Low-Self-Discharge Pack Keeps Smart Doorbells Alive Through Winter
A smart home brand faced winter failures and frequent battery swaps on outdoor doorbells. EPT delivered a cold-tolerant pack with low quiescent drain and a sealed connector system.
At a Glance
Project snapshot
- Industry: Smart home — outdoor video doorbells
- Challenge: 6-month service interval at −20°C with Wi-Fi + IR active
- Solution: 3.7V 1200mAh low-self-discharge pouch with IP65-rated pack
- Outcome: 6-month field interval validated, 45% fewer winter support tickets
Key outcomes
- Service interval
- 6 months
- Cold performance
- −20°C
- Support ticket drop
- 45%
- Capacity
- 1200 mAh
The Challenge
Cold-climate users saw accelerated voltage sag during night-time IR capture. Support costs spiked each winter despite firmware optimizations alone.
Our Approach
EPT selected a low-self-discharge chemistry and tuned PCM quiescent current. Pack assembly used IP65-rated sealing and corrosion-resistant contacts for outdoor exposure.
Results
Field trials across Minnesota and Alberta validated the six-month swap interval. The design rolled out as the default power module for the client's outdoor camera line.
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