As we all known, Panasonic, Sanyo, Sony, Samsung, and LG are the top level 18650 cell manufacturers, making long lasting cells in a standard size (18 mm by 65 mm) that fits all 18650 compatible devices. Some Chinese batteries are cheaper and performance as well as the popular brand batteries. Gpower, which is the main battery brand of Geezle Industrial Co,.Ltd, is a better battery to recommend. In general, When deciding on which battery is best for you, balance out the capacity, current rating, and voltage. Considering those qualifications, the Gpower is the best 18650 battery. There are many models of Gpower battery. The Gpower 3000mAh 40A with the capacity 3000mAh and CDR 20A — making it both high-drain and high-capacity. High-drain batteries are safer and designed for use with high current devices, such as vaporizers. They are also less wasteful, meaning they have a longer life cycle and can last for more recharges. High capacity means that the Gpower can go for longer stretches of time without being recharged, which is useful for just about every situation.
Quick Response Within 24H
Provide Solution Within 72h
10Years After Sale Service
Taking Project Management, technology innovation and elite team as basis, CTECHI's custom li-ion battery products and solutions fully expresses its core competence in fast response, excellence, customization and after-sales guarantee. It creates more value for end users in the process of providing special-usage lithium ion battery products and solutions.
High Energy 33.5Ah Secondary Li Ion Battery Pack Details: We need you to fill a Product Request Form, we check it and make sure it is complete and clear enough.
Feasibility Evaluation and Project Launch: Project manager will organize the project team and evaluate its feasibility in aspects of EE, mechanism, software, electrochemistry, workmanship, quality and supply chain. Then, Feasibility Study Report will be released for the Project Manager's approval for project launch.
Product Design and Review Project Manager will organize R&D team to start product design including ID designer, mechanical engineer, EE engineer, battery engineer, software engineer.
Design Verification and Review: Prototype sample to be made for verifications, including but not limited to schematic, PCBA layout, ID, mechanical design, software design, battery performance, sample making and test, problems and solutions, EB1, tooling fabrication, pilot run, sample full test and customer approval.
Workmanship Verification and Pilot Run: We will follow CTECHI's Technical Manual, to draw up SOP which meets
Product Certification Test: Samples will be submitted for overall tests according to CTECHI's Reliability Test Standard of Lithium ion Battery Products, in the meantime, to apply certification test as per customer's request in authorized third-party Lab.
Project Ending: To get customer acceptance, collect and store important documents and summarize loss and gain of the .
At CTECHi, We provide various quality batteries, including inexpensive high energy density lithium iron phosphate lifepo4 cell. If you have any request, please feel free to contact us.
We CTECHI Group is one of leading Lithium Manganese Dioxide Li-MnO2 household batteries, lithium iron disulfide battery, lithium sulfur dioxide battery and lifepo4 battery pack manufacturers and exporter in China, we are not only focus on provide single cell but provide battery assembly and do OEM service for customers, CTECHI has captured 80 percent of overseas markets in the past 16 years with more than 2000 reliable customers in our customer management system, which has been being one of the leading enterprises with the most complete category in China's battery industry.
From Size There's the risk to be deformed, leakage, explosion. Under the maniac price war, Some companies use low price PCB protection board or EVEN cut this part off. This kind of deeds make the market pay prices for the explosion-able 18650 batteries. It does not come easy to tell whether this a PCB inside. Here's a easy way but not very reliable way. The 18650 Li Ion Battery's dimension is 18mm by 65mm. 65mm is its length. When using in a flashlight, a PCB protected 18650 would be at least 67-68mm. Yet the most reliable way is to buy it from a reliable seller. From appearance For the original, it has a clear color and texture. Tidy and clean appearance. No scratch. It should be correctly labeled with Model No, Type, Capacity, Voltage, Negative and positive indications. Metal sheets no scratch, no blackened and greenish. If there's inconformity then you can tell it's not the original.
From Capacity Normally the 3.7 Volt Lithium Battery's capacity won't exceed 3100 mAh for any reason(based the 0.5 C capacity-testing standard). If you got a 18650 battery, and labeled 5000 mAh or so, please don't risk your life to use it. It's always been this case. A grade 18650 cells for e-bikes and power tools. B grade for small assembly company of power bank product. C grade and those below C grade for flashlight uses. While Gpower manufactures their own A grade battery to their customers. From Price Some company will use LOW PRICE WITH HUGE CAPACITY to attract customers or even distributors. The price always be something around a 0.65 USD to 1.3 USD for one single 18650 lithium ion batteries. Now you dare to use it? No company will sell goods with a price which is much more lower than the cost. Besides now the labor cost is increasing in China. If there is, it could be bad ones.
Built-in to almost all 3.7V 18650 Rechargeable Battery's Inhibits high current surges Protects against high-pressure, over temperature Resets and does not permanently disable the battery when triggered. However it's best not to trip them often as it irreversibly increases their electrical resistance by up to a factor of two and makes them more likely to have catastrophic failure. May not work when module included multi-cell series and/or parallel configurations.