The demand for longer runtimes drives the development of durable, powerful batteries for industrial equipment, outdoor tools, and electric vehicles. High-capacity baterii litiu-ion can greatly benefit your business. Let’s explore the top options available today.
Why Battery Capacity Matters
Battery capacity, measured in milliamp-hours (mAh), indicates how long a device operates before needing a recharge; higher mAh means longer usage.
Think of mAh as the size of a fuel tank – larger tanks allow longer runs between refills. For example, a 5000mAh battery can deliver 5000 milliamps for one hour or 1000 milliamps for five hours.
High-capacity lithium-ion batteries offer key benefits, such as:
- Longer runtime during activities like camping or using cordless tools.
- Reduced charging frequency, which extends battery life due to fewer recharge cycles.
- Improved performance in high-drain devices like electric tools and e-bikes, preventing early power loss.
Highest Capacity: 18650 vs. 21700 Battery
Currently, 18650 and 21700 are the most popular lithium-ion battery cells on the market.
18650: Maximum Proven Capacity
The 18650 battery is an excellent choice for rechargeable lithium-ion cells.
Top high-capacity options include the Panasonic NCR18650G, LG INR18650-M36, Sanyo NCR18650GA, LG MJ1, Molicel M35A, and Samsung 35E (3500mAh). These batteries offer a good balance of capacity, cost, and availability for various uses.
| Brand | Model | Capacitate | Tensiune nominală | Maximum Voltage | Maximum Discharge Current |
| Panasonic | NCR18650G | 3600mAh | 3.6V | 4.2V | 7.2A |
| LG | INR18650-M36 | 3600mAh | 3.6V | 4.2V | 5A |
| Sanyo | NCR18650GA | 3500mAh | 3.6V | 4.2V | 10A |
| LG | MJ1 | 3500mAh | 3.6V | 4.2V | 10A |
| Molicel | M35A | 3500mAh | 3.6V | 4.2V | 10A |
| Samsung | 35E | 3500mAh | 3.6V | 4.2V | 8A |
Este posibil să găsiți aproximativ 18650 de celule etichetate “4000mAh,” Dar iată adevărul:
- Celula nr. 18650 depășește 3650mAh în testele de descărcare controlate de 0,2C controlate (IEC 61960).
- Celulele etichetate “4000MAH” a avut capacități reale sub 3200mAh în 87% din eșantioane.
- Alertă de siguranță: Celulele contrafăcute cu modele reciclate sunt predispuse la scurgeri termice la descărcări peste 4A.
Ca a Producător de pachete personalizate Lucrând cu mărci de încredere, suntem precauți cu privire la celulele care pretind peste 3500mAh; Orice peste 4000mAh este probabil prea bun pentru a fi adevărat. Ne asigurăm inspecții minuțioase, astfel încât să primiți baterii autentice din surse de încredere!
21700: unde trăiește adevăratul mare capacitate
Switching from 18650 to 21700 batteries marks a significant advancement in the battery world, driven by the demand for more power and better performance.
The 21700 cells boast over 4000mAh, surpassing the power of the reliable old 18650s. If you’re curious about what distinguishes these batteries, explore “21700 vs 18650” for details on cost, performance, and application.
| Brand | Model | Capacitate | Tensiune nominală | Maximum Voltage | Maximum Discharge Current |
| Samsung | 50E | 5000MAH | 3.6V | 4.2V | 9.8A |
| Panasonic | NCR21700A | 5000MAH | 3.6V | 4.2V | 15A |
| LG | INR21700-M50LT | 5000MAH | 3.69V | 4.2V | 14.4A |
| Molicel | P50B | 5000MAH | 3.6V | 4.2V | 60A |
| EVE | 40PL | 4000MAH | 3.65V | 4.2V | 70A |
The Samsung 50E and Panasonic NCR21700A are with the highest capacity, each offering a substantial 5000mAh – renowned for their energy capacity and reliability. They’re excellent for high-power flashlights, e-bike packs, and portable power stations. Many are transitioning from 18650 to these more robust battery packs and Tesla was one of them.
How to Choose the Highest Capacity Lithium-Ion Battery
When aiming to make a lithium-ion battery with the highest capacity, you must first consider size constraints. It’s also important to consider the continuous discharge rating (CDR), which indicates how much current (measured in amps) the battery can safely provide without overheating or damaging itself.
Here are some tips to determine if the battery is suitable:
For maximum runtime:
- Samsung 50E (if discharge<10A)
- Panasonic NCR21700A (if discharge<15A)
For high-drain devices:
- Molicel P50B (60A CDR)
Dangerous Myths Exposed
- Myth: “4800mAh 18650 exists.”
Truth: Not possible with current Li-ion chemistry.
- Myth: Higher mAh = longer runtime regardless of CDR .
Truth: Samsung 50E (5000mAh) lasts shorter than Molicel P50B in 20A+ tools due to voltage sag.
- Myth: Capacity = performance.
Truth: Tesla 4680 stores 5% less energy than 21700 but charges 3X faster with a tabless design.
FAQs About High-Capacity Lithium Ion Battery
How many charge cycles can I expect from a high-capacity 18650 battery?
Charge cycles depend on battery quality, usage, and adâncimea de descărcare. High-quality 18650 batteries usually provide 300-500 full charge cycles before significant capacity loss, with some premium versions claiming up to 1000 cycles.
Is “higher capacity = better” always true?
A lithium battery cannot be classified solely by capacity, as each application has unique requirements. The best battery is the one that meets those specific needs.
Pot face upgrade în siguranță la baterii cu capacitate mai mare?
Numai în condiții stricte:
- Dispozitive cu celule care pot fi înlocuite de utilizator (de exemplu, lanterne, unele instrumente electrice)
- Celulele noi au un CDR egală/mai mare decât originalele
- Dimensiunile fizice se potrivesc cu 0,1mm
Nu încercați niciodată cu:
- Pachete de baterii încorporate (calibrarea BMS eșuează)
- Dispozitive care trag peste 10A (necesită inginerie la nivel de pachet)
- Echipament medical sau de transport
Bateriile de mare capacitate se încarcă mai lent?
Viteza de încărcare depinde de Ladă, nu capacitate.
