18650 Li-ion cell is a well-liked battery selection for each lengthy vary FPV drones and tools similar to FPV goggles and radios. Nonetheless, with so many choices in the marketplace, choosing the right 18650 cells could be overwhelming. I examined numerous 18650 batteries, evaluating their efficiency and true capability to seek out the best batteries that provide lengthy flight instances and dependable efficiency.
Why 18650 Li-ion Batteries?
Choosing the proper battery is essential for optimizing the efficiency of FPV tools. The 18650 Li-ion battery emerges as a best choice as a consequence of its stability of vast availability, longevity, and cost-effectiveness. It’s notably favored by long-range FPV pilots for its superior energy-to-weight ratio in comparison with conventional LiPo batteries. Though it might not ship the excessive present output of LiPo batteries, it’s satisfactory for drones designed for effectivity and endurance.
For a deeper dive into the professionals and cons of Li-ion batteries over LiPo, take a look at this put up: https://oscarliang.com/li-ion-battery-long-range/
To sum it up, right here’s why 18650 batteries are most well-liked for FPV drones and equipment:
- Capability and Effectivity: They provide substantial power storage in a compact type issue.
- Rechargeability: These batteries are able to tons of of cost cycles with out important degradation.
- Availability: They’re extensively obtainable and used throughout numerous digital units and instruments.
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The Contenders
To seek out the perfect, I examined quite a lot of 18650 batteries from respected manufacturers, contemplating completely different specs for a well-rounded overview.
* Worth in response to my native reseller on the time of publishing.
** Weight is measured on my own
Testing Methodology
To find out the perfect batteries, I targeted on two key efficiency indicators:
- Capability: Measured by discharging batteries at a gradual charge (2A) from 4.2V per cell right down to 2.9V to precisely gauge their power storage capabilities.
- Voltage Sag: Assessed by discharging at a quicker charge (12A) from 4.2V per cell to 2.9V to judge their efficiency underneath load all through the discharge cycle.
In case you might be curious what testing tools I used, it was the SkyRC BD350 discharger.
Outcomes and Suggestions
When evaluating the discharge charge, the Molicel P30B and P28A stood out for delivering constant energy, particularly underneath heavy load, making them splendid for high-demand lengthy vary FPV flying. The Sony VTC5A and VTC6 had been shut contenders, performing admirably as nicely.
When it comes to true capability, the Molicel M35A and Sanyo NCR18650GA led the pack, providing the best mAh at roughly 3260mAh. Right here’s an in depth breakdown of marketed versus measured capacities:
| Marketed Capability | Measured mAh (Cutoff 2.9V) |
| NewBeeDrone Nitro Nectar Gold 3000mAh | 2827mAh |
| Sony VTC5A 2500mAh | 2415mAh |
| Sony VTC6 3000mAh | 2939mAh |
| Molicel P30B 3000mAh | 2851mAh |
| Molicel P28A 2800mah | 2627mAh |
| Molicel M35A 3500mah | 3263mAh |
| Sanyo NCR18650GA 3500mah | 3265mAh |
| Radiomaster 3200mah | 3058mAh |
| Radiomaster 2500mah | 2583mAh |
Primarily based on our testing, listed here are our high suggestions for various FPV wants.
For lengthy vary FPV flights, the NewBeeDrone Nitro Nectar Gold emerges because the clear winner for its distinctive capability and discharge efficiency, minimizing voltage sag. Molicel P30B is a good various and extra extensively obtainable outdoors the US.
The VTC6 and P28A are additionally wonderful choices, with the VTC6 barely edging out in flight time and the P28A offering a bit extra punch.
Best choice:
- NBD Nitro Nectar Gold:
- Molicel P30B:
Nice options:
For low present functions like powering FPV goggles and radios, the Molicel M35A and Sanyo NCR18650GA are my go-to choices. The Radiomaster 3200mAh and VTC6 are additionally worthy concerns.
Prime decisions:
- Sanyo NCR18650GA:
- Molicel M35A:
Nice options:
Constructing Your Personal Pack
You possibly can construct your individual battery packs utilizing singular 18650 cells following this information: https://oscarliang.com/li-ion-battery-long-range/.
Whereas I’ve examined numerous pre-made 6S Li-ion packs from respected distributors, none matched the efficiency of Molicel cells (I suppose they don’t seem to be utilizing the perfect cells with a purpose to maximize revenue). Due to this fact assembling your individual Li-ion battery pack utilizing top-quality cells, ensures the very best efficiency, generally even cheaper.
Conclusion
Choosing the proper 18650 Li-ion battery requires weighing a number of efficiency elements. I hope our comparability and testing helped you resolve which 18650 cells to get. Completely happy flying!
Charging 18650 Batteries
Trendy LiPo chargers sometimes help Li-Ion battery sort; merely join them as you’ll a LiPo battery. For charger suggestions, take a look at: https://oscarliang.com/choose-lipo-battery-charger-power-supply/
Edit Historical past
- Feb 2018: Article creation.
- Mar 2024: Replace with the newest check outcomes with the newest 18650 cells.
- Jan 2026: Added end result from NewBeeDrone Nitro Nectar Gold