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By leveraging accumulated battery lifecycle data,
new value is created to build a circular battery ecosystem.

B.once

Overview

LG Energy Solution’s one-time battery evaluation service allows quick and convenient assessment of remaining performance and lifespan without removing the battery. In just 5–30 minutes, it delivers accurate diagnostics for used-car transactions or regular inspections, supporting reliable vehicle value assessment and faster check-ups.

B.once logo

Battery evaluation results can be delivered to customers in various ways.

B.once App The diagnostic results can be instantly checked through the app and delivered to users via mobile phones or tablets.
API Through API integration, diagnostic results can be linked directly to your service or platform (DB) and delivered to end users.
Mail Email delivery to a designated company account, such as a representative address.

Evaluation Methods

The one-time evaluation service instantly issues a certificate by simply attaching the diagnostic device to the vehicle and performing a quick action. Offering both speed and ease, it provides highly accurate assessments of battery condition.

QuickScan

Based on BMS data collected from the vehicle and LG Energy Solution’s extensive big data, this battery evaluation method generates accurate State of Health (SoH) estimates.

Speed Evaluation - completed in as little as 2 minutes. Simplicity - No battery removal required. Efficiency - Evaluate multiple vehicle types with a single device.

Evaluation MethodPlug the diagnostic scanner into the vehicle and switch the ignition ON/OFF

Evaluation TimeMinimum 2-5 minutes

Accuracy± 5%

01 Evaluation Target. 02 Vehicle-installed diagnostic device. 03 Ignition ON/OFF. 04 Instant battery evaluation results available.

PowerScan

A battery evaluation method that calculates State of Health (SoH) by applying LG Energy Solution’s proprietary algorithm to BMS and charging data.

LG Energy SolutionSame-day Result: No additional driving data required
(Battery evaluation report issued within 30 minutes after charging is completed)

01 Plug in diagnostic scanner. 02 Start charging. 03 End charging. 04 Driving (5–7 days) Not required with LG Energy Solution. 05 Evaluation complete.

Evaluation MethodStart charging at 50% SoC and continue up to 80% (DoD 30%)
(Competitor A: Requires full discharge from 100% to below 10%)

Evaluation TimeMinimum 30–50 minutes

Accuracy± 3%

01 Evaluation Target. 02 Vehicle-installed diagnostic device. 03 Charging. 04 Immediate result confirmation after charging.

Use Cases

With just a single scan, B.once quickly, easily, and accurately assesses an EV battery’s current condition—including State of Health (SoH), voltage, temperature, and fault information—making it highly useful for used-car transactions as well as regular maintenance and inspections.

Battery Condition Scan. Battery Condition Monitoring Technology - Safety Diagnostics, Degradation Diagnostics, SoH Estimation. Battery Evaluation Report Issuance. Application in Used-Car Transactions. Application in Vehicle Maintenance & Inspection.

Used-Car Trading Platforms

01

Battery Certification Product Development

Enhance the perception of “high-quality, safe used EVs” by issuing certified battery evaluation reports for vehicles sold.

02

Value-added Monetization

Generate new revenue streams by increasing product value in the growing used EV market through verified and certified vehicles.

Vehicle Maintenance & Inspection

01

EWP-linked Value-added Service Launch

Provide regular battery evaluation services in connection with Extended Warranty Programs (EWP).

  • * EWP (Extended Warranty Program)
02

Battery Evaluation-based Add-on Services

Offer battery evaluation reports and battery management guidance at vehicle delivery.