Automotive electrical systems feature high technology, high R&D cost and high added value, improving safety, energy saving and emission reduction. Showrooms require stable power to keep demo vehicles functional during customer trials, ensuring good user experience and system reliability. Charger constant voltage mode is critical for showroom vehicles under the following scenarios:

1. Battery maintenance in showrooms

■ Modern vehicles rely heavily on electronics; stable battery power prevents unexpected failures during demos.

■ More electronic features accelerate self-discharge, draining batteries faster.

■ Even basic functions like sunroofs, locks and infotainment consume power; door unlocking current may reach nearly 50A.

■ Frequent customer operations discharge batteries heavily while engines never run in showrooms, causing sulfation and permanent damage without proper charging.

2. Stabilized power during vehicle demonstrations

■ Manufacturers and dealers need reliable battery performance during window lifts, navigation demos, media playback and trunk operations.

■ Over-discharging below 12V triggers system shutdowns, hurting customer experience and sales.

3. Stabilized power during new vehicle delivery

■ Luxury vehicle handover takes at least 2 hours for system familiarization.

■ Sales explanations happen with engines off; low battery creates hidden faults if chargers are not connected.

4. Stabilized power during exhibitions

■ Car shows attract heavy interaction; stable power avoids system shutdowns.

■ Fully drained batteries cannot restart vehicles after events.

5. Battery maintenance for used cars

■ Proper maintenance reduces self-discharge and weather-related aging, saving replacement costs.

■ Fully charged batteries ensure smooth test drives.