HOW WE POWER YOUR PROJECT
Browse the ULS catalog
More than a battery supplier.
The right cells. The right configuration. A technical team that understands the details of your application.
01 / SOLUTION
Cylindrical cells
Source 18650 and 21700 cells for robotics, mobility, energy systems and qualified pack manufacturing.
Shop lithium cells 02 / SOLUTIONCustom battery packs
Prototype and OEM battery assemblies designed around your voltage, capacity, fit and current requirements.
Plan a custom build 03 / SOLUTIONBattery revival services
Specialty battery diagnostics and cell-replacement projects reviewed by our technical team before shipment.
Explore battery revivalCUSTOM BATTERY MANUFACTURING
Prototype to production, built around your application.
Custom lithium-ion battery packs for robotics, UAVs, industrial equipment, mobility and OEM programs, supported by U.S.-based project coordination.
Custom pack designVoltage, capacity, current and form factor.
Smart BMS optionsProtection and monitoring matched to the application.
Testing supportProject-specific screening and documentation.
OEM productionA practical path from prototype to volume.
FIND YOUR CELL
Find your performance fit.
High range, long cycle life, or high drain—explore the right performance priorities for your next battery build.
ENERGY DENSITY
High range
Prioritize capacity and runtime for applications where every watt-hour matters.
Learn about high-range cells
CYCLE ENDURANCE
High life
Explore cells for repeat-use systems where longevity and service life matter.
Learn about high-cycle-life cells
POWER DELIVERY
High drain
Find cell options for demanding loads and high-current applications.
Learn about high-drain cellsCell selection depends on the complete application, electrical requirements and manufacturer specifications.
ULS / BATTERY CELL SELECTION
Find your ideal battery cell.
Move the dot toward your priority: longer runtime, longer cycle life, or higher current. Explore cells that may fit your application.
Tap or drag the dot. If your phone preview blocks dragging, use the priority controls below.
Choose your main priority
RangePower
Your performance priorities
High range33%
High cycle life34%
High power33%
Cells to explore
Preliminary ranking based on published product titles and selected editorial ratings—not a validated engineering recommendation. Cycle-life rankings require comparable manufacturer test data. Check each manufacturer's datasheet, discharge conditions and cycle-life test criteria before selecting a cell.
Samsung 35E | Lithium Ion Cell 3500mah CellCompare specifications and availability
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Samsung 30Q 18650 – 3000mAh 15A Lithium-Ion CellCompare specifications and availability
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LG MJ1 | 18650 Lithium Ion Battery Cell 3500mahHigh-capacity 18650 option
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LG INR18650 MH1 3200mAh 18650 Battery (High Capacity)Compare specifications and availability
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Samsung 25R | 18650 2500mAh 20A BatteryCompare specifications and availability
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Sanyo UR18650ACompare specifications and availability
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Sony US18650 VTC6M 3000mAh 18650 Battery (High Drain)Compare specifications and availability
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Panasonic NCR18650BD 3200mAh 18650 Battery (High Capacity)Compare specifications and availability
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Molicel INR18650 M35A 3500mAh 18650 Battery (High Capacity)Compare specifications and availability
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Molicel INR18650 P30B 3000mAh 18650 Battery (High Drain)Compare specifications and availability
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Molicel INR18650 P28A 2800mAh 18650 Battery (High Drain)Compare specifications and availability
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Molicel INR18650 P26A 2600mAh 18650 Battery (High Drain)Compare specifications and availability
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Samsung INR21700-50S 5000mAh 21700 Battery (High Drain)Higher-current 21700 option
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LG INR21700 M58T 5800mAh 21700 Battery (High Capacity)Compare specifications and availability
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Molicel INR21700 M65A 6500mAh 21700 Battery (High Capacity)High-capacity 21700 platform
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Tenpower INR21700-50XG 21700 Battery Cell | 5000mAh 40A High DischargeCompare specifications and availability
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Amprius SA112 21700 Battery Cell | 6500mAh High CapacityCompare specifications and availability
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Molicel INR21700 P45B 4500mAh 21700 Battery (High Drain)Compare specifications and availability
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Molicel P42A | 21700 4200mAh 45A BatteryCompare specifications and availability
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LR2170SK | LISHEN Lithium Ion Battery Cell 21700 5800MAHCompare specifications and availability
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Molicel INR21700 P50B 5000mAh 21700 Battery (High Drain)Compare specifications and availability
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Samsung 53G | 21700 Battery 5300mAh 10.6A High-Capacity Lithium-Ion CellCompare specifications and availability
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Molicel INR21700 P42A 4200mAh 21700 Battery (High Drain)Compare specifications and availability
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Murata US21700 VX40 4000mAh 21700 Battery (High Drain)Compare specifications and availability
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Samsung 58E | 21700 5800mAh 10A Battery CellCompare specifications and availability
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LR2170SF | LISHEN 21700 Lithium Ion Cell 4500mahCompare specifications and availability
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Samsung INR21700-50G 5000mAh 21700 Battery (Balanced Performance)Compare specifications and availability
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Samsung INR21700-50E 5000mAh 21700 Battery (High Capacity)Compare specifications and availability
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Samsung 40T | 21700 4000mAh 35A BatteryCompare specifications and availability
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LR2170SD | LISHEN 21700 9.6A 4900mAh Lithium BatteryCompare specifications and availability
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LR2170LA | LISHEN 21700 45A 4000mAh Lithium BatteryCompare specifications and availability
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PRODUCT SPOTLIGHT
Shop all battery cells
Compare cells by application.
Explore capacity, nominal voltage and discharge ratings across popular cell formats. Open each product for pricing, availability and detailed specifications.
Allocation inquiries
MOLICEL / 21700
M65A / High energy
Ultra-high-capacity 21700 platform for demanding pack designs.
6500mAhCapacity
3.6VNominal voltage
26ADischarge*
$9.99
See availability at checkout
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Popular for builders
SAMSUNG SDI / 21700
50S / High power
Balances energy and current capability in a trusted 21700 format.
5000mAhCapacity
3.6VNominal voltage
25ADischarge*
$5.99
Check allocation / availability
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Commercial supply
LG ENERGY / 18650
MJ1 / Long runtime
High-capacity 18650 cell for applications prioritizing runtime.
3500mAhCapacity
3.635VNominal voltage
10ADischarge*
$5.49
See availability at checkout
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* Model-level specifications; maximum discharge ratings depend on manufacturer-defined conditions. Confirm current documentation and inventory before production use.
UNITED LITHIUM SOLUTIONS / LAS VEGAS, NV
Engineered power. Built to perform.
Industrial lithium-ion cells, custom battery packs and technical sourcing for the teams building what comes next. From your first prototype to production-volume orders.
Commercial supply / Custom battery assembly / U.S. support
MOLICEL M65A
21700 / 6500mAh
18650 & 21700 cell supply
OEM & custom battery packs
Technical testing options
Las Vegas based operations
OUR WORKFLOW
Your spec. Our starting point.
A practical path from technical requirements to a commercially viable lithium-ion solution.
01
Tell us the application
Share your voltage, capacity, continuous and peak current, and physical constraints.
02
Review the configuration
Select a cell model, pack arrangement, protection requirements and connectors.
03
Align supply & testing
Confirm quantity, availability, required documentation and any screening protocol.
04
Build toward production
Move from project evaluation and prototype discussions to a formal commercial quote.
ENGINEERED FOR YOUR APPLICATION
Have a battery project in mind?
Share voltage, capacity, current, dimensions and order quantity. Our Las Vegas team can review a custom pack or help source the right lithium-ion cells.