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The name "18650" simply tells you the size: 18 mm in diameter and 65 mm long, with a round "0" shape. Inside is a lithium-ion chemistry that stores a lot of energy in a very small package.

Temperature is the single biggest factor that decides how long your lithium-ion batteries last, how safe they are, and how well they perform day to day. Get it wrong and you'll notice shorter runtime, faster aging, or in rare cases serious safety issues.

Swelling rarely happens for just one reason. Usually several factors work together. The good news is that almost all cases come from a handful of well-known triggers that are easy to avoid once you know them.

Most people notice the price gap right away: a decent lithium battery pack for an electric motorcycle or e-bike can easily be 3–6 times more expensive than a comparable lead-acid pack with the same voltage. The difference feels huge until you understand what you actually get for the extra money

Used lithium batteries power everything from electric bikes to energy storage systems, and buying them second-hand can save a lot of money. But not every used lithium battery is safe or worth the price.

Knowing what shortens lithium battery cycles helps you get more value from devices like electric bikes, phones, or power tools. It's not just about the battery's build; daily habits play a huge role in lithium battery life cycles

Lithium battery electrolytes play multiple critical roles within the battery system. They not only facilitate ion conduction to enable charging and discharging but also contribute to performance stability, corrosion prevention on electrodes, heat dissipation, temperature management, enhanced energy and power density, high voltage and specific energy provision, safety protection, and adaptability to a wide temperature range

Lithium batteries power much of what we use daily, from phones to cars. If you're wondering why your gadget runs longer on one charge or how electric vehicles manage long trips, it often comes down to these batteries

Recently, Airumi New Energy — Zambia’s first local battery manufacturer and an overseas subsidiary of Better Technology Group Limited — conducted a fire safety and fire extinguisher training session at its production base.

In H1 2025, Better Tech Group's domestic and international subsidiaries maintained balanced growth across three key business segments: battery manufacturing turnkey solutions, lithium-ion batteries, lead-acid batteries. While overall growth slightly moderated, the Group's three core manufacturing divisions demonstrated stable performance with notable profitability. Particularly impressive was the "textbook-perfect" 0-to-1 growth of the new lead-acid battery business under overseas subsidiary Airumi New Energy.

On July 1st, Zambia time, Mr. Siazongo D. Siakalenge, Deputy Secretary to the Cabinet of Zambia, and Mr. Albert Halwampa, Director General of the Zambia Development Agency (ZDA), led a delegation to inspect Better Technology Group's (referred to as Better Tech Group) overseas subsidiary Airumi New Energy — Zambia's first battery manufacturing plant. Ms. Wei Yanping, Chairperson of Better Tech Group; Mr. Liu Dewei, General Manager of Airumi New Energy; and Mr. Huang Chao, Deputy General Manager accompanied the tour, covered by major Zambian media outlets including ZNBC and Lukulu FM.