GRAPCHARGERON-BOARD CHARGING SYSTEMSContact Us

GRAPCHARGERON-BOARD CHARGING SYSTEMS

Company

About UsWho we are, the factory behind the product and the process that governs it.TechnologyTopologies, thermal design and the control strategy behind every platform.CooperationOEM, ODM and distribution models, from sample to series supply.InsightsEngineering notes, application guides and company news.FAQLead time, MOQ, certification, warranty and customisation questions.ContactSend a pack voltage and a target power — we reply with a proposal.

Solutions

GC-OBC-700W700 W · 12–72 V · IP66 GC-OBC-850W850 W · 24–72 V · IP67 GC-OBC-2KW2 kW · 48–320 V · CAN GC-OBC-3.3KW3.3 kW · 48–540 V GC-OBC-6.6KW6.6 kW · 48–560 V · IP67 GC-DCD-2KW2–3 kW · step-up to 320 V GC-DCD-1.5KW1.5 kW · 48–800 V in GC-INT-6.6KW-1.5KW6.6 kW OBC + 1.5 kW DC-DC GC-BID-6.6KW-2KW6.6 kW bidirectional + 2 kW GC-INT-3.3KW-1KW-PDU3.3 kW + 1 kW + PDU

Support

Documentation and DownloadsSpecification sheets, drawings and test reports for every model.TroubleshootingFault codes, CAN behaviour and the checks to run before an RMA.Algorithms, Charge Profiles and BatteryCC-CV profiles, pre-charge behaviour and BMS handshakes.Tips, Tricks and General InformationSizing, derating, thermal margins and installation notes.

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Checklist

Technology

How to Select an On-Board Charger: A 7-Step Checklist for OEM and Tier-1 Buyers
By 2026-10-152026-10-16

Seven questions — battery platform, power, cooling, interface, protection, environment and compliance — that determine whether an on-board charger drops into your architecture or forces it to change.

Read More How to Select an On-Board Charger: A 7-Step Checklist for OEM and Tier-1 Buyers