A charger enable signal and a vehicle drive interlock are not interchangeable. One may permit charging; the other helps prevent vehicle movement in defined charging conditions. Before choosing an onboard charger, ask who controls each function, how it is wired, and which operating states the vehicle integrator must validate.
Two questions hidden in one feature request
Buyers sometimes ask for a charger that stops the vehicle from driving while charging. That sounds like one feature, but it involves the charger, charging connection and vehicle controller. A charger feature name alone does not establish how the complete vehicle behaves.
This guide is for golf cart, high-speed electric motorcycle and sightseeing vehicle procurement teams working with their vehicle engineer or installer. It is a specification checklist, not a wiring guide. The electrical interface and any safety-related function require review by the responsible integration team.
An enable circuit generally concerns whether a device is permitted to operate, but its direction and logic depend on the design. A drive interlock concerns the conditions under which vehicle movement is inhibited. Do not infer one function from the name of the other.
Turn the feature name into a documented requirement
| Requirement | Question for the supplier or integrator | Why it matters |
|---|---|---|
| Charger enable | Is this an input or output, and what state permits charging? | Prevents confusion about signal direction |
| Vehicle drive inhibition | Which component tells the vehicle controller to inhibit movement? | Identifies responsibility for the vehicle function |
| Electrical interface | What signal type, ratings and reference are specified? | Avoids connecting incompatible circuits |
| Connection detection | Does the system detect cable connection, AC availability or active charging? | These states are not equivalent |
| Fault response | What happens after a broken wire, power loss or signal fault? | Normal operation alone is not sufficient evidence |
A cable can remain attached when the AC supply is absent. Charging may also stop because the battery is full or the BMS has withdrawn permission. If a design only inhibits movement while charging current flows, that may not address the vehicle team's intended requirement. The integrator needs to define the required behaviour across these states.
What the supplier catalogue supports
The supplier catalogue lists enable circuit and an anti-walking switch feature in the 1100W and 1500W families. These labels justify an enquiry about integration options. They do not establish the pinout, signal polarity, circuit rating or safety classification of any particular configuration.
Ask for the exact model's connector drawing, electrical interface specification and functional description. Request clarification of the catalogue terminology: which signal does the charger provide, which signal does it receive, and what does the vehicle controller have to do?
If the answer only repeats anti-walking or enable, the requirement is still open. Keep it out of the approved order specification until the technical team has enough information to assess it. Do not describe the product to customers as a complete vehicle safety solution based on catalogue wording.
Define the operating states before sample approval
The vehicle team should write a short state list and record the expected charger and vehicle response. Include cable disconnected, cable connected without AC, AC available before charging, active charging, charge complete, BMS charge stop and a reported charger fault.
Add the documented response to power cycling and signal loss. The purpose is to find gaps between the intended vehicle behaviour and the charger interface, not to invent a universal sequence. The final requirement depends on the vehicle design and applicable requirements.
For every state, record whether charging is permitted, whether movement is permitted, the controlling component and the evidence used to confirm the result. If a state is not applicable, explain why rather than leaving it blank. An unresolved state is a reason to hold approval, not an invitation to improvise a wire connection.
Avoid connector-level assumptions
A spare contact in a connector is not automatically an interlock contact. A wire colour is not a pin assignment. A signal described as 12V does not necessarily accept connection to the vehicle's 12V circuit. Direction, reference, isolation and electrical ratings still need confirmation.
Ask the supplier and vehicle integrator to agree a versioned interface drawing. It should identify the charger model, harness revision and relevant controller interface. Changes to a connector or harness must be reviewed against that drawing, even when the connector shell looks unchanged.
For broader interface checks, use our charger connector compatibility guide. Do not repin a harness, bridge contacts or bypass an interlock to make a sample start charging.
Keep acceptance testing within a controlled procedure
Functional validation should be carried out by qualified personnel using the vehicle team's approved procedure. Prevent unintended movement and control access to the test area. Do not test by having someone attempt to drive a connected vehicle in normal service.
The procurement record should capture the tested charger and harness versions, vehicle/controller identification, expected states, observed results and unresolved exceptions. Supplier interface evidence supports the review but does not replace validation of the integrated vehicle.
After a successful sample evaluation, freeze the approved signal configuration in the purchase order. Otherwise a later order described only by voltage and current may omit the interface that the sample relied on. Charger conformity documents do not by themselves validate the vehicle's integrated movement-inhibition function.
What to include in the enquiry
- Vehicle type, controller details and responsible integration contact.
- Battery nominal voltage, capacity in Ah, chemistry and charging limits.
- Required enable and drive-inhibition behaviour, including non-charging connected states.
- Approved connector or harness drawings, if available.
- Whether CAN/BMS communication is also required, and its separate specification.
- Requested technical documents and acceptance evidence for the exact model.
See the industrial battery charger range for the commercial enquiry route. MOQ is 30 units. Branding labels are available from 200 units after artwork confirmation; mixed-model eligibility requires confirmation. Production is approximately 15-30 days depending on quantity and configuration, with shipping additional. Integration options need model-specific confirmation.
Questions buyers ask
Is an enable signal the same as a CAN message?
No. A discrete electrical signal and a communication message are different interfaces. Either may be used in a design, but the supplier and integrator must document the role of each.
Does an offboard charger remove the need to consider vehicle movement?
No. A connected charging cable can still affect vehicle operation. The implementation differs, but the vehicle team still needs a defined connection and movement policy. Compare installation choices in our onboard versus offboard guide.
Review the charger interface
Send the vehicle controller details, battery specification and required connection/charging states. Include the approved harness drawing and your integration contact.
Discuss your charger requirement