How to Safely Charge & Discharge Maxwell or Nesscap Ultra & Farad Super Capacitor Banks 

You make a good point. However you set the power supply to max 5 amps and the rated voltage of the Capacitor. The voltage will slowly increase as the capacitor is charged. When the set voltage is reached then the current will drop to zero. The bulb is good for discharging the Capacitor.

Dear sir, Good day This is preethesh kumar from India I have already purchased 165F, 48V x 2 pcs I have technical query regarding some conditions while charging and discharging. Question 1 1) sir, what is the max charging current of this module 165F,48V.i have 50 ampere 48volt dc power supply source if I charge it directly will it damage the supercapacitor. If not possible to charge directly with 50 ampere can I use high wattage resister in series. For 165F, 48V supercapacitor module can you suggest the resistance value and it's wattage for charging my concern I need fast charging. Question 2 2) sir, once 165F, 48Volt supercapacitor got charged fully with 48V, 50 ampere power supply source if capacitor got charged fully if I keep continue power supply on to the terminals of the capacitor after fully charging will it consume current after fully charging and or will it damage any heating life decreasing plz check and inform me. Question 3 3) what is the full output current of fully charged 165F,48V ultra capacitors. Please reply for the above questions Thank you Waiting for your reply

Yes, I am referring to power supplies that have current limiting controls.

Why not just use the appropriate size power resistor from the charger instead of a lamp. It would charge faster than just using a random incandescent lamp.

hello sir i have 6 2.7v maxwell super capacitors 3000f connected in series how many amperes and voltage of light bulb i should use ?

This is very helpful. It's good to know how to do this safely. On my end when charging the supercap below I think I just lucked out. I realized when I received the Supercap that it was about 1.5 volts or so and that my lithium battery chargers would fault based on undervoltage. I hooked up a voltage meter to the circuit and used a 12v power supply (1.75 amp) and turned the power switch off and on every second or so until it gradually built up to the necessary voltage to be recognized by the charger (it seems like this was around 9 or 10 volts) which could then take over. It appears that with your light bulb assembly I would have not needed to be the "manual" power limiter, but the bulb could have taken my place without any intervention needed on my part. I have a question that I'm facing with an application of a super capacitor and it seems like you are someone who could help me find the answer. I don't have an electronics background, but I'm generally really handy/capable at finding and implementing solutions. I'll put the question out there, in case you'd be willing to give me some pointers. I apologize if this is hijacking your thread. If I knew where to find the answer I'd go there. I'm still trying to find the answer. I'm using an LifeP04 battery in place of an SLA battery to power an automatic gate opener as the sole power source for the gate. I'm using an adequately sized solar panel to charge they system and the battery size of the LifeP04 battery is 55 AH. The SuperCap is 16v 500F. I'm not sure of the load of the gate opener, but it's not huge. From what I can tell, the BMS in the battery is activating an undervoltage protection for the battery occasionally, as occasionally the voltage drops into the 10v range and the gate control faults and stops the gate. It takes a reinitiation of the gate control to complete the gate cycle as the gate stops. I've purchased a SuperCap to run in parallel with the battery to help it get over the excess load during the peak draw and want to limit the amount of power that can be drawn from the battery before the supercap has given up the power first. I'd like to limit that drawdown of the battery to around 11 volts. My intention is to install a resistor on the battery side to accomplish this. I just don't know the size. I've seen misc. sizes from automotive application videos, but the one that identified the voltage during the drawdown was going to less than 11 volts. Would you be willing to offer any pointers? Also, now I'm curious... If I understand correctly - a potentiometer is a variable resistor. Are there (heavy duty/affordable/readily available) potentiometer's that would be safe for this current range that I could simply dial in to get into the voltage range that I'm trying to stay in? This would help if my guess of 11 volts isn't the right guess as I could just do a quick adjustment until the gate functions correctly. Even if I only used the POT to test/establish the ultimate size of the fixed resistor... and then installed a fixed resistor.

This is extremely helpful. I've watched dozens of video's with ppl directly connecting in their cars and never any mention of these important facts. In fact, I may have even damaged my car computer doing that. Understanding the burst factor of everything outputting at once (short circuiting) is really important..

how can we charge the ultra capacitor module fast? if we are connecting the ultracapacitors parallel to the battery in trucks or car will the capacitor charge fast enough to crank the engine during frequent starts and stops ?

Thank you for your video, Just to clarify... I am putting a 500F 16v supercapcitor before a 12V inverter (being run by a Lithium 12V battery.) What your saying is to connect the capacitor in parrarell with the system I already have, charge it first to full capacity as shown in your video with 50 watt globe and then once fully charged (light goes off) connect it? Once it is connected the battery the voltage between capacitor and battery voltage should eventually go to equilibrium ? ... please advise 🙏 thanks again..

So are you saying the manufacturer is incorrect and just letting you hook up the ultra capacitor to the battery. Would you have any input and why the ultracapacitor that I have which is a Maxwell 31 group semi truck starting module will not charge past 12 volts , it all of a sudden after two years old stopped charging past 12 volts

Where's the link for the bulb??