Based on our lithium-ion battery technology platform, the Sonata 4400 delivers high performing, fast charging, safe, and green battery power. Applicable to a wide range of portable power applications, its patent-pending design offers significant benefits over traditional 18650 lithium-ion batteries.
Key features of Sonata 4400 include:
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Industry-leading cycle life: 1000 cycles at 100% DOD
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Fast charge: 80% capacity in 30 minutes; 40% capacity in 10 minutes
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Multiple redundant safety features including: CIDs, redundant vents, aluminum can
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Excellent thermal properties
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Elimination of impedance imbalance in traditional xS2P systems
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Form factor compatible size: 18.5mm x 37.1mm x 65.2mm (L x W x H)
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Nordic and Chinese Ecolabel accreditations
- UL, UN, RoHS and CTIA certifications
Review our Sonata 4400 data sheet for more details or contact sales@boston-power.com for additional information, or order our evaluation cells.

