News
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18650 vs 32650 Battery: Size, Energy and Cell Selection
18650 vs 32650 Battery: Size, Energy and Cell Selection Choosing between an 18650 and a 32650 battery is not simply a matter of selecting the larger cell. The two cylindrical formats have different diameter requirements, packaging implications and potential energy capacities. For OEM product d...Read more -
14500 vs 16340 Battery: Size, Capacity & Compatibility
14500 vs 16340 Battery: Size, Capacity, Voltage and Compatibility Choosing between a 14500 and a 16340 battery involves more than comparing capacity. Both formats are used for rechargeable cylindrical lithium-ion cells, and both have 3.7V nominal-voltage options. However, the 16340 is wider an...Read more -
18650 vs 18350 Battery: Size, Capacity and Uses
18650 vs 18350 Battery: Size, Capacity and Uses The 18650 and 18350 are both cylindrical rechargeable battery formats with a nominal diameter of about 18 mm. The crucial difference is length: an 18650 is approximately 65 mm long, while an 18350 is approximately 35 mm long. That dimensional dif...Read more -
PKCELL at CTE China Toy Expo 2026 | Booth E3A52
CTE CHINA TOY EXPO 2026 | EXHIBITION INVITATION The 24th CTE China Toy Expo 2026 will take place from October 21 to 23, 2026, at the Shanghai New International Expo Centre. PKCELL welcomes toy brands, OEM/ODM manufacturers, product designers and sourcing teams to visit Booth E3A52 and discuss re...Read more -
PKCELL at Hong Kong Electronics Fair 2026 | Rechargeable
PKCELL at Hong Kong Electronics Fair Autumn 2026: Connecting Rechargeable Battery Technology with Industry Needs PKCELL participated in the HKTDC Hong Kong Electronics Fair (Autumn Edition) 2026, held from October 13 to 16 at the Hong Kong Convention and Exhibition Centre. At Booth 1A-A03, the ...Read more -
PKCELL at 140th Canton Fair 2026 | Rechargeable Batteries
The 140th Canton Fair (Phase 1) is taking place in Guangzhou, China, from October 15 to 19, 2026. PKCELL welcomes electronics brands, sourcing managers and OEM engineering teams to Booth 17.2 I05-06 to discuss rechargeable batteries and application-specific battery packs. A suitable battery is ...Read more -
21700 Battery Pack Design for Portable Test Equipment
21700 Battery Pack Design for Portable Test Equipment Portable test equipment asks more of a battery than long runtime. A field oscilloscope, data logger, calibrator, cable tester or portable analyzer may combine sensitive analog measurement circuits with processors, displays, communications, ...Read more -
18650 vs 21700 Battery Packs: Cost per Wh for OEMs
18650 vs 21700 Battery Packs: Cost per Wh for OEMs A 21700 cell normally costs more per unit than an 18650 cell, but that does not automatically make a 21700 battery pack more expensive per watt-hour. A larger cell may reach the required energy with fewer cells, welds, holders and assembly ope...Read more -
Battery Pack Quality Inspection Before Bulk Orders
Battery Pack Quality Inspection Before Bulk Orders A battery pack can pass a prototype demonstration and still create expensive problems in volume production. A hand-built sample may use the correct cells, carefully adjusted welds and extra attention from an engineer, while the bulk order depe...Read more -
How to Validate Spot Weld Quality in 18650 and 21700 Battery Packs
How to Validate Spot Weld Quality in 18650 and 21700 Battery Packs A spot weld can look clean and still have insufficient fusion, unstable electrical resistance or poor mechanical strength. It can also be too aggressive, damaging the nickel strip or the cell terminal. For 18650 and 21700 batte...Read more -
LiPo Battery Thickness Tolerance and Swelling Allowance for Enclosure Design
LiPo Battery Thickness Tolerance and Swelling Allowance for Enclosure Design A LiPo pouch cell that fits perfectly in a CAD drawing may become difficult to install in production or place unwanted pressure on a display, PCB, housing or internal component later in its service life. The reason is...Read more -
NiMH Battery Pack Charging Design: Delta-V, Temperature and Timer Control
NiMH Battery Pack Charging Design: Delta-V, Temperature and Timer Control Reliable NiMH battery charging requires more than applying a fixed voltage or running the charger for a preset number of hours. During charging, voltage changes near full charge can be subtle, temperature behavior depend...Read more
