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Thelma Dike

Apple · Battery R&D · 2022 – 2025

UX Redesign of Apple's Internal Battery Performance Testing Platform

BDMS is Apple's internal tool for requesting, monitoring, and analyzing battery performance tests. As the sole designer on a 3-year engagement via Monks, I led the full UX redesign — uncovering deep user needs through discovery and shipping a system that saved hundreds of engineering hours annually.

My Role

Lead UX Designer

Deliverables

BDMS UX Redesign · Discovery · Research

Outcome

50% reduction in test setup time

Team

PM · Engineers · QA (via Monks)

Battery Intelligence Dashboard

The Challenge

Early designs were based on assumptions — we couldn't speak to users initially, so the platform was built around what the team believed engineers needed. This led to workflows that were technically functional but cumbersome in practice.

The most critical surface was the test creation flow. Engineers ran dozens of battery tests weekly, and the cloning interface — a core step in test setup — was slow and error-prone.

The Process

After releasing key features, I initiated a full discovery phase — interviews, remote shadowing, workshops, and knowledge sharing. This uncovered real user needs that weren't visible from the outside.

The discovery phase aligned stakeholders across the org and inspired other PMs to adopt the same approach on their tracks. The redesigned system streamlined workflows, simplified test setup, and made complex battery data easier to interpret.

“The changes to the cloning interface cut my setup time in half.” — Apple Engineer

The Result

The redesigned platform boosted confidence and productivity across the engineering team. The discovery process we established became a template for future design initiatives within the org.

50%Reduction in battery test setup time after cloning interface redesign
3yrLong-term solo design engagement — sole designer across the full project
100sEngineering hours saved annually across the BDMS platform