Battery & BMS
Charging, runtime, protection behavior, labels, installation and compatibility questions.
Technical Support
A structured support route for identifying the product, understanding symptoms and deciding whether guidance, testing or physical inspection is required.
Support Topics
What the team can help coordinate
Charger
Output, connector, charging indication, heat, cable damage and battery matching.
Vehicle Electrical
Controller, wiring, converters, switches, connectors and supported electrical components.
Parts Identification
Model, dimensions, connector and application matching for replacement components.
Faster Diagnosis
Send complete evidence
Product Identity
Exact model and serial, plus clear label photos.
System Context
Vehicle, controller, charger, wiring and any recent change.
Symptoms
What happens, when it happens, sounds, heat, smell, lights or error indications.
Operating History
Charging routine, load, route, water exposure, impact, repair or modification.
Safety Status
Whether the product is hot, swollen, smoking, sparking, leaking or physically damaged.
Send a Request
Request Technical Support
Provide accurate details. Remote guidance cannot replace physical testing when a safety-critical or intermittent fault is involved.
Helpful Answers
Frequently Asked Questions
Can technical support guarantee a repair from photos?
No. Photos and messages can help triage, but some issues require measurements, inspection and qualified hands-on diagnosis.
Will support tell me how to open a lithium battery?
No. Opening or repairing a high-energy battery requires appropriate training, tools, controls and authorization.
What if the vehicle suddenly loses power?
Stop safely, inspect for heat, smell, damaged wiring or loose connections without touching exposed conductors, and contact qualified support with system details.
Can I change controller or charger settings?
Do not alter settings without model-specific approval. Changes can exceed battery, motor, wiring or BMS limits.
AFTER-SALES COMMITMENT
24-Month After-Sales Service
Subhanallah Trade House provides 24 months of after-delivery service support for eligible products. Our technical service team is supported by a Chinese engineer based in our office, helping us handle diagnosis, technical guidance and complex service cases with direct engineering support.
24 Months
Structured after-delivery service support under the applicable product and service terms.
Chinese Engineer
An engineer from China is based in our office to strengthen technical diagnosis and service quality.
Local Technical Team
Customers and dealers have a local route for service requests, technical checks and follow-up.
Recorded Service
Service requests can be tracked through the STH support process from issue intake to resolution.