Application
Electric Mobility
Traction loads are the harshest case for current ratings: high peak, fast repetition, and vibration that works loose any connection that was not mechanically secured.
This page is not finished
The engineering constraints below are written, but this page has not yet been reviewed by a technician and contains no product-specific recommendations.
Blocked by: Technical review (docs/evidence/) — see ACCEPTANCE A-09
We publish this page in its incomplete state rather than filling it with plausible-looking detail. If you need an answer now, ask us directly.
What this application demands
Each line is a constraint that can rule out a board on its own. They are listed in the order they usually eliminate options, and each one has to be checked against the manufacturer's document for the specific model.
Peak current dominates the selection
Acceleration and hill-start draw repeatedly at the peak figure. The relevant question is not the peak value but how long the board sustains it and how quickly it recovers between events.
Vibration and connection integrity
Terminals, sense leads and comms connectors must survive sustained vibration. Mechanical mounting and strain relief are part of the specification, not an afterthought.
Regenerative charging
Braking pushes current back into the pack. The BMS must handle charge current arriving from the load side, which some topologies do not expect.
Enclosure and ingress
Boards mounted on a vehicle are exposed to water, dust and road spray. Ingress protection is a property of the assembled product, not of the bare board.
Where selection goes wrong here
- Treating a traction load like a stationary load when reading current ratings.
- Ignoring the charge path during regenerative braking.
- Assuming a board's bare-board rating survives inside an unventilated enclosure.
What to send for a fit check
Four items. With all four, one reply is usually enough to say whether a given board works — or which constraint rules it out.
- Cell chemistry
- LiFePO4, LTO or Li-ion — the series range differs between them.
- Series count
- How many cells in series, or the nominal pack voltage.
- Continuous load
- What the pack powers, and its rated wattage or current.
- The other end
- Inverter, charger or motor — the protocol has to match on both sides.
The same board, four different constraints
Every application page describes what the environment demands. None of them names a model — that decision belongs on the product page, with a source attached.
- RV / Campervan / Marine
In a vehicle or a boat, the load is intermittent and often inductive, the alternator is a second charging source, and the install is usually inside a confined space that nobody wants to open twice.
- Off-grid Solar / Backup
A stationary system trades mobility for scale: higher series counts, larger continuous currents, and a duty cycle that is close to continuous. The failure mode that matters is thermal, not mechanical.
- Battery Repair / PACK
A workshop needs different things from a retail buyer: documentation at the board revision level, repeatable configuration, and a way to test a repair without risking a customer's pack.