I'm not sure this is the correct link. When I click it, it just takes me to the first post in this thread.
If you want ballpark pricing,
here is an EU distributor with a-la-carte prices given in USD. They may ship to the US, not sure.
Oops, I've edited my post with the correct link.
Thanks for the link; the prices seem reasonable.
Wondering if 123Smart may not be ideal. It seems like a monitoring and safety shut-off system with top balancing feature rather than continuous cell balancing? I watched their intro video and read their manual. I've reached out to them for confirmation.
In 123electric's intro video their app shows voltages for 16 cells, between 3.225V and 3.335V, a 0.10V delta, and they say they're "within safe limit." This delta seems a lot higher than inter-cell differentials with other BMS’s which shoot for 10-20 mV. The manual states: “
V balance: This is the balancing voltage where you want all the cells to end up. Above this voltage the cell modules start to dissipate 1 ampere to balance the cells.”
The video also mentions your relays either shut off charging or discharging when any cell falls outside the voltage range. So it appears balancing only happens at the top, at low voltage if any cell falls below Vmin, it shuts off the loads rather than attempting to bypass the low cell.
Am I making a mountain out of a molehill?
Pros:
- 1 amp balancing current
- clean look w/o spaghetti wires everywhere
- integration with Victron ecosystem
- reasonably priced for an elegant system
Cons:
- no continuous intercell balancing, only top balancing
- appears to require soldering
- possible to damage the modules when working with the bank/cells?