The latest version of the manual is available for download at enova18650.com.
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The latest firmware V.58 for the Gyrfalcon S8000 and S4000 Pro is now officially available. We have also updated the TestController definition file to version V1.7.7. In addition, the latest user manuals in both German and English, as well as the firmware update guide for Linux and macOS via command line (requires firmware version V.38 or above), are now available for download.
All resources can be found at: enova18650.com.
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After six months of in-depth technical evaluation, Dr. Gough Lui has completed a comprehensive review of the Gyrfalcon S4000 Pro. We sincerely appreciate your meticulous and scientifically rigorous analysis of the S4000 Pro.
Capacity accuracy when tested against an emulated battery was within 0.3% (on an individual slot basis) and averaging 0.2% (across all slots) when the reference equipment (Rohde & Schwarz NGM202) has an intrinsic error of around 0.05%. This is much more accurate than ordinary chargers which often only claim to be 1-5% accurate. The ability to set and measure current and voltages at fine granularity was another key thing that impressed – the unit meters down to 1mV/1mA with “fitted” error of <4mV/2mA as compared to a Keithley 2450 SourceMeter SMU.
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That’s an impressive review! I hope Gough’s health has improved.
It is great to see Gough use the Rohde & Schwarz NGM202 and a Keithley 2450 SourceMeter SMU to check the accuracy of the Gyrfalcon S4000 Pro.
Thank you to Dr. Gough Lui for the time, equipment, and data invested in this review, and to the readers of goughlui.com for your continued support.
If you’re considering getting a Gyrfalcon S8000 or S4000 Pro, you can find a limited discount code at the end of the review—quantities are limited, so first come, first served.
Once again, our sincere respect to Dr. Gough Lui.
Offer valid until: August 31, 2025
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Gough used the Gyrfalcon S4000 Pro as a testing device to evaluate the X*** 2600mAh Ni-MH batteries.
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The Gyrfalcon S8000 and S4000 Pro have introduced a new Simple Mode, which can automatically detect and charge Li-ion Std, Li-ion 1.5V, and Ni-MH batteries, making everyday use much more convenient. The beta firmware has already been sent to selected users and reviewer for testing, and we are now awaiting their feedback. The official release is expected in early December and will include several other practical new features.
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Thanks for the great update! That is something many beginners will appreciate! Testing the new feature is on my TODO list for the next few days.
Thank you very much for taking the time to test it!
We’d also love to hear the BLF’s thoughts on Na-ion cells and Ni-Zn cells.
It is great to see that you continue to improve these chargers. I will be interested in trying the latest features.
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Firmware V.64 for the Gyrfalcon S8000 & S4000 Pro is now officially released!
We’re excited to introduce the Simple Mode:
Automatic battery type detection for:
- Li-ion (standard)
- Li-ion 1.5V
- Ni-MH
Automatic selection of the appropriate charging current
No settings required — just insert the battery and let the charger handle the rest.
Safer, smarter, and much more convenient for daily use.
In addition to Simple Mode, firmware V.64 also includes several other improvements and new practical features, further enhancing overall performance.
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Great to hear. So where can I buy one of these (S8000) with this latest firmware AND the latest hardware - the longer negative slider?
At least the firmware can be updated easily via USB. Not sure if they even have the old version with short terminals on stock anywhere, so you should ask the seller.
[Official Announcement] Unified Statement on Gyrfalcon S8000 / S4000 Pro Community Discussions
Dear Users and Community Members,
The S8000 and S4000 Pro are approaching their second anniversary. During this time, we have closely monitored feedback and discussions from BLF, Reddit, TLF, YouTube, and other communities. To help users better understand the current status and improvements of these products, we are providing the following unified statement.
1. Current Versions Are Significantly Different from Initial Releases
We understand that some widely cited in-depth reviews were conducted over a year ago.
Since then, we have continuously optimized the products, including firmware iterations and hardware upgrades.
Current versions of the S8000 / S4000 Pro:
- Offer a substantially different core experience compared to the initial releases
- Have received positive feedback from advanced users and long-term users
2. Response to Two Common Community Concerns
We value community feedback, particularly professional input from BLF. The two most frequently raised topics are addressed below.
2.1 “Complex Operation” — Introduction of Simple Mode
To reduce the learning curve, we have introduced Simple Mode.
Simple Mode, designed for everyday use:
- Requires no button presses and minimal learning
- Automatically detects batteries and selects the appropriate charging current upon insertion
Professional Mode is intended for advanced users:
- Emphasizes control and flexibility, requiring some learning and understanding
- Once familiar, users can actively and precisely manage and protect their batteries
The S series now accommodates both beginner-friendly use and advanced functionality.
2.2 “Initial Slider Not Smooth” — Hardware Upgrades Completed
For early units with slider smoothness issues, the hardware has been upgraded:
Since April 2025, slider and positive/negative contacts have been fully updated
All new S8000 units now feature the revised design
Latest S4000 Pro batches also include the updated negative contact
The updated design significantly improves smoothness and consistency, and no longer affects daily use.
3. Optional Upgrade Kit for Early Adopters
To thank early adopters, We have created an upgrade kit for early versions. This is available for 20 euros.
Contents of the upgrade kit:
- USB-C → DC Barrel 20V custom cable
- 2 × 3010 (20V) cooling fans
- 65W PD power adapter
- 4 × updated negative contacts
We provide detailed video tutorials for users to complete the upgrade themselves.
Upgrading will provide:
- Noticeably smoother slider operation
- Compatibility with mainstream PD adapters
- Hardware readiness for future higher-current firmware updates
For users with basic DIY skills, even older units with the original structure can achieve full improvement with this kit.
For upgrade kit inquiries, please contact us via email.
4. Official Information Channels
Future updates regarding:
- Firmware releases
- Hardware improvements
- New product announcements
- Technical documentation
will be published primarily on:
Official Facebook Page:
(https://www.facebook.com/enovabatterycharger/)
Key information will also be synchronized to the BLF community. We welcome ongoing engagement and feedback.
5. Call for Trusted Reviewers
We sincerely invite experienced and credible reviewers / content creators to assist with:
- Demonstrating Professional Mode in real-world use
- Testing and reviewing TC + S Series chargers
- Producing upgrade kit installation and usage videos
If you have recommendations or wish to participate, please contact us directly.
We also thank HKJ for providing the community with such an excellent TestController(TC).
Closing Remarks
We sincerely appreciate all users for their support, suggestions, and constructive criticism over the past two years.
It is these ongoing, rational discussions that drive product improvement.
We will continue to listen attentively to the community, ensuring the S series chargers become increasingly reliable and refined.
Thank you!
Enova Gyrfalcon Team
6 Thanks
Thanks for all of this. You have made lots of great improvements. I almost wish I had waited to buy, as I was one of the very early adopters. I appreciate you continued support for the chargers. I sent you an email asking about the upgrade kit.
Thank you very much for your trust and support! We greatly appreciate the backing of our early adopters—without your encouragement and feedback, the subsequent improvements would not have been possible. We always highly value the input from our early users.
We have received your message and will get back to you as soon as possible.
1 Thank
I appreciate the responsiveness to the community too.
Where can I buy one from?
You can find it here.
EU: Enova | akkuteile.de
US: Enova | liionwholesale.com
AU, NZ, Others: Enova | enovapura.com
Thankyou. One ordered.
Started testing the simple mode with FW 3.2.64 and some NiMH
TBH, not sure which users it adresses.
NiMH recognized correctly, used AAA and AA, resistance from 67-259mOhms, charger choosed always 450mA charging. I´m generally not a fan of automatic chargers but the ones I know using the resistance for choosing the charge current. Not sure how the S4000 decide to use the charging current?
I would say these chargers not made for ppl who use normally automatic chargers with (almost) no manual settings, so not sure how many ppl here would use the simple mode?
I would prefer things like many other chargers do:
- I insert a cell
- Charger recognize the correct chemistry (at least NiMH/LiIon)
- If not possible, chemistry flashes, user can change it and go to next setting
- Charging current flashes (pre-selection e.g. 500mA/1000mA)
- User can use up/down buttons to adjust current (maybe not so small steps, something like 250mA/step)
- Slection for use this setting on every slot
- Charging begins
I dunno how many ppl would use it, but for me it would make more sense for NOT daily use scenarios
For more common scenarios I would use my saved programs for charging AAA/AA/18650 etc.
Question: If I start the charger it uses my programs 1-4 for slot 1-4, which makes no sense in my case because in this case I have:
- Slot: Charging AAA at 500mA
- Slot: Discharging AAA at 350mA
- Slot: Charging AA at 1000mA
- Slot: Discharging AA at 800mA
Maybe it´s possible after power on the charger there´s a direct selection which let me choose my program and use this program for all slots?
Just some suggestions for me, if I´m the only one who thinks this way I don´t expect to spend much effort to make this functions.
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