Sonata 4400, our flagship lithium-ion cell, offers significant benefits over traditional 18650 lithium-ion batteries for a wide range of portable power applications.
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Same benefits as Swing with the added protection of a PTC
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Wide operating temperature range
- Discharge -40°C to 70°
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Charge -10°C to 60°C
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High energy density
- By volume: 420Wh/L
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By weight: 177Wh/kg
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10 year reliable calendar life
- 1,000+ cycles at 100% DOD
- 2,000+ cycles at 90% DOD
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3,500+ cycles at 75% DOD
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Fast charge with minimal loss of cycle life (80% capacity in 30 minutes)
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Unmatched safety features
- Patented CID
- Separator with integrated shutdown mechanism
- Redundant vents
- Aluminum can construction to optimize thermal dissipation
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Laser welded lid
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Certifications
- UL
- UN
- RoHS
- Nordic Ecolabel
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Chinese Environmental United Certification Center
Review our Sonata 4400 data sheet for more details or contact sales@boston-power.com for additional information, or order our evaluation cells.

