Do not identify a replacement charger from its housing or plug alone when the old nameplate is unreadable. Rebuild the configuration from the battery, vehicle and installation records, then label every field as confirmed, observed or unknown. A supplier can quote responsibly only when safety-critical values are documented rather than inferred from appearance.
Who is this guide for, and what decision does it support?
This guide is for a service-parts purchaser who must prepare a reliable RFQ without guessing from an unreadable old charger label. It is a document and release-control framework, not permission to modify wiring, bypass protection or test an uncertain configuration.
What evidence must be compared?
| Evidence set | What to record | Release boundary |
|---|---|---|
| Recoverable identity | Vehicle asset number, battery model/revision and any old purchase record | Hold if records refer to a different asset |
| Permitted observations | Whole-unit, connector, cable and mounting photos; partial markings | Photos support identification but do not prove internal output |
| Required electrical data | Battery chemistry and limits, charger output, AC input and control interface | Hold if a seller must guess any safety-critical value |
Recover configuration evidence from battery, vehicle and installation records; separate confirmed, observed and unknown fields. Keep source filenames, revision dates and the exact model or serial range. An unlabeled screenshot or a statement copied from another model is not controlled evidence.
How should the buyer prepare the review?
Start with the installed equipment, not a sales description. Photograph only accessible labels and connectors with power safely isolated under the site procedure. Collect the vehicle, battery and charger documents, then mark each field as confirmed, observed or unknown. Assign one person to own the comparison and another authorized person to release the configuration where the organization requires it.
Do not ask a supplier for a broad promise such as “works with 48 V” or “fits this plug.” Send the completed evidence table and ask for a response tied to the offered model and revision. If the answer changes a voltage limit, current limit, connector assignment, BMS requirement or market document scope, treat it as a configuration change and retain the new approval.
Which mistakes should stop the decision?
- Ordering by enclosure shape
- Treating a matching plug as proof of pinout and protocol
- Opening the unit or probing contacts to recover data
A commercial deadline does not close a missing technical field. Put the affected configuration on hold, state exactly what is missing and continue only when the responsible party supplies traceable evidence. Site electrical inspection, commissioning and internal service remain work for qualified personnel.
What is the safe next step?
Send a controlled RFQ with the evidence table, photos and explicit unknowns. Request a model-specific drawing, input/output limits and written configuration confirmation. Keep the order on hold until the exact battery and vehicle relationship is resolved by the responsible technical reviewer.
What should be saved with the order or asset?
Keep the comparison sheet, source documents, offered charger revision, connector or interface drawing, written decision, named approver and date. Record later battery, software, connector, harness or destination-market changes. This turns the next replacement or support request into a controlled review rather than another guess.
Related product and support
Review the industrial battery charger category, use the related configuration guide for the adjacent task, and send a documented enquiry through the project contact page. These links do not establish model compatibility.
Editorial basis checked 12 October 2026: the approved industrial weekly plan and existing site guidance. Verify current model documents and target-market requirements before procurement or use.
FAQ
Is a matching voltage label or connector enough?
No. Battery limits, charger profile, control interface, connector assignment and the approved vehicle configuration must agree.
What happens when a required field is unknown?
Record the unknown and hold that configuration. Do not fill the gap with an assumption or an improvised charging test.