Products
Battery Products
Engineered Around
Your Device.
Explore lithium polymer cells, 18650 / 21700 batteries, custom battery packs and LiFePO4 solutions. Customize voltage, capacity, dimensions, PCM/BMS, wires, connectors and labeling for your application.
Explore Our Battery Products
Explore KRL battery families by chemistry, form factor and application, then share your target specifications for engineering evaluation.
Lithium Polymer Batteries
Thin, lightweight pouch cells for compact products, wearables, medical devices, GPS trackers and consumer electronics.
View LiPo Batteries →18650 / 21700 Batteries
Cylindrical lithium-ion cells and packs for products requiring stable output, stronger structure and scalable capacity.
View Cylindrical Batteries →Custom Battery Packs
Complete packs with customized voltage, capacity, PCM/BMS, wiring, connectors, insulation, housing, labels and packaging.
View Custom Packs →LiFePO4 Battery Packs
Long-cycle, safety-focused lithium iron phosphate packs for portable power, backup, industrial and specialized equipment.
View LiFePO4 Packs →Curved Battery Solutions
for Smart Rings
Explore curved lithium polymer cells designed around the space, shape and integration requirements of smart rings.
Discuss a Smart Ring Project →Browse Standard & Customizable Models
Filter by battery family or search by model and application to find the right starting point for your project.
12V 20Ah Sodium-ion Battery Pack
12V High-CCA Sodium-ion Starting Battery
Ultra-Thin LiPo Cell
Curved Smart Ring Cell
Standard Pouch LiPo Cell
18650 Lithium-ion Cell
21700 High-Energy Cell
Integrated Device Battery Pack
Compact Electronics Battery Pack
LiFePO4 Power Module
18650 7.4V 2000mAh Battery Pack
Custom 18650 Cells & Battery Packs
7.4V 5000mAh LiPo Battery Pack
18650 3.7V 2200mAh Li-ion Cell
752530 3.7V 500mAh LiPo Battery
7.4V 2600mAh 2S1P Battery Pack
422025 3.87V 180mAh Pouch Cell
18650 7.3V 3200mAh 2S Battery Pack
18650 3.7V 1500–2200mAh Li-ion Cells
18650 25.6V 2000mAh Battery Pack
18650 3.7V 2200mAh Rechargeable Cell
18650 7.4V 2000mAh Li-ion Pack
18650 10Ah Battery Pack
18650 12V 35Ah Battery Pack
7.4V 5000mAh Smart Lock Battery
18650 3.7V Custom Battery Pack
18650 3.7V 2000mAh Battery Pack
Try another keyword or select “All Products”.
Battery Solutions for Your Industry
Explore battery solutions by device and industry, from smart wearables to medical, IoT, mobility and portable electronics.
Wearables & Smart Rings
Compact, lightweight and curved battery solutions for products where every millimeter matters.
Explore solution →Medical & Beauty Devices
Custom cells and packs designed around portability, stable output and product integration.
Explore solution →GPS, Trackers & IoT
Space-efficient battery options for connected devices, sensors, trackers and smart terminals.
Explore solution →Smart Home & Security
Battery packs for smart locks, alarms, access control, sensors and connected home products.
Explore solution →Power Tools & Mobility
Cylindrical cells and custom packs for products that need stronger output and durable structure.
Explore solution →Portable Electronics
Flexible battery integration for speakers, handheld devices, scanners, POS and consumer products.
Explore solution →From Device Requirements to Mass Production
KRL supports the complete development path from product requirements and cell selection to prototype validation and stable production.
Send Requirements
Voltage, capacity, maximum dimensions, working current, connector, quantity and target market.
Engineering Evaluation
Battery type, cell layout, PCM/BMS, protection, structural fit and integration are reviewed.
Prototype & Validation
Prepare samples for fit, charging, runtime and safety-related testing before mass production.
Production & Delivery
Finalize materials, labeling, packaging, quality checks and production according to the approved sample.
Manufacturing and Quality Control at Every Step.
Integrated production, assembly, aging tests and quality inspection support reliable custom battery manufacturing.
Need a Battery Built Around Your Product?
Send the key parameters or a device drawing. Our engineering team will review the electrical, mechanical and certification requirements.
