Explore our cutting-edge Deep Cycle Lithium & Hybrid Energy Storage Assemblies engineered for superior efficiency and high cyclic integrity.
Established in 2014 in Shenzhen, China, Shenzhen Suntherra Battery Co., Ltd. has grown to become a cornerstone OEM and ODM supplier, optimizing renewable energy systems across global markets. As a prominent deep cycle lithium battery manufacturer, we specialize in high-capacity chemistry structures, engineered microgrids, and battery management system (BMS) customization.
Our state-of-the-art facility occupies approximately 12,000 square meters and employs over 180 skilled professionals. This diverse workforce comprises veteran battery design specialists, quality inspectors, R&D scholars, and logistics management experts. Operating advanced automated cell-sorting networks and dual-active BMS configurations, we ensure that every lithium-iron-phosphate (LiFePO4) cell and complete module assembly adheres to stringent global durability parameters.
"We bridge the gap between complex lithium chemistry and industrial field applications, offering highly customizable architectures to fulfill exact voltage, capacity, and spatial guidelines."
From current-generation Olivine-structured LiFePO4 to next-generation Solid-State configurations, explore our chemical innovation timelines.
Utilizing high-purity LFP chemistry to guarantee thermal runaway thresholds up to 60°C. Delivers >6000 cycles at 80% Depth of Discharge (DoD), securing unmatched longevity.
Integrated microprocessors featuring real-time state-of-charge (SoC) and state-of-health (SoH) diagnostics. Direct CANbus/RS485 interface integration for seamless solar inverter handshakes.
Pioneering the developmental integration of semi-solid state materials into high-capacity C&I blocks to push energy density to 220 Wh/kg while minimizing passive thermal dissipation footprint.
| Performance Criterion | Suntherra LiFePO4 (LFP) | Traditional AGM Lead-Acid | Typical Gel Deep Cycle |
|---|---|---|---|
| Cycle Life (80% DoD) | 6,000+ Cycles | 400 - 600 Cycles | 600 - 900 Cycles |
| Usable Capacity Range | Up to 100% (Recommended 90%) | Max 50% (To prevent cell degradation) | Max 60% |
| Weight Ratio | 1/3 of Lead-Acid equivalent | Heavy (High transportation cost) | Heavy |
| BMS Protection | Active cell-balancing, Over-temp, OVP | None (Relies on external float charge) | None (Prone to sulfation) |
| Average Lifespan | 10 - 15 Years | 2 - 3 Years | 3 - 5 Years |
Our factory in Shenzhen harnesses the absolute forefront of localized battery component supply chains. Proximity to tier-one chemical extraction facilities and smart semiconductor clusters gives Suntherra an unmatched edge in component procurement, lowering lead times by up to 30% compared to international competitors.
Through our Factory 4.0 workflow, automated pneumatic cell matching checks internal resistance, open-circuit voltage, and capacitance tolerances within +/- 2%. Laser-welding and CNC structure formation prevent physical failure paths under extreme shock and vibration conditions, ideal for heavy industrial or maritime deployments.
Engineered configuration maps designed to supply off-grid, hybrid microgrids, and massive commercial backup infrastructures.
Deploying wall-mounted and modular stackable LiFePO4 batteries (51.2V, 10kWh to 30kWh) to store solar surplus, shave peak demands, and supply continuous emergency backup power.
Compact, standard rackmount (19-inch) battery packs designed for uninterrupted telecom stability. Standardized 48V outputs with remote SNMP management interfaces built-in.
Heavy-duty, thermal-controlled container units (5MWh to 10MWh) for wind and large-scale solar array stabilization, frequency response, and macro-grid dispatch management.
For EPC companies, commercial developers, and high-volume wholesale distributors, procurement is not just about price—it’s about security, traceability, and execution. Suntherra implements full-traceability QR codes on every single cell. Buyers can monitor the complete chemical manufacturing parameters, age history, and internal resistance scores of their modular arrays.
We maintain extensive strategic relationships with maritime shipping lanes and heavy transport networks, enabling seamless navigation of complex dangerous goods shipping standards (Class 9 UN3480/UN3481).
Exporting power systems internationally demands impeccable alignment with local safety and environmental codes. Every product series crafted by Suntherra undergoes extensive stress tests to guarantee certificates valid for operations across Europe, North America, the Middle East, and APAC.
In-depth, technical answers clarifying active balancing, battery chemistry comparisons, and engineering customizations.
LiFePO4 (Lithium Iron Phosphate) offers an energy density that is triple that of lead-acid. More importantly, it sustains 6,000+ cycles at 80% depth-of-discharge, whereas lead-acid and gel batteries typically degrade rapidly if discharged past 50% of capacity. Additionally, LFP is completely free from sulfation and corrosive outgassing, rendering it maintenance-free and highly cost-effective over its lifecycle.
Our custom Battery Management Systems (BMS) integrate precise passive balancing circuits that shunt charge from cells with higher voltage to prevent overcharging. For larger high-capacity solutions, active cell-balancing is implemented to dynamically transfer energy from stronger cells to weaker ones, maintaining capacity parity, prolonging assembly longevity, and boosting system roundtrip efficiency.
Suntherra systems are pre-programmed to communicate natively with leading global inverter brands, including Victron Energy, Growatt, Deye, SMA, Studer, GoodWe, and Sofar. Our systems utilize configurable CANbus and RS485 communication protocols, allowing field engineers to customize registry maps on-site to match their local inverter control loops.
For standard OEM modifications (branding, housing color, configuration adjustments), typical lead times span 20 to 25 days. For custom ODM integrations involving structural sheet metal engineering, bespoke PCB-BMS architecture, or tailored high-voltage configurations, our development and testing timeline spans approximately 35 to 45 days, ensuring safety validation before final shipment.
Explore our high-performance heavy-duty battery containers, off-grid sets, and portable modules designed for resilient energy networks.
Suntherra Battery
