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Product FAQ

You can find answers to the frequently asked questions.

Q16.What cautions should be taken before using Hy-Cap?


When using Hy-Cap Electric Double-Layer Capacitor, please make sure of polarity(+and ‒marking) when using and do not use higher than rated voltage. Also please use within the recommended operating temperature range and store within the recommended storage temperature range. In case of connecting more than 2 units for modules, we recommend “unit voltage - 0.2V” per unit for the sake of safer voltage balancing (e.g. 2.5V in case of 2.7V unit). When soldering, be aware of proper conditions in order to avoid excessive heat or time on the products.

※ For more details, please contact us.

Q17.How can we access the latest catalogue and the date sheets?


You can download Hy-Cap catalogue from below link and contact us for further details on our inquiry page and If you want them by mail, please request them on our inquiry page.
 Hy-Cap Catalogue

Q18.How can I arrange samples?


You can request for samples on our inquiry page. We will send them once we have checked your application and requirements for the most suitable solution.

Q19.What does ‘balancing’ mean and what are the characteristics of a circuit?


Voltage variation amongst cells could occur in a module depending on each cell’s characteristics. The variable needs to be reduced to as low as possible for the best performance. The function of reducing it is called ‘balancing’. Vinatech’s special balancing technology is applied to all Vinatech’s modules in order to make their lifetime as long as possible and utilize their capacitance as much as possible.   

Q20.Can the terminal of Hy-Cap be customised?


Yes. For example, a Lead Terminal, Snap-in Terminal, Wire Terminal, and Wired connector are all available options.

Q21.How can I reach personnel in charge of my region?


You can request contact details via our inquiry page. The most local VINATech office will then contact you to discuss your application and requirements.

Q22.What is the specification of package for Hy-Cap?


Please contact us on our inquiry page or email us for the specification of the package.

Q23.Could Hy-Cap be offered in Ammo Taping Package?


The Hy-Cap cell in size of Φ8 or of Φ10 can be also offered in Ammo Taping Package.

Q24.Can Hy-Cap Supercapacitor make LED Watch?


Please see photos of a new design for a Solar watch, we have permission to use this in our websites and it's certainly a different application with VINATech Hy-Cap Supercapacitor.

"I understand that this not practical watches, I calling my product "party watch", not for daily usage but good eye catcher on special occasions.
Standby time is acceptable, in good condition more than 7 days. If anybody think that 5 minutes run-time is low? it is about 300seconds if you display time for 3 seconds you can check time 100 times or 350 times in low brightness.


Charging is very simple because VINATech supercaps are 3.0V, just I use 3.0V fixed voltage LDO MCP1700T3002ETT with 10R resistor to limit charging current + shottky diode for protection reverse current to LDO .... charging voltage drop to acceptable 2.95V


I am satisfied with results, I have something unique in world ... non practical but unique ;) ...."

Thanks to the Hackaday team you can learn more through Hackaday and YouTube.

Hy-cap Supercapacitor LED Watch made By Peter Misenko 
YouTube > 
Project Log > 
'Absolute best watch ever'

Q25.What is wetting? (Leakage VS Wetting)


Hy-Cap Anti Wetting Solution

The NEO series has been developed by VINATech’s R&D team.
What is ‘Wetting’?
‘Wetting’ is a phenomenon found when a Radial type EDLC (or Coin type) is used in extreme conditions, normally above the recommended +65c and linked with high humidity, normally found in Equatorial countries, rain forests etc. or in plain high temperatures near coast lines and some factory environments too.
The observation is a black sticky substance on the (-) pin, this in fact is a strong Alkali which corrodes the pin and rubber then erodes the PCB track causing equipment failure. Often the EDLC continues to work.

Why does it leak? We have studied this in depth and understand it is caused by an internal chemical reaction when additional H2O meets the Electrode and Electrolyte. It doesn’t effect the SNAP IN types
VINATech and some major customers have tested the NEO products at +65℃ & 90% RH and, after 12 months of accelerated test, have not seen any sign of wetting.
What is ‘Leakage’?
 ‘Leakage’ is a phenomenon that the electrolyte (Salt + Solvent) is emitted out through (+/-) lead hole or rim of Al can, then only salt which looks white remains dried. It is mainly caused by the abnormality of sealing.
Basically ‘Leakage’ phenomenon is different with ‘Wetting’,  because the root cause is totally different.

Does it affect all EDLCs?
So far we have evidence it affects all EDLCs but mainly 2.7V series. As yet we haven’t seen “wetting” from our 3V customers, but it could be possible.
It affects all Industry sectors from HVAC to PCs, UPS, Automotive , Tracking , Building controls and AMR(Smartmeter).

Does it effect our competitors?
Yes. We have tested all our competitors 2.7V products and at some stage, some earlier than others, their products do fail

How is NEO better than other possible Anti Wetting solutions?
VINATech have improved the rubber bung, tightened the sealing (also for standard VEC series) but have also changed the Internal construction of the Capacitor to prevent the chemical reaction.

How do our competitors overcome Wetting?
One manufacturer has improved the rubber bung (like our VEC type) and added some epoxy or urethan, this has delayed the phenomenon. They also recommend anti gravitational mounting.
Other manufacturers suggest increasing the number of capacitors in series or bluntly say it is a fact of life and the customer should plan for this.

Life time, can we use the same life time data?
Yes, the NEO follows the same characteristics

Soldering and usage?
Please use the same guidelines as for VEC series, manual soldering or wave soldering (NOT Reflow)  

Q26.Can 3V Hy-Cap Supercapacitor make Rocket ?


Please check this out the video of an electric rocket, made with VINATech's Hy-Cap supercapacitor, that is, Ultracapacitor, electric double layer capacitor(EDLC). Thanks to Mr. Tom Stanton, he agreed to post it on VINATech websites.
Before the project, he thought the supercapacitor was more like future technology related with fast charging electric vehicles(EV). However, after he made supercapacitor rocket by himself with VINATech 3V supercapacitor, he found out that it has more energy density than the regular capacitor, and you can find it in the video between 01:30~02:00. 12:10 can see how fast for charging supercapacitor and 12:30 Hy-Cap supercapacitor Rocket is soaring up in the air successfully.

Q27.How to make MEA, PEMFC-MEA and DMFC-MEA?


Fuel Cells are a growing source of green energy generation and VINATech is a leader in the development of this emerging technology. So how do we make our PEMFC’s (Polymer Electrolyte Membrane Fuel Cell) and MEAs (Membrane Electrode Assembly) and DMFC (Direct Methanol Fuel Cell Membrane Electrode Assembly) at VINATech.
Here is a brief overview of how we make Polymer Electrolyte Membrane Fuel Cell Membrane Electrode Assembly (PEMFC-MEA). Firstly it takes many years to select the right raw materials then testing incoming materials

In order to make PEMFC-MEA(Polymer Electrolyte Membrane Fuel Cell Membrane Electrode Assembly), Slurry Mixing: Pt/C or PtRu/C catalyst mix with binder, menstruum and water is the first step and Electrode Coating: Using the slurry make electrode for membrane and Lamination/Delamination process is followed, after then, Sub-gasket assembly process is of attaching a sub-gasket to the both side of the membrane, make 5 layers MEA. GDL (Gas Diffusion Layer) assembly is the last step that the GDL attach sub-gasket to the both side of the sub-gasket, making 7 layers MEA.

DMFC-MEA(Direct Methanol Fuel Cell Membrane Electrode Assembly) required less steps than the previous one. Slurry Mixing is the process that Pt/C or PtRu/C catalyst mix with binder, menstruum and water, and Electrode Coating is done by Using the slurry coat the GDL. Next is GDL assembly process that The GDL attach membrane to both side of membrane, make 5 layers MEA.

Q28.What is the measurement method of Supercapacitance ESR and Capacitance?


DC ESR(Rd) is calculated by voltage drop (ΔV) which is measured by the period of time from discharge start to 10 milliseconds later. The discharge current(A) for test and measurement, 40 x Capacitance(F) x Rated Voltage(VR) would be recommended. AC Equivalent Series Resistance (ESR) is measured by 4-probe impedance analyzer. Condition : Potentiostat mode, AC amplitude : 5mV, Frequency : 1㎑
Supercapacitor capacitance measurement is as followed.