triggering its relay output as follows. 16. SOC relay (Discharge floor) When the state-of-charge percentage has fallen below this value, the relay will close. The time-to-go displayed is the time to reach the discharge floor. Default Range Step size 50% 0 – 99% You may...
dreadlocks
Well-known member
I tested my BMV-712 for this w/my dumb charger.. I used both battery voltage monitors to measure voltage on both sides of the charge relay.. I had it cut the relay at 14.4v and the power supply was 14.6v.. it would latch because once it dropped the battery from the charger the charger side would jump up to 14.6v.. This let me plug into shore power, charge the battery up then drop the battery and run the trailer off the power supply until I unplugged it then it would go back to running off the battery.
Ive changed it up since and now I'm feeding charge in through my solar charger.. gives me better control.
Ive changed it up since and now I'm feeding charge in through my solar charger.. gives me better control.
shade
Well-known member
While waiting for the Orion-Tr Smart to become available, I'll continue to spread the Wisdom of xkcd.
"Before I install any patch, I always open the patch notes and Ctrl-F for 'supervolcano', 'seagull', and 'garbage disposal', just to be safe."
xkcd.com
"Before I install any patch, I always open the patch notes and Ctrl-F for 'supervolcano', 'seagull', and 'garbage disposal', just to be safe."
Worst Thing That Could Happen
shade
Well-known member
Nothing in my system would be particularly useful for recharging a Tesla Model 3, but I'm certain that a Victron Energy sourced system could be built to do it.