SV_Stray_Cats
New Member
- Joined
- Dec 2, 2020
- Messages
- 30
Which REC BMS? The Q? I looked at different BMS this morning and while the REC Q seem to have more clear/clean wiring than the Orion, I didn't find the price price, self consumption, info on how it controls relays or other details.
I don't have a CAN charger, but may connect the BMS to my Sevcon Gen4 motor controller. I'm not exactly sure what it would do - advisory request to reduce power? I know BMS theory is supposed to use controls and not alarms, but there could be times when I would decide to destroy the battery bank to save the boat. I haven't thought it all the way out, but I'd like low voltage disconnect, only when I'm not on the boat, and then maybe excepting the bilge pump....unless it's having a problem cycling the same water with a clog...
I don't have a CAN charger, but may connect the BMS to my Sevcon Gen4 motor controller. I'm not exactly sure what it would do - advisory request to reduce power? I know BMS theory is supposed to use controls and not alarms, but there could be times when I would decide to destroy the battery bank to save the boat. I haven't thought it all the way out, but I'd like low voltage disconnect, only when I'm not on the boat, and then maybe excepting the bilge pump....unless it's having a problem cycling the same water with a clog...
I think that would depend on if/how the two battery banks are connected. If they are completely separate except sharting the same definition of 0V/ground, I think you need two BMS and two shunts, two chargers, two everything. If the 12V bank is charged from a 48V charger powered by the 48V bank, I think a 48V shunt would capture all energy use, but not in realtime of its use. Well realtime from the 48V bank's perspective.They only thing I need to figure out with them is I need two shunts instead of the 12v and 48v bank sharing one. Also noting that a boat always has common ground...