With over 15 years of industry experience, Junda Battery specializes in the custom design and manufacturing of lithium-ion battery packs for a wide range of consumer electronic products. Our battery solutions power both everyday essentials and performance-driven devices, such as:
Outdoor camera systems
Digital alarm clocks
LED flashlights
Personal grooming tools
Home and commercial security monitors
To meet the diverse electrical demands of modern devices, we offer multiple standard voltage configurations—each customizable for size, capacity, and output performance:
3.7V lithium-ion battery packs
7.4V lithium-ion battery packs
11.1V lithium-ion battery packs
14.8V lithium-ion battery packs
24V lithium-ion battery packs
Each pack is engineered by Junda’s experienced technical team to ensure high energy efficiency, compact size, safety compliance, and integration flexibility. Whether you’re developing next-generation smart devices or improving current product performance, we deliver battery pack solutions that align with your product vision and certification requirements.
For optimal safety and longevity, we strongly recommend using chargers provided or approved by Junda Battery. Our chargers are specifically matched to your battery pack’s voltage, chemistry, and application, ensuring stable charging and preventing overvoltage or overheating.
Each lithium-ion cell has a full charge voltage of 4.2V.
The total pack charge voltage = 4.2V × number of cells in series (e.g., 3S = 12.6V).
Charging current should be selected based on desired charging time and thermal limits.
If you need help selecting a charger, our technical team can advise on the correct parameters for your pack.
Yes—if your application involves high current or elevated temperatures, we recommend integrating an NTC (Negative Temperature Coefficient) thermistor into the battery pack.
If peak discharge current exceeds 10× the constant current, an NTC is highly recommended.
If the device operates in environments above 65°C, an NTC helps prevent PCB overheating and thermal runaway.
Junda Battery supports 10K and 100K NTC options. Our engineering team will guide you through thermal protection strategies during the design phase.
For consumer electronic devices, Junda Battery recommends compact cylindrical lithium-ion cells with proven reliability and energy density. Common cell formats include:
10440, 13310, 14430, 14500
14650, 16340, 16500, 18350
18500, 18650, 21700
Cell selection is based on your required capacity, voltage, size constraints, and discharge rate. We’ll help evaluate the best fit during project consultation.
Quality is engineered into every step of our process. At Junda Battery, every custom lithium-ion battery pack includes:
Detailed electrical schematics
Full component list with IC/MOS brand and model identification
Thermal and circuit simulation (if required)
Aging and cycle life testing before shipment
100% QC and functional inspection prior to delivery
All designs are reviewed by our CTO, who brings over 15 years of lithium battery engineering experience, ensuring your product is safe, reliable, and application-ready.
Need a custom lithium battery pack? Just send us your specs—we’ll help you choose the right voltage, case, and configuration for your application.
At JUNDA, we make customization easy. Follow these 3 simple steps to start today:
Send your battery requirements — voltage, capacity, casing type, or upload drawings/photos.
We’ll evaluate your specs and recommend the best configuration. A detailed quote will be sent within 24 hours.
After approval and deposit, we start production. Shipping and tracking will be arranged for fast, secure delivery.
