Smartwatch Battery Solutions

The Challenge of Modern Smartwatch Design

Smartwatches have evolved from simple timekeepers into powerful hubs for health monitoring, NFC payments, GPS navigation, and real-time interaction. These advanced features demand significant energy, yet consumers expect sleek, lightweight designs with a variety of dial shapes (round, square, or curved).

Batteryswift specializes in overcoming these design constraints by providing ultra-thin, high-density rechargeable batteries that conform to your device’s unique architecture.

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Core Features of Batteryswift Smartwatch Batteries

Our battery technology is engineered to maximize runtime while minimizing the footprint inside the watch casing:

• Ultimate Form Factor Flexibility: We manufacture batteries in any shape (curved, round, rectangular, etc.) to match your specific dial and strap design.
• Ultra-Thin Profiles: Thickness ranges from 0.5 mm to 8 mm, with widths from 6 mm to 50 mm.
• High Performance: Supports high-rate discharge and fast-charging capabilities to keep users connected.
• Environmental Resilience: Reliable operation in extreme temperatures (-50 ℃~50 ℃ or -20 ℃~80 ℃.).
• Certified Safety: Meets global standards for wearable safety, ensuring peace of mind for the end user.

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Your One-Stop Customization Partner

At Batteryswift, we simplify your development cycle. You focus on the industrial design and software; we handle the energy system.

Rapid Prototyping: Custom test samples can be completed in as little as 7 days.

Global Supply Chain: With dedicated warehouses in Europe and the USA, we ensure stable lead times and localized support.

Bespoke Engineering: From voltage platforms (3.7V to 3.85V) to custom PCM and connectors, we tailor every cell to your BOM requirements.

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Smartwatches are generally round with a diameter between 42 and 45 mm, there are others that are rectangular. Customized shaped batteries created by Grepow better fit into the empty spaces in watches and also increase the maximum capacity available.

Round Lipo Smartwatch Batteries List

Model	Full Charged Voltage	C-rate	Capacity	Shape
BATFT4730027	4.35V	1C	330mA	round
BATFT5030027	4.2V	3C	300mAh	round
BATFT6530027	4.35V	3C	430mAh	round
BATFT3533031	4.35V	1C	295mAh	round
BATFT4035035	4.35V	1C	405mAh	round
BATFT4435035	4.2V	1C	450mAh	round
BATFT4535035	4.35V	1C	475mAh	round
BATFT4037036	4.35V	1C	495mAh	round
BATFT4635035	4.35V	1C	480mAh	round